ORCID Profile
0000-0002-6676-7779
Current Organisation
University of South Australia
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Research Topics
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Top 5 Research Topics
ANZSRC Field of Research (FoR)
Materials Engineering | Composite and Hybrid Materials | Nanotechnology not elsewhere classified | Materials Engineering not elsewhere classified | Polymers and Plastics | Structural engineering | Materials engineering | Cultural Studies | Nanotechnology | Reaction kinetics and dynamics | Postcolonial And Global Cultural Studies | Interdisciplinary Engineering not elsewhere classified | Aboriginal Cultural Studies | Polymers | Composite Materials | Functional materials | Nanoscale characterisation | Nanomaterials | Civil engineering | Functional Materials | Nanotechnology | Manufacturing Processes and Technologies (excl. Textiles) | Construction materials | Nanofabrication, Growth and Self Assembly
ANZSRC Socio-Economic Objective (SEO)
Manufacturing not elsewhere classified | Rubber and Synthetic Resins | Polymeric Materials (e.g. Paints) | Plastic Products (incl. Construction Materials) | Energy Storage, Distribution and Supply not elsewhere classified | Plastic products (incl. Construction materials) | Industrial | Expanding Knowledge in Technology | Hydrogen Production from Renewable Energy | Energy Storage (excl. Hydrogen) | Plastics in Primary Forms | Polymeric materials (e.g. paints) | Industrial Chemicals and Related Products not elsewhere classified |
Related Links
Publications
Effect of inorganic nanoparticles on mechanical property, fracture toughness and toughening mechanism of two epoxy systems
Publisher: Elsevier BV
Date: 07-2008
Free-standing PEDOT/polyaniline conductive polymer hydrogel for flexible solid-state supercapacitors
Publisher: Elsevier BV
Date: 11-2019
MicroRNA target prediction and validation
Publisher: Elsevier
Date: 2022
Electrically and thermally conductive elastomer by using MXene nanosheets with interface modification
Publisher: Elsevier BV
Date: 10-2020
Graphene platelets versus phosphorus compounds for elastomeric composites: Flame retardancy, mechanical performance and mechanisms
Publisher: IOP Publishing
Date: 08-07-2019
Abstract: Polymers are widely used but their flammability remains a serious issue causing fatalities and property damage. Herein we present an investigation into the effectiveness of graphene platelets (GnPs) to simultaneously improve the flame retardancy and mechanical properties of ethylene propylene diene monomer rubber (EPDM). EPDM was melt compounded respectively with GnPs and a commercial flame retardant (ammonium polyphosphate, APP) to produce two groups of composites. Although both fillers were well dispersed in EPDM, GnPs significantly improved the mechanical properties of EPDM whilst APP compromised some of the mechanical properties particularly at high fractions. This difference was attributed to the filler particle size and interfacial bonding. Through cone calorimetry testing, 21 wt% char yield was recorded for the EPDM/GnP composite at 12.0 vol%, in comparison with 8 wt% for the EPDM/APP composite. APP was able to lower the peak heat release rate (PHRR) and specific mass loss rate (MLR), but unfortunately it decreased the ignition time and fire performance index (FPI). By contrast, GnPs has been found to increase ignition time by 29% and FPI by 62%, while still achieved the same level of reductions in PHRR and specific MLR, demonstrating clear advantages over APP. During combustion the highly thermally stable GnPs bonded with the viscous, degraded EPDM macromolecules, forming a thick solid char layer which prevented the transport of heat and smoke, contributing to its superior flame retarding performance over APP.
Highly sensitive and flexible capacitive elastomeric sensors for compressive strain measurements
Publisher: Elsevier BV
Date: 03-2021
Mechanically robust, highly sensitive and superior cycling performance nanocomposite strain sensors using 3-nm thick graphene platelets
Publisher: Elsevier BV
Date: 06-2021
Stretchable and calibratable graphene sensors for accurate strain measurement
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0MA00032A
Abstract: A stretchable and calibratable graphene sensor for accurate strain measurement.
Pyrolysis of polymethylsilsesquioxane
Publisher: Wiley
Date: 22-05-2002
DOI: 10.1002/APP.10576
Development of flexible supercapacitors using an inexpensive graphene/PEDOT/MnO 2 sponge composite
Publisher: Elsevier BV
Date: 07-2017
Enhancing thermoelectric performance of PEDOT: PSS: A review of treatment and nanocomposite strategies
Publisher: Elsevier BV
Date: 2024
A high-performance Bi 2 WO 6–graphene photocatalyst for visible light-induced H 2 and O 2 generation
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3NR05249D
Abstract: We developed a highly efficient photocatalyst for both H2 and O2 generation under visible-light irradiation by attaching Bi2WO6 (BWO) nanocrystals on graphene nanosheets to produce a graphene-Bi2WO6 composite (Gr-BWO-T). The composite was prepared by a sonochemical method where graphene oxide (GO) served as the support on which BWO formed in situ. Bi2WO6 nanoparticles with the size of 30-40 nm were homogeneously dispersed on the surface of graphene sheets, due to their bonding with graphene. When used as a photocatalyst under visible-light irradiation, O2 production rate reached a value up to 20.60 μmol h(-1), 4.18 times higher than that of bare BWO, resulting from the strong covalent bonding between graphene and BWO nanoparticles. The chemical bonding facilitated the electron collection and transportation and inhibited the recombination of photo-generated charge carriers, even in this system with a large amount of graphene inside (40 wt%). More interestingly, H2-production by Gr-BWO-T was also observed to be as high as 159.20 μmol h(-1). This could be ascribed to the existence of the graphene that led to decrease in conduction band potential and resulted in a more negative reduction potential than H(+)/H2. This facile sonochemical approach provides a new strategy for engineering ternary compound nanoparticles on graphene sheets, with great potential application in energy conversion.
Controlled fabrication of Si nanoparticles on graphene sheets for Li-ion batteries
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3RA22989K
Synthesis and characterization of novel soybean-oil-based elastomers with favorable processability and tunable properties
Publisher: American Chemical Society (ACS)
Date: 05-11-2012
DOI: 10.1021/MA301938A
Hydrogen Bonding-Reinforced Hydrogel Electrolyte for Flexible, Robust, and All-in-One Supercapacitor with Excellent Low-Temperature Tolerance
Publisher: American Chemical Society (ACS)
Date: 22-07-2020
A facile approach to the scalable preparation of thermoplastic/carbon nanotube composites
Publisher: IOP Publishing
Date: 24-02-2020
Abstract: Disentangling and dispersing multiwalled carbon nanotubes (MWCNTs) in thermoplastics by the existing melt compounding facilities where neither solvent nor liquid chemicals are allowed remains a great challenge. This challenge is addressed herein by combining ball milling with melt compounding. Specifically, ball milling is applied to disentangle MWCNTs and to eventually liberate each tube from agglomeration, and then the tubes are melt compounded with SSFs (PA6). A uniformly distributed MWCNT network is observed obvious load transfer from the matrix to the tubes is evidenced by the presence of many firmly embedded tubes on the fracture surface. The electrical conductivity percolation threshold of PA6/MWCNT composites is found to be 2.5-3.0 wt%, in comparison with 5.0-8.0 wt% for PA6/stainless steel fiber composites. The PA6/MWCNT composite at 10.0 wt% shows a 76% increase in flexural modulus and 58% in flexural strength.
Molecular Dynamics Simulation on In-Plane Thermal Conductivity of Graphene/Hexagonal Boron Nitride van der Waals Heterostructures
Publisher: American Chemical Society (ACS)
Date: 29-09-2022
Abstract: Graphene, hexagonal boron nitride (h-BN), and their heterostructures are promising thermal interface materials due to the outstanding thermal properties of graphene and h-BN. For the heterostructures, extensive work has mainly focused on the thermal transport of two-dimensional (2D) graphene/h-BN (GBN) in-plane heterostructures in which graphene and h-BN are bonded at the interface. In this study, we investigate the thermal conductivity of three-dimensional (3D) GBN van der Waals (vdW) heterostructures by means of nonequilibrium molecular dynamics (NEMD) simulations. Unlike the 2D GBN in-plane heterostructure, the 3D GBN vdW heterostructure consists of three layers where graphene is sandwiched by two h-BN sheets via vdW forces. Various techniques, including hydrogen-functionalization, vacancy defects, tensile strain, interlayer coupling strength, layer numbers of h-BN, size effect, and temperature, are extensively explored to find an effective route for the modulation of the thermal conductivity. It is found that the thermal conductivity of the triple-layer GBN vdW heterostructure is very sensitive to these extrinsic factors. Of these, hydrogen-functionalization is the most effective method. A low hydrogen coverage of 1% in the sandwiched graphene can lead to 55% reduction in the thermal conductivity of the vdW heterostructure. Vacancy defects on graphene exert a more significant effect on the thermal conductivity reduction for the vdW heterostructure than B or N vacancies in the outer h-BN layers. This work reveals the physical mechanism for manipulating the thermal transport along the GBN vdW heterostructures via structural modification and provides a useful guideline for designing novel thermal management devices based on the GBN vdW heterostructures.
Relations between carbon nanotubes' length and their composites' mechanical and functional performance
Publisher: Elsevier BV
Date: 04-2013
Stretchable, mechanically resilient, and high electromagnetic shielding polymer/MXene nanocomposites
Publisher: Wiley
Date: 28-01-2021
DOI: 10.1002/APP.50509
Molecular mobility and mechanical properties of novel clay/waterborne polyurethane nanocomposites
Publisher: American Scientific Publishers
Date: 02-2013
Cr-doped La-Ni-O catalysts derived from perovskite precursors for CH4-CO2 reforming under microwave irradiation
Publisher: Wiley
Date: 29-06-2016
Superior removal of Hg (II) ions from wastewater using hierarchically porous, functionalized carbon
Publisher: Elsevier BV
Date: 06-2019
DOI: 10.1016/J.JHAZMAT.2019.02.099
Abstract: The removal of heavy metal ions from industrial wastewater by adsorption has been central to the environment for decades, where common adsorbent materials are often limited by poor efficiency, complex fabrication and long processing time. Porous carbon derived from biospecies holds promise to address the limitations. In this study we converted bagasse into a carbon composite having hierarchically porous structure the composite's dispersion phases - iron oxide and manganese oxide - were synthesized by a simple one-step liquid-phase reaction method. Featuring large specific surface area of 350.8 m
Maximized crystal water content and charge-shielding effect in layered vanadate render superior aqueous zinc-ion battery
Publisher: Elsevier BV
Date: 09-2021
Nanosilica-toughened polymer adhesives
Publisher: Elsevier BV
Date: 09-2014
3D printing interface-modified PDMS/MXene nanocomposites for stretchable conductors
Publisher: Elsevier BV
Date: 08-2022
Design and Preparation of a Novel Cross-Linkable, High Molecular Weight, and Bio-Based Elastomer by Emulsion Polymerization
Publisher: American Chemical Society (ACS)
Date: 21-08-2012
DOI: 10.1021/MA301183K
Cross-plane thermal transport in multiplayer graphene/h-BN van der Waals heterostructures: The role of interface morphology
Publisher: Elsevier BV
Date: 12-2023
Epoxy/graphene film for lifecycle self-sensing and multifunctional applications
Publisher: Elsevier BV
Date: 09-2020
Free-standing, flexible, electrically conductive epoxy/graphene composite films
Publisher: Elsevier BV
Date: 2017
Tailoring the Morphology of g-C3N4 by Self-Assembly towards High Photocatalytic Performance
Publisher: Wiley
Date: 29-09-2014
A bioinspired poly(N-isopropylacrylamide)/silver nanocomposite as a photonic crystal with both optical and thermal responses
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7NR05087A
Abstract: Photonic crystals with both optical and thermal responses based on a natural butterfly wing template.
Preparation of antimonene nanosheets and their thermoelectric nanocomposites
Publisher: Elsevier BV
Date: 12-2021
Interface-tuned epoxy/clay nanocomposites
Publisher: Elsevier BV
Date: 2011
Chemically Bonded Sn Nanoparticles Using the Crosslinked Epoxy Binder for High Energy‐Density Li Ion Battery
Publisher: Wiley
Date: 02-11-2016
Durable cement/cellulose nanofiber composites prepared by a facile approach
Publisher: Elsevier BV
Date: 2022
Covalently bonded interfaces for polymer/graphene composites
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3TA01277H
Molecular‐Level Hybridization of Nafion with Quantum Dots for Highly Enhanced Proton Conduction
Publisher: Wiley
Date: 13-03-2018
Abstract: Nanophase-separated membranes hold promise for fast molecule or ion transfer. However, development and practical application are significantly hindered by both the difficulty of chemical modification and nanophase instability. This can be addressed by organic-inorganic hybridization of functional fillers with a precise distribution in specific nanophase. Here, a molecular-level hybridization for nanophase-separated Nafion using 2-5 nm quantum dots (QDs) as a new smart filler is demonstrated. Two kinds of QDs are prepared and used: hydrophilic polymer-like QDs (PQDs) and hydrophobic graphene oxide QDs (GQDs). Because of selective interactions, QDs offer advantages of matched structural size and automatic recognition with the nanophase. A distinctive synthesis of subordinate-assembly, in which QDs are driven by the self-assembly of Nafion affinity chains, is reported. This results in a precise distribution of QDs in the ionic, or backbone, nanophases of Nafion. The resulting PQDs in the ionic nanophase significantly increase membrane proton conduction and device output-power without loss of mechanical stability. This is difficult to realize with conventional fillers. The GQDs in the backbone nanophase reduce the crystallinity and significantly augment membrane water uptake and swelling capacities.
Structure-property relations of 55 nm particle-toughened epoxy
Publisher: Elsevier BV
Date: 10-2010
Multiple melting and crystallization of nylon‐66/montmorillonite nanocomposites
Publisher: Wiley
Date: 13-10-2003
DOI: 10.1002/POLB.10608
Improving the through-thickness thermal and electrical conductivity of carbon fibre/epoxy laminates by exploiting synergy between graphene and silver nano-inclusions
Publisher: Elsevier BV
Date: 02-2015
From carbon nanotubes and silicate layers to graphene platelets for polymer nanocomposites
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2NR30837A
Abstract: In spite of extensive studies conducted on carbon nanotubes and silicate layers for their polymer-based nanocomposites, the rise of graphene now provides a more promising candidate due to its exceptionally high mechanical performance and electrical and thermal conductivities. The present study developed a facile approach to fabricate epoxy-graphene nanocomposites by thermally expanding a commercial product followed by ultrasonication and solution-compounding with epoxy, and investigated their morphologies, mechanical properties, electrical conductivity and thermal mechanical behaviour. Graphene platelets (GnPs) of 3.57 ± 0.50 nm in thickness were created after the expanded product was dispersed in tetrahydrofuran using 60 min ultrasonication. Since epoxy resins cured by various hardeners are widely used in industries, we chose two common hardeners: polyoxypropylene (J230) and 4,4'-diaminodiphenylsulfone (DDS). DDS-cured nanocomposites showed a better dispersion and exfoliation of GnPs, a higher improvement (573%) in fracture energy release rate and a lower percolation threshold (0.612 vol%) for electrical conductivity, because DDS contains benzene groups which create π-π interactions with GnPs promoting a higher degree of dispersion and exfoliation of GnPs during curing. This research pointed out a potential trend where GnPs would replace carbon nanotubes and silicate layers for many applications of polymer nanocomposites.
Effect of surface modification of lead zirconate titanate particles on the properties of piezoelectric composite sensors
Publisher: SPIE
Date: 09-08-2013
DOI: 10.1117/12.2025131
Assembly of MnO/CNC/rGO fibers from colloidal liquid crystal for flexible supercapacitors via a continuous one-process method
Publisher: IOP Publishing
Date: 02-09-2019
Abstract: Flexible supercapacitors based on fiber shaped electrodes exhibit great potential for practical applications in smart fabrics owing to their light weight, good flexibility, and excellent weaveability. Herein, manganosite/carbonized cellulose nanocrystal/reduced graphene oxide (MnO/CNC/rGO) ternary composite fibers were fabricated from liquid crystal spinning dopes through a continuous one-process method. The assembly of CNC and manganese oxide nanoparticles in GO aqueous dispersion not only prevents GO nanosheets from restacking, but also ensures a uniform intercalation of nanoparticles. After a chemical and thermal reduction, the carbonized CNC contributes for additional electrical double layer capacitance while the MnO for faradaic pseudocapacitance. A fiber supercapacitor was assembled by arranging two MnO/CNC/rGO ternary composite fibers coated with PVA/H
A facile approach to fabricate elastomer/graphene platelets nanocomposites
Publisher: SPIE
Date: 09-08-2013
DOI: 10.1117/12.2023953
Near-Infrared Trigged Stimulus-Responsive Photonic Crystals with Hierarchical Structures
Publisher: American Chemical Society (ACS)
Date: 19-09-2017
Abstract: Stimuli-responsive photonic crystals (PCs) trigged by light would provide a novel intuitive and quantitative method for noninvasive detection. Inspired by the flame-detecting aptitude of fire beetles and the hierarchical photonic structures of butterfly wings, we herein developed near-infrared stimuli-responsive PCs through coupling photothermal Fe
Graphene-based multifunctional surface and structure gradients engineered by atmospheric plasma
Publisher: Elsevier BV
Date: 06-2022
A New Strategy to Exfoliate Silicone Rubber/Clay Nanocomposites
Publisher: Wiley
Date: 02-05-2005
From nano to giant? Designing carbon nanotubes for rubber reinforcement and their applications for high performance tires
Publisher: Elsevier BV
Date: 12-2016
Epoxy nanocomposites containing magnetite-carbon nanofibers aligned using a weak magnetic field
Publisher: Elsevier BV
Date: 06-2015
Micromechanics of damage localisation and shear failure of a porous rock: sound and vision
Publisher: Copernicus GmbH
Date: 15-05-2023
DOI: 10.5194/EGUSPHERE-EGU23-7933
Abstract: Catastrophic failure in brittle, porous materials initiates when structural damage, in the form of smaller-scale fractures, localises along an emergent failure plane or 'fault' in a transition from stable crack growth to dynamic rupture. Due to the extremely rapid nature of this critical transition, the precise micro-mechanisms involved are poorly understood and difficult to capture. However, these mechanisms are crucial drivers for devastating phenomena such as earthquakes, including induced seismicity, landslides and volcanic eruptions, as well as large-scale infrastructure collapse. Here we observe these micro-mechanisms directly by controlling the rate of micro-fracturing events to slow down the transition in a unique triaxial deformation experiment that combines acoustic monitoring with contemporaneous in-situ x-ray imaging of the microstructure. The results [1] provide the first integrated picture of how damage and associated micro-seismic events emerge and evolve together during localisation and failure and allow us to ground truth some previous inferences from mechanical and seismic monitoring alone. They also highlight where such inferences miss important kinematically-governed grain-scale mechanisms prior to and during shear failure.The evolving damage imaged in the 3D x-ray volumes and local strain fields undergoes a breakdown sequence involving several stages: (i) self-organised exploration of candidate shear zones close to peak stress, (ii) spontaneous tensile failure of in idual grains due to point loading and pore-emanating fractures within an emergent and localised shear zone, validating many inferences from acoustic emissions monitoring, (iii) formation of a proto-cataclasite due to grain rotation and fragmentation, highlighting both the control of grain size on failure and the relative importance of aseismic mechanisms such as crack rotation in accommodating bulk shear deformation. Dilation and shear strain remain strongly correlated both spatially and temporally throughout s le weakening, confirming the existence of a cohesive zone, but with crack damage distributed throughout the shear zone rather than concentrated solely in a breakdown zone at the propagating front of a pre-existing discontinuity.Contrary to common assumption, we find seismic litude is not correlated with local imaged strain large local strain often occurs with small acoustic emissions, and vice versa. The seismic strain partition coefficient is very low overall and locally highly variable. Local strain is therefore predominantly aseismic, explained in part by grain/crack rotation along the emergent shear zone. The shear fracture energy calculated from local dilation and shear strain on the fault is half of that inferred from the bulk deformation, with a smaller critical slip distance, indicating that less energy is required for local breakdown in the shear zone compared with models of uniform slip.This improvement in process-based understanding holds out the prospect of reducing systematic errors in forecasting system-sized catastrophic failure in a variety of applications.[1] Cartwright-Taylor et al. 2022, Nature Communications 13, 6169, 0.1038/s41467-022-33855-z
A new approach to nanoporous graphene sheets via rapid microwave-induced plasma for energy applications
Publisher: IOP Publishing
Date: 20-11-2014
DOI: 10.1088/0957-4484/25/49/495604
Abstract: We developed a novel approach to the fabrication of three-dimensional, nanoporous graphene sheets featuring a high specific surface area of 734.9 m(2) g(-1) and an ultrahigh pore volume of 4.1 cm(3) g(-1) through a rapid microwave-induced plasma treatment. The sheets were used as electrodes for supercapacitors and for the oxygen reduction reaction (ORR) for fuel cells. Argon-plasma grown sheets exhibited a 44% improvement of supercapacitive performance (203 F g(-1)) over the plasma grown sheets (141 F g(-1)). N-doped sheets with Co3O4 showed an outstanding ORR activity evidenced from the much smaller Tafel slope (42 mV/decade) than that of Pt/C (82 mV/decade), which is caused by the high electrical conductivity of the graphene sheets, the planar N species content and the nanoporous morphology.
Identifying models of care to improve outcomes for older people with urgent care needs: a mixed methods approach to develop a system dynamics model
Publisher: National Institute for Health and Care Research
Date: 09-2023
DOI: 10.3310/NLCT5104
Graphene and Hexagonal Boron Nitride in Molybdenum Disulfide/Epoxy Composites for Significant X-ray Shielding Enhancement
Publisher: American Chemical Society (ACS)
Date: 19-08-2022
Noncovalent Modification of Boron Nitrite Nanosheets for Thermally Conductive, Mechanically Resilient Epoxy Nanocomposites
Publisher: American Chemical Society (ACS)
Date: 10-11-2020
A green and solvent-free method for simultaneously producing graphene nanoplatelets, nanoscrolls, and nanodots and functionalizing their surface for epoxy nanocomposites
Publisher: Elsevier BV
Date: 2023
Ultra-stable zinc-ion batteries by suppressing vanadium dissolution via multiple ion-bonded vanadate cathodes
Publisher: AIP Publishing
Date: 03-02-2022
DOI: 10.1063/5.0061714
Abstract: Layered vanadate cathodes hold promise for aqueous zinc-ion batteries (AZIBs) owing to their multiple redox reactions as well as large interlayer space for Zn2+ storage. However, they are limited by vanadium dissolution during cycling, in association with severe capacity fade and unsatisfactory cyclic life. To address this challenge, we herein report a pre-inserted dual-cation vanadate (NaxZnyV3O8·nH2O) cathode, which combines the Zn2+-reinforced cathode structure with the Na+-enlarged lattice distance for fast and stable Zn2+ migration. Multiple ex situ analysis found that electrochemically active Zn3(OH)2V2O7·2H2O was generated after discharging, and this corresponds to the efficient suppression of vanadium dissolution by strong ionic bonding. As a result, a certain NaxZnyV3O8·nH2O cathode having a Na+ to Zn2+ ratio of 2:1 retains 99.6% of capacity after 418 cycles at 0.1 A g−1, 90.5% after 6000 cycles at 1.0 A g−1, and 96.7% after 9499 cycles at 10.0 A g−1. Our method paves a way for researchers to develop robust cathode materials for ultra-stable AZIBs.
Epoxy/graphene nanocomposites prepared by in-situ microwaving
Publisher: Elsevier BV
Date: 06-2021
Modification of starch for high performance elastomer
Publisher: Elsevier BV
Date: 05-2006
Superior piezoelectric composite films: taking advantage of carbon nanomaterials
Publisher: IOP Publishing
Date: 07-01-2014
DOI: 10.1088/0957-4484/25/4/045501
Abstract: Piezoelectric composites comprising an active phase of ferroelectric ceramic and a polymer matrix have recently found numerous sensory applications. However, it remains a major challenge to further improve their electromechanical response for advanced applications such as precision control and monitoring systems. We here investigated the incorporation of graphene platelets (GnPs) and multi-walled carbon nanotubes (MWNTs), each with various weight fractions, into PZT (lead zirconate titanate)/epoxy composites to produce three-phase nanocomposites. The nanocomposite films show markedly improved piezoelectric coefficients and electromechanical responses (50%) besides an enhancement of ~200% in stiffness. The carbon nanomaterials strengthened the impact of electric field on the PZT particles by appropriately raising the electrical conductivity of the epoxy. GnPs have been proved to be far more promising in improving the poling behavior and dynamic response than MWNTs. The superior dynamic sensitivity of GnP-reinforced composite may be caused by the GnPs' high load transfer efficiency arising from their two-dimensional geometry and good compatibility with the matrix. The reduced acoustic impedance mismatch resulting from the improved thermal conductance may also contribute to the higher sensitivity of GnP-reinforced composite. This research pointed out the potential of employing GnPs to develop highly sensitive piezoelectric composites for sensing applications.
Accurate self‐damage detection by electrically conductive epoxy/graphene nanocomposite film
Publisher: Wiley
Date: 12-01-2021
DOI: 10.1002/APP.50452
Abstract: Detecting and locating accurately structure damages at an early stage is essential to minimization of catastrophic disasters, prevention of fatalities and provision of cost‐effective maintenance. We herein report a facile approach to detect structure damages and to accurately identify their locations by using an electrically conductive epoxy/graphene nanocomposite film. A percolation threshold of electrical conductivity was observed at 0.58 vol% of graphene platelets (GnPs, ~3 nm in thickness and ~15 μm in length) electrical conductivity of 3.3 S/cm was obtained at 9.00 vol% of GnPs. The epoxy/GnP composite film containing 9.00 vol% of GnPs was employed as an array of electrically conductive paths in horizontal and vertical directions to detect and locate structure's damages. Thermal stability and temperature coefficient of the composite film were studied. Relative resistance change due to temperature effect was fitted into an exponential function, which showed strong correlation with the temperature change. This implies that an algorithm can be developed to compensate drift errors in resistance measurement due to temperature variation. With the help of Internet of Things, our self‐sensing epoxy/graphene nanocomposite films have great potential for smart aerospace structural health monitoring.
PEDOT-based composites as electrode materials for supercapacitors
Publisher: IOP Publishing
Date: 14-12-2015
DOI: 10.1088/0957-4484/27/4/042001
Abstract: Poly (3, 4-ethylenedioxythiophene) (denoted PEDOT) already has a brief history of being used as an active material in supercapacitors. It has many advantages such as low-cost, flexibility, and good electrical conductivity and pseudocapacitance. However, the major drawback is low stability, which means an obvious capacitance drop after a certain number of charge-discharge cycles. Another disadvantage is its limited capacitance and this becomes an issue for industrial applications. To solve these problems, there are several approaches including the addition of conducting nanofillers to increase conductivity, and mixing or depositing metal oxide to enhance capacitance. Furthermore, expanding the surface area of PEDOT is one of the main methods to improve its performance in energy storage applications through special processes for ex le using a three-dimensional substrate or preparing PEDOT aerogel through freeze drying. This paper reviews recent techniques and outcomes of PEDOT based composites for supercapacitors, as well as detailed calculations about capacitances. Finally, this paper outlines the new direction and recent challenges of PEDOT based composites for supercapacitor applications.
Development of SENB toughness measurement for thermoset resins
Publisher: Elsevier BV
Date: 06-2007
Hierarchical architecture for flexible energy storage
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7NR00867H
Abstract: The introduction of hierarchy and chirality into structure is of great interest, and can result in new optical and electronic properties due to the synergistic effect of helical and anisotropic structures. Herein, we demonstrate a simple and straightforward route toward the fabrication of hierarchical chiral materials based on the assembly of two-dimensional graphene oxide nanosheets (GO) and one-dimensional cellulose nanocrystals (CNCs). The unique layered structure of CNC/GO could be preserved in the solid state, allowing electrode active SnO
Role of interface of epoxy/clay nanocomposites and its effect on structure-property relationship
Publisher: Trans Tech Publications, Ltd.
Date: 02-2012
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.476-478.859
Abstract: It is well known that the interface between the particle and matrix of the composite was significantly important as it could control the load transfer between the matrix and filler of composite. Despite of, in the polymer nanocomposites, the role of interface is still fragmented and less examined. In this paper, two different designs of interface modification were developed molecular entanglement and chemical reaction using three variants surfactants such as ethanolamine, Jeffamine M2070 and Jeffamine XTJ502, with further investigation of structure-property relationship of epoxy/clay nanocomposites. The nanocomposites were prepared via solution mixing by reinforced 1.0–4.0 wt% of treated-clay. The interface properties were then characterized by XRD, FTIR, tensile test and fracture toughness. Results showed that for the epoxy/clay synthesized by reactive surfactant demonstrated higher stiffness and enhanced fracture toughness.
Graphene for flame-retarding elastomeric composite foams having strong interface
Publisher: Elsevier BV
Date: 10-2017
Nanosheets Co<inf>3</inf>O<inf>4</inf> Interleaved with Graphene for Highly Efficient Oxygen Reduction
Publisher: American Chemical Society (ACS)
Date: 15-09-2015
Abstract: Efficient yet inexpensive electrocatalysts for oxygen reduction reaction (ORR) are an essential component of renewable energy devices, such as fuel cells and metal-air batteries. We herein interleaved novel Co3O4 nanosheets with graphene to develop a first ever sheet-on-sheet heterostructured electrocatalyst for ORR, whose electrocatalytic activity outperformed the state-of-the-art commercial Pt/C with exceptional durability in alkaline solution. The composite demonstrates the highest activity of all the nonprecious metal electrocatalysts, such as those derived from Co3O4 nanoparticle/nitrogen-doped graphene hybrids and carbon nanotube/nanoparticle composites. Density functional theory (DFT) calculations indicated that the outstanding performance originated from the significant charge transfer from graphene to Co3O4 nanosheets promoting the electron transport through the whole structure. Theoretical calculations revealed that the enhanced stability can be ascribed to the strong interaction generated between both types of sheets.
High-Performance Microsupercapacitors Based on Bioinspired Graphene Microfibers
Publisher: American Chemical Society (ACS)
Date: 07-03-2018
Abstract: The miniaturization of portable electronic devices has fueled the development of microsupercapacitors that hold great potential to complement or even replace microbatteries and electrolytic capacitors. In spite of recent developments taking advantage of printing and lithography, it remains a great challenge to attain a high energy density without sacrificing the power density. Herein, a new protocol mimicking the spider's spinning process is developed to create highly oriented microfibers from graphene-based composites via a purpose-designed microfluidic chip. The orientation provides the microfibers with an electrical conductivity of ∼3 × 10
Bismuthene nanosheets prepared by an environmentally friendly method and their thermoelectric epoxy nanocomposites
Publisher: Elsevier BV
Date: 07-2023
Multifunctional, durable and highly conductive graphene/sponge nanocomposites
Publisher: IOP Publishing
Date: 02-09-2020
How affordable housing becomes more sustainable? A stakeholder study
Publisher: Elsevier BV
Date: 09-2017
Highly Sensitive, Wearable, Durable Strain Sensors and Stretchable Conductors Using Graphene/Silicon Rubber Composites
Publisher: Wiley
Date: 14-09-2016
Recent progress and performance evaluation for polyaniline/graphene nanocomposites as supercapacitor electrodes
Publisher: IOP Publishing
Date: 30-09-2016
DOI: 10.1088/0957-4484/27/44/442001
Abstract: Polyaniline (PANi)/graphene nanocomposites have attracted tremendous interest because of their great potential in electrochemical energy storage applications, especially supercapacitors. We herein focus on the composite synthesis, device fabrication and particularly various techniques for the improvement of electrochemical performance. It is imperative to take close control of the interface in these nanostructured composites, which thus would lead to the desired synergistic effects and cyclic stability with the efficient diffusion of electrolyte ions and electrons. Challenges and perspectives are discussed for the development of highly efficient PANi/graphene electrodes for supercapacitors.
Removing hazardous additives from elastomer manufacturing
Publisher: Elsevier BV
Date: 2023
Free-standing composite hydrogel films for superior volumetric capacitance
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5TA03113C
Abstract: Flexible, free-standing, high-performance supercapacitor electrodes were created by the development of a conducting composite hydrogel where graphene oxide sheets were in situ reduced by polyaniline.
Graphene Platelets and Their Polymer Composites: Fabrication, Structure, Properties, and Applications
Publisher: Wiley
Date: 24-03-2018
Tribological properties of epoxy/rubber nanocomposites
Publisher: Elsevier BV
Date: 12-2008
A novel approach to electrically and thermally conductive elastomers using graphene
Publisher: Elsevier BV
Date: 06-2013
Influences of doping Cr/Fe/Ta on the performance of Ni/CeO2 catalyst under microwave irradiation in dry reforming of CH4
Publisher: Elsevier BV
Date: 2016
Electrically conductive, mechanically robust, pH-sensitive graphene/polymer composite hydrogels
Publisher: Elsevier BV
Date: 04-2016
Compressible, electrically conductive, fibre-like, three-dimensional PEDOT-based composite aerogels towards energy storage applications
Publisher: Elsevier BV
Date: 04-2016
Bioinspired Thermoresponsive Photonic Polymers with Hierarchical Structures and Their Unique Properties
Publisher: Wiley
Date: 14-07-2015
Abstract: Thermoresponsive photonic materials having hierarchical structures are created by combining a template of Morpho butterfly wings with poly(N-isopropylacrylamide) (PNIPAM) through a chemical bonding and polymerization route. These materials show temperature-induced color tunability. Through reacting with both NIPAM monomers and the amino groups of chitosan in wing scales, glutaraldehyde workes as a bridge by creating chemical bonding between the biotemplate and the PNIPAM. The corresponding reflection peaks red-shift with increase in temperature-an opposite phenomenon to previous studies, demonstrating a thermoresponsive photonic property. This unique phenomenon is caused by the refractive index change due to the volume change of PNIPAM during the temperature rising. This work sets up an efficient strategy for the fabrication of stimuli-responsive photonic materials with hierarchical structures toward extensive applications in science and technology.
Engineering of nanotips in ZnO submicrorods and patterned arrays
Publisher: American Chemical Society (ACS)
Date: 15-12-2009
DOI: 10.1021/CG800362Z
Development of a novel toughener for epoxy resins
Publisher: Wiley
Date: 03-06-2009
DOI: 10.1002/PI.2604
Development of flame-retarding elastomeric composites with high mechanical performance
Publisher: Elsevier BV
Date: 06-2018
Cost-Effective Three-Dimensional Graphene/Ag Aerogel Composite for High-Performance Sensing
Publisher: Elsevier BV
Date: 07-2016
Flexible, mechanically robust, multifunctional and sustainable cellulose/graphene nanocomposite films for wearable human-motion monitoring
Publisher: Elsevier BV
Date: 11-2022
Cellulose Nanocrystals/Polyacrylamide Composites of High Sensitivity and Cycling Performance To Gauge Humidity
Publisher: American Chemical Society (ACS)
Date: 16-05-2017
Abstract: Cellulose nanocrystals (CNCs) have attracted much interest due to their unique optical property, rich resource, environment friendliness, and templating potentials. CNCs have been reported as novel photonic humidity sensors, which are unfortunately limited by the dissolution and unideal moisture absorption of CNCs. We, in this study, developed a high-performance photonic humidity composite sensor that consisted of CNCs and polyacrylamide chemical bonding was induced between the two components by using glutaraldehyde as a bridging agent. The composites inherited the chiral nematic structure of CNCs and maintained it well through a cycling test. A distinct color change was observed for these composites used as a humidity indicator the change was caused by polyacrylamide swelling with water and thus enlarging the helical pitch of the chiral nematic structure. The composites showed no degradation of the sensing performance through cycling. The excellent cycling stability was attributed to the bonding between polyacrylamide and CNCs. This composite strategy can extend to the development of other photonic indicators.
Recent advances in carbon-based nanomaterials for flame retardant polymers and composites
Publisher: Elsevier BV
Date: 05-2021
Tackling smoke toxicity and fire hazards of thermoplastic polyurethane by mechanochemical combination of Cu₂O nanoparticles and zirconium phosphate nanosheets
Publisher: Elsevier BV
Date: 06-2023
N-doped porous carbon with magnetic particles formed in situ for enhanced Cr(VI) removal
Publisher: Elsevier BV
Date: 08-2013
DOI: 10.1016/J.WATRES.2012.10.056
Abstract: A newly designed N-doped porous carbon with magnetic nanoparticles formed in situ (RHC-mag-CN) was fabricated through simple impregnation then polymerization and calcination. The doped nitrogen in RHC-mag-CN was in the form of graphite-type layers with the composition of CN. The resultant nanocomposite maintained a high surface area of 1136 m(2) g(-1) with 18.5 wt% magnetic nanoparticles (Fe3O4 and Fe) inside, which showed a saturation magnetization (Ms) of 22 emu/g. When used as an adsorbent, the RHC-mag-CN demonstrated a very quick adsorption property for the removal of Cr(VI), during which 92% of Cr(VI) could be removed within 10 min for dilute solutions at 2 g L(-1) adsorbent dose. The high adsorption capacity (16 mg g(-1)) is related to the synergetic effects of physical adsorption from the surface area and chemical adsorption from complexation reactions between Cr(VI) and Fe3O4. Importantly, the basic CNs in RHC-mag-CN increase its negative charge density and simultaneously increase the adsorption of metallic cations, such as Cr(3+) formed in the acid solution from the reduction of Cr(VI). The formation of magnetic nanoparticles inside not only supplies complexing sites for the adsorption of Cr(VI), but also shows perfect magnetic separation performance from aqueous solution.
High-performance supercapacitors using graphene/polyaniline composites deposited on kitchen sponge
Publisher: IOP Publishing
Date: 26-01-2015
DOI: 10.1088/0957-4484/26/7/075702
Abstract: We in this study used a commercial grade kitchen sponge as the scaffold where both graphene platelets (GnPs) and polyaniline (PANi) nanorods were deposited. The high electrical conductivity of GnPs (1460 S cm(-1)) enhances the pseudo-capacitive performance of PANi grown vertically on the GnPs basal planes the interconnected pores of the sponge provide sufficient inner surface between the GnPs/PANi composite and the electrolyte, which thus facilitates ion diffusion during charge and discharge processes. When the composite electrode was used to build a supercapacitor with two-electrode configuration, it exhibited a specific capacitance of 965.3 F g(-1) at a scan rate of 10 mV s(-1) in 1.0 M H2SO4 solution. In addition, the composite Nyquist plot showed no semicircle at high frequency corresponding to a low equivalent series resistance of 0.35 Ω. At 100 mV s(-1), the supercapacitor demonstrated an energy density of 34.5 Wh kg(-1) and a power density of 12.4 kW kg(-1) based on the total mass of the active materials on both electrodes. To demonstrate the performance, we built an array consisting of three cells connected in series, which lit up a red light emitting diode for five minutes. This simple method holds promise for high-performance yet low-cost electrodes for supercapacitors.
Processable 3-nm thick graphene platelets of high electrical conductivity and their epoxy composites
Publisher: IOP Publishing
Date: 27-02-2014
DOI: 10.1088/0957-4484/25/12/125707
Abstract: Graphene platelets (GnPs) are a class of novel 2D nanomaterials owing to their very small thickness (∼3 nm), high mechanical strength and electric conductivity (1460 S cm(-1)), and good compatibility with most polymers as well as cost-effectiveness. In this paper we present a low-cost processing technique for producing modified GnPs and an investigation of the electrical and mechanical properties of the resulting composites. After dispersing GnPs in solvent N-methyl-2-pyrrolidone, a long-chain surfactant (Jeffamine D 2000, denoted J2000) was added to covalently modify GnPs, yielding J2000-GnPs. By adjusting the ratio of GnPs to the solvent, the modified GnPs show different average thickness and thus electrical conductivity ranging from 694 to 1200 S cm(-1). To promote the exfoliation and dispersion of J2000-GnPs in a polymeric matrix, they were dispersed in the solvent again and further modified using diglycidyl ether of bisphenol A (DGEBA) producing m-GnPs, which were then compounded with an epoxy resin for the development of epoxy/m-GnP composites. A percolation threshold of electrical volume resistivity for the resulting composites was observed at 0.31 vol%. It was found that epoxy/m-GnP composites demonstrated far better mechanical properties than those of unmodified GnPs of the same volume fraction. For ex le, m-GnPs at 0.25 vol% increased the fracture energy release rate G1c from 0.204 ± 0.03 to 1.422 ± 0.24 kJ m(-2), while the same fraction of unmodified GnPs increased G1c to 1.01 ± 0.24 kJ m(-2). The interface modification also enhanced the glass transition temperature of neat epoxy from 58.9 to 73.8 °C.
Sonochemical fabrication of Fe3 O4 nanoparticles on reduced graphene oxide for biosensors
Publisher: Elsevier BV
Date: 05-2013
DOI: 10.1016/J.ULTSONCH.2012.12.001
Abstract: This study synthesized Fe(3)O(4) nanoparticles of 30-40nm by a sonochemical method, and these particles were uniformly dispersed on the reduced graphene oxide sheets (Fe(3)O(4)/RGO). The superparamagnetic property of Fe(3)O(4)/RGO was evidenced from a saturated magnetization of 30emu/g tested by a s le-vibrating magnetometer. Based on the testing results, we proposed a mechanism of ultrasonic waves to explain the formation and dispersion of Fe(3)O(4) nanoparticles on RGO. A biosensor was fabricated by modifying a glassy carbon electrode with the combination of Fe(3)O(4)/RGO and hemoglobin. The biosensor showed an excellent electrocatalytic reduction toward H(2)O(2) at a wide, linear range from 4×10(-6) to 1×10(-3)M (R(2)=0.994) as examined by erometry, and with a detection limit of 2×10(-6)M. The high performance of H(2)O(2) detection is attributed to the synergistic effect of the combination of Fe(3)O(4) nanoparticles and RGO, promoting the electron transfer between the peroxide and electrode surface.
Superior H2production by hydrophilic ultrafine Ta2O5engineered covalently on graphene
Publisher: IOP Publishing
Date: 21-10-2014
DOI: 10.1088/0957-4484/25/21/215401
Abstract: A H2O2-mediated hydrothermal method was developed for the fabrication of hydrophilic Ta2O5/graphene composite. The composite shows a superior H2 productivity, up to 30 mmol g(-1) h(-1) when used as a photocatalyst for water splitting, corresponding to an apparent quantum efficiency of 33.8% at 254 nm. This superior performance is due to the hydrophilic nature of the composite and more importantly due to the ultrafine Ta2O5 nanoparticles (about 4.0 ± 1.5 nm) which are covalently bonded with the conductive graphene. The hydrophilic property of the composite is attributed to the use of H2O2 in the hydrothermal process. The ultrafine size of the Ta2O5 particles which are covalently bonded with the graphene sheets is attributed to the use of sonication in the synthesis process. Furthermore, the hydrophilic Ta2O5/Gr composite is durable, which is beneficial to long term photocatalysis. The strategy reported here provides a new approach to designing photocatalysts with superior performance for H2 production.
Aerogels based on carbon nanomaterials
Publisher: Springer Science and Business Media LLC
Date: 11-07-2016
High-mass loading electrodes with exceptional areal capacitance and cycling performance through a hierarchical network of MnO2 nanoflakes and conducting polymer gel
Publisher: Elsevier BV
Date: 02-2019
Employing a novel bioelastomer to toughen polylactide
Publisher: Elsevier BV
Date: 04-2013
Combining hydrophilic MXene nanosheets and hydrophobic carbon nanotubes for mechanically resilient and electrically conductive elastomer nanocomposites
Publisher: Elsevier BV
Date: 09-2021
Effect of interface modification on PMMA/graphene nanocomposites
Publisher: Springer Science and Business Media LLC
Date: 28-05-2014
Effect of graphene nanoplatelets on water absorption and impact resistance of fibre-metal laminates under varying environmental conditions
Publisher: Elsevier BV
Date: 02-2022
Facile Fabrication of Graphene Membranes with Readily Tunable Structures
Publisher: American Chemical Society (ACS)
Date: 16-06-2015
DOI: 10.1021/AM5091287
Abstract: Advanced membranes that combine mechanical robustness with fast permeation are crucial to many applications such as water purification, ions selectivity, and gas separation. Graphene sheets offer a promising opportunity to fabricate thin, high-flux, and pressure-endurable membranes because of their unique 2D morphology, oxidizable surface, and electrical conductivity. We herein report a highly effective yet simple approach to the fabrication of graphene membranes featuring controllable oxidation degrees and thus tunable structures and properties. The graphene sheets comprise a single or a few layers with a lateral dimension of 50-100 nm their C/O ratios can be manipulated from 4.1 for graphene with a low degree of oxidation (low-oxidation graphene) to 2.5 for medium-oxidation graphene to 1.3 for high-oxidation graphene, by controlling the proportion of phosphoric acid during the 60 min fabrication. Fabricated by simple vacuum filtration, the membranes exhibited various water flux from 200.0 to 20.0 L/m(2)·h·bar at 3 bar of pressure and mechanical robustness (Young's modulus can be up to 20 GPa and tensile strength to 100 MPa). When these membranes were used as electrodes for supercapacitors, specific capacitances of 58.8 F/g and 23.5 F/cm(3) were recorded for the low-oxidation graphene membrane at 1 A/g by a two-electrode configuration the capacity values retained ∼95% after 800 cycles the high capacitance would be caused by moderate wettability and high electrical conductivity.
Elastomeric composites based on carbon nanomaterials
Publisher: IOP Publishing
Date: 23-02-2015
DOI: 10.1088/0957-4484/26/11/112001
Abstract: Carbon nanomaterials including carbon black (CB), carbon nanotubes (CNTs) and graphene have attracted increasingly more interest in academia due to their fascinating properties. These nanomaterials can significantly improve the mechanical, electrical, thermal, barrier, and flame retardant properties of elastomers. The improvements are dependent on the molecular nature of the matrix, the intrinsic property, geometry and dispersion of the fillers, and the interface between the matrix and the fillers. In this article, we briefly described the fabrication processes of elastomer composites, illuminated the importance of keeping fillers at nanoscale in matrices, and critically reviewed the recent development of the elastomeric composites by incorporating CB, CNTs, and graphene and its derivatives. Attention has been paid to the mechanical properties and electrical and thermal conductivity. Challenges and further research are discussed at the end of the article.
A comparative study of polymer nanocomposites containing multi-walled carbon nanotubes and graphene nanoplatelets
Publisher: Elsevier BV
Date: 09-2022
Using cellulose nanocrystals for graphene/hexagonal boron nitride nanosheet films towards efficient thermal management with tunable electrical conductivity
Publisher: Elsevier BV
Date: 11-2020
One-pot synthesis of carbon nanotube-graphene hybrids via syngas production
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3TA13871B
Simple fabrication of a Fe2O3/carbon composite for use in a high-performance lithium ion battery
Publisher: Elsevier BV
Date: 02-2013
Polymer composite hydrogels containing carbon nanomaterials—Morphology and mechanical and functional performance
Publisher: Elsevier BV
Date: 02-2018
A Facile Approach to Chemically Modified Graphene and its Polymer Nanocomposites
Publisher: Wiley
Date: 10-04-2012
Implication of multi-walled carbon nanotubes on polymer/graphene composites
Publisher: Elsevier BV
Date: 2015
High photocatalytic performance by engineering Bi 2 WO 6 nanoneedles onto graphene sheets
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4RA03533J
Abstract: A sonochemical method was described to engineer Bi 2 WO 6 nanoneedles on graphene sheets, which showed improved performances both in H 2 and O 2 creation.
Low-temperature, rapid preparation of functionalized graphene platelets
Publisher: Elsevier BV
Date: 12-2020
High electrochemical cycling performance through accurately inheriting hierarchical porous structure from bagasse
Publisher: Elsevier BV
Date: 04-2019
Elastomer nanocomposites containing MXene for mechanical robustness and electrical and thermal conductivity
Publisher: IOP Publishing
Date: 19-05-2020
A new approach to polymer/montmorillonite nanocomposites
Publisher: Elsevier BV
Date: 07-2003
Conducting α-Fe2O3 nanorod/polyaniline/CNT gel framework for high performance anodes towards supercapacitors
Publisher: Elsevier BV
Date: 03-2018
Corrigendum to “Structure–property relations of 55 nm particle-toughened epoxy” [Polymer 51 (2010), 4867–4879]
Publisher: Elsevier BV
Date: 02-2011
Using renewable phosphate to decorate graphene nanoplatelets for flame-retarding, mechanically resilient epoxy nanocomposites
Publisher: Elsevier BV
Date: 09-2023
Research Progress of Polymer Biomaterials as Scaffolds for Corneal Endothelium Tissue Engineering
Publisher: MDPI AG
Date: 29-06-2023
DOI: 10.3390/NANO13131976
Abstract: Nowadays, treating corneal diseases arising from injury to the corneal endothelium necessitates donor tissue, but these corneas are extremely scarce. As a result, researchers are dedicating significant efforts to exploring alternative approaches that do not rely on donor tissues. Among these, creating a tissue-engineered scaffold on which corneal endothelial cells can be transplanted holds particular fascination. Numerous functional materials, encompassing natural, semi-synthetic, and synthetic polymers, have already been studied in this regard. In this review, we present a comprehensive overview of recent advancements in using polymer biomaterials as scaffolds for corneal endothelium tissue engineering. Initially, we analyze and present the key properties necessary for an effective corneal endothelial implant utilizing polymer biomaterials. Subsequently, we focus on various emerging biomaterials as scaffolds for corneal endothelium tissue engineering. We discuss their modifications (including natural and synthetic composites) and analyze the effect of micro- and nano-topological morphology on corneal endothelial scaffolds. Lastly, we highlight the challenges and prospects of these materials in corneal endothelium tissue engineering.
Cement nanocomposites containing montmorillonite nanosheets modified with surfactants of various chain lengths
Publisher: Elsevier BV
Date: 02-2021
A reactive polymer for toughening epoxy resin
Publisher: Wiley
Date: 02-11-2009
DOI: 10.1002/APP.31001
Bioinspired polymeric photonic crystals for high cycling pH-sensing performance
Publisher: American Chemical Society (ACS)
Date: 28-09-2016
Abstract: Artificial photonic crystals (PCs) have been extensively studied to improve the sensing performance of poly(acrylic acid) (PAAc), as it can transform the PAAc volume change into optical signal which is easier to read. Nevertheless, these PCs are limited by the monostructure. We herein developed new photonic crystals (PCs) by coating acrylic acid and acrylamide (AAm) via in situ copolymerization onto Papilio paris wings having hierarchical, lamellar structure. Our PCs exhibited high performance of color tunability to environmental pH, as detected by reflectance spectra and visual observation. The introduction of AAm into the system created covalent bonding which robustly bridged the polymer with the wings, leading to an accurate yet broad variation of reflection wavelength to gauge environmental pH. The reflection wavelength can be tailored by the refractive index of the lamellar interspacing due to the swelling/deswelling of the polymer. The mechanism is not only supported by experimenta but proved by finite-difference time-domain simulation. Moreover, It is worth noting that the covalent bonding has provided the PCs-based pH sensor with high cycling performance, implying great potential in practical applications. The simple fabrication process is applicable to the development of a wide variety of stimuli-responsive PCs taking advantage of other polymers.
Cementitious composites containing alum sludge ash: An investigation of microstructural features by an advanced nanoindentation technology
Publisher: Elsevier BV
Date: 09-2021
Exfoliation and dispersion of graphene nanoplatelets for epoxy nanocomposites
Publisher: Elsevier BV
Date: 2024
Fabrication and characterization of an organic-inorganic gradient surface made by polymethylsilsesquioxane (PMSQ)
Publisher: Wiley
Date: 22-09-2006
Electrically and thermally conductive elastomer/graphene nanocomposites by solution mixing
Publisher: Elsevier BV
Date: 2014
Thermal Degradation and Fire Properties of Fungal Mycelium and Mycelium - Biomass Composite Materials
Publisher: Springer Science and Business Media LLC
Date: 04-12-2018
DOI: 10.1038/S41598-018-36032-9
Abstract: Mycelium and mycelium-biomass composites are emerging as new sustainable materials with useful flame-retardant potentials. Here we report a detailed characterisation of the thermal degradation and fire properties of fungal mycelium and mycelium-biomass composites. Measurements and analyses are carried out on key parameters such as decomposition temperatures, residual char, and gases evolved during pyrolysis. Pyrolysis flow combustion calorimetry (PCFC) evaluations reveal that the corresponding combustion propensity of mycelium is significantly lower compared to poly(methyl methacrylate) (PMMA) and polylactic acid (PLA), indicating that they are noticeably less prone to ignition and flaming combustion, and therefore safer to use. The hyphal diameters of mycelium decrease following pyrolysis. Cone calorimetry testing results show that the presence of mycelium has a positive influence on the fire reaction properties of wheat grains. This improvement is attributable to the relatively higher charring tendency of mycelium compared to wheat grain, which reduces the heat release rate (HRR) by acting as a thermal insulator and by limiting the supply of combustible gases to the flame front. The mycelium growth time has been found to yield no significant improvements in the fire properties of mycelium-wheat grain composites.
Graphene oxide and hyperbranched polymer-toughened hydrogels with improved absorption properties and durability
Publisher: Springer Science and Business Media LLC
Date: 20-02-2015
Multithiol functionalized graphene bio-sponge via photoinitiated thiol-ene click chemistry for efficient heavy metal ions adsorption
Publisher: Elsevier BV
Date: 09-2020
Surface-tunable, electrically conductive and inexpensive graphene platelets and their hydrophilic polymer nanocomposites
Publisher: Elsevier BV
Date: 09-2020
Flexible, mechanically resilient carbon nanotube composite films for high-efficiency electromagnetic interference shielding
Publisher: Elsevier BV
Date: 09-2018
Effects of heat and pressure on intercalation structures of isobutylene‐isoprene rubber/clay nanocomposites. I. Prepared by melt blending
Publisher: Wiley
Date: 08-08-2005
DOI: 10.1002/POLB.20555
Recent progress in the development of thermal interface materials: a review
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D0CP05514J
Abstract: Recent progress in the development of thermal interface materials.
A Novel Method for Preparation of Disorderly Exfoliated Epoxy/Clay Nanocomposite
Publisher: American Chemical Society (ACS)
Date: 14-02-2004
DOI: 10.1021/CM0349203
Influence of prolonging vulcanization on the structure and properties of hard rubber
Publisher: Wiley
Date: 20-09-2007
DOI: 10.1002/APP.27086
Comparative Study of Nanocarbon-Based Flexible Multifunctional Composite Electrodes
Publisher: American Chemical Society (ACS)
Date: 20-01-2021
Development of polymer composites using modified, high-structural integrity graphene platelets
Publisher: Elsevier BV
Date: 2014
Synthesis and structure of polymethylsilsesquioxane-clay nanocomposite via in situ intercalative polymerization
Publisher: Wiley
Date: 17-10-2002
DOI: 10.1002/APP.11369
Porphyrin-based graphene oxide frameworks with ultra-large d-spacings for the electrocatalyzation of oxygen reduction reaction
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5CP02853A
Abstract: Graphene oxide frameworks with ultralarge d -spacings of up to 26 Å were synthesized by using porphyrins as molecular pillars of graphene sheets, showing potential applications as electrocatalysts for oxygen reduction reaction.
Effect of acid and TETA modification on mechanical properties of MWCNTs/epoxy composites
Publisher: Springer Science and Business Media LLC
Date: 19-02-2008
Advancement in liquid exfoliation of graphite through simultaneously oxidizing and ultrasonicating
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4TA04367G
Abstract: Simultaneously oxidizing and ultrasonicating graphite for 60 min can create high-structural integrity yet solution-processable graphene for a great many applications.
A path beyond metal and silicon: polymer/nanomaterial composites for stretchable strain sensors
Publisher: Wiley
Date: 18-02-2019
A new method for preparation of functionalized graphene and its epoxy nanocomposites
Publisher: Elsevier BV
Date: 09-2020
Highly Sensitive, Wearable, Durable Strain Sensors and Stretchable Conductors Using Graphene/Silicon Rubber Composites
Publisher: Wiley
Date: 14-09-2016
A chiral smectic structure assembled from nanosheets and nanorods
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6CC08337D
Abstract: A chiral smectic structure assembled from nanosheets and nanorods should open a new route to create a variety of chiral structures.
Smart thin-film piezoelectric composite sensors based on high lead zirconate titanate content
Publisher: SAGE Publications
Date: 04-12-2015
Abstract: Piezoelectric composites are hybrid materials primarily consisting of polymer matrices and micro-sized particles of ferroelectric ceramic. While incorporating high-fraction ceramic particles into composites is indispensable to meet the ever increasing requirement of sensitivity, it is a great challenge to achieve such a high concentration due to processing difficulties. In this study, we developed piezoelectric composites of 0-3 geometry containing 95 wt% (∼73 vol%) lead zirconate titanate particles by modifying the surface of lead zirconate titanate particles with isophorone diisocyanate and polyoxyalkyleneamine (J2000) and compounding them with epoxy resin. The functional groups of J2000 molecules covalently grafted onto the particle surface can react with the matrix, thus creating a robust linkage between the matrix and the particles. This improved the particle dispersion and the interface, enabling the development of a superior composite film with high lead zirconate titanate fractions. Modified piezocomposites can save up to 75% poling time at 75% lower voltage in comparison with the unmodified s le as well as previous studies. The remarkable improvement is indebted to the two-stage interface modification process and the layer-by-layer fabrication method.
Compact, flexible conducting polymer/graphene nanocomposites for supercapacitors of high volumetric energy density
Publisher: Elsevier BV
Date: 05-2018
Filling natural microtubules with triphenyl phosphate for flame-retarding polymer composites
Publisher: Elsevier BV
Date: 12-2018
Polyaspartic polyurea/graphene nanocomposites for multifunctionality: Self-healing, mechanical resilience, electrical and thermal conductivities, and resistance to corrosion and impact
Publisher: Elsevier BV
Date: 08-2023
Improvement of adhesive toughness measurement
Publisher: Elsevier BV
Date: 04-2011
Novel polyacrylamide hydrogels by highly conductive, water-processable graphene
Publisher: Elsevier BV
Date: 02-2017
Toughening mechanisms in epoxy/graphene platelets composites
Publisher: Elsevier
Date: 2015
Study of epoxy toughened by in situ formed rubber nanoparticles
Publisher: Wiley
Date: 09-07-2008
DOI: 10.1002/APP.27882
Fe2O3/TiO2 photocatalyst of hierarchical structure for H2 production from water under visible light irradiation
Publisher: Elsevier BV
Date: 05-2014
Bioinspired Fabrication of Hierarchically Structured, pH-Tunable Photonic Crystals with Unique Transition
Publisher: American Chemical Society (ACS)
Date: 23-05-2013
DOI: 10.1021/NN400090J
Abstract: We herein report a new class of photonic crystals with hierarchical structures, which are of color tunability over pH. The materials were fabricated through the deposition of polymethylacrylic acid (PMAA) onto a Morpho butterfly wing template by using a surface bonding and polymerization route. The amine groups of chitosan in Morpho butterfly wings provide reaction sites for the MAA monomer, resulting in hydrogen bonding between the template and MAA. Subsequent polymerization results in PMAA layers coating homogenously on the hierarchical photonic structures of the biotemplate. The pH-induced color change was detected by reflectance spectra as well as optical observation. A distinct U transition with pH was observed, demonstrating PMAA content-dependent properties. The appearance of the unique U transition results from electrostatic interaction between the -NH3(+) of chitosan and the -COO(-) groups of PMAA formed, leading to a special blue-shifted point at the pH value of the U transition, and the ionization of the two functional groups in the alkali and acid environment separately, resulting in a red shift. This work sets up a strategy for the design and fabrication of tunable photonic crystals with hierarchical structures, which provides a route for combining functional polymers with biotemplates for wide potential use in many fields.
Toughening polymer adhesives using nanosized elastomeric particles
Publisher: Springer Science and Business Media LLC
Date: 11-03-2014
DOI: 10.1557/JMR.2014.34
Facile Synthesis and Assembly of Cu2S Nanodisks to Corncoblike Nanostructures
Publisher: American Chemical Society (ACS)
Date: 10-2006
DOI: 10.1021/CM0617135
Reinforcement of Elastomer by Starch
Publisher: Wiley
Date: 07-06-2006
Melt compounding with graphene to develop functional, high-performance elastomers
Publisher: IOP Publishing
Date: 27-03-2013
DOI: 10.1088/0957-4484/24/16/165601
Abstract: Rather than using graphene oxide, which is limited by a high defect concentration and cost due to oxidation and reduction, we adopted cost-effective, 3.56 nm thick graphene platelets (GnPs) of high structural integrity to melt compound with an elastomer-ethylene-propylene-diene monomer rubber (EPDM)-using an industrial facility. An elastomer is an amorphous, chemically crosslinked polymer generally having rather low modulus and fracture strength but high fracture strain in comparison with other materials and upon removal of loading, it is able to return to its original geometry, immediately and completely. It was found that most GnPs dispersed uniformly in the elastomer matrix, although some did form clusters. A percolation threshold of electrical conductivity at 18 vol% GnPs was observed and the elastomer thermal conductivity increased by 417% at 45 vol% GnPs. The modulus and tensile strength increased by 710% and 404% at 26.7 vol% GnPs, respectively. The modulus improvement agrees well with the Guth and Halpin-Tsai models. The reinforcing effect of GnPs was compared with silicate layers and carbon nanotube. Our simple fabrication would prolong the service life of elastomeric products used in dynamic loading, thus reducing thermosetting waste in the environment.
In situ modification of BiVO4 nanosheets on graphene for boosting photocatalytic water oxidation
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0NR02718A
Abstract: We propose an innovative in situ modification strategy for constructing ultrapure BiVO 4 nanosheets on graphene toward accelerated photocatalytic water oxidation reaction.
Failure mechanism of graphene kirigami under nanoindentation
Publisher: IOP Publishing
Date: 24-06-2022
Abstract: Though graphene is the strongest material in nature, its intrinsic brittleness hinders its applications where flexibility is the key figure of merits. In this work, we report the enhanced flexibility of graphene under nanoindentation by using kirigami technique. Based on molecular dynamics simulations, we find that graphene kirigami designed at the optimal cut parameter can sustain more than 45% larger out-of-plane deformation than its pristine counterpart while the maximum impact load is reduced by 20% due to the flexible cut edges. This trade-off between flexibility and strength in a graphene kirigami can be overcome by adding a pristine graphene as a supporting substrate. This double-layer structure consisting of one graphene kirigami and one pristine graphene can stand the maximum impact load three times larger than the single-layer graphene kirigami but its maximum indentation depth is merely 8% smaller. Our simulation results provide useful insights into the failure mechanism of the graphene kirigami under nanoindentation and useful guidelines to enhancing the flexibility of graphene for its applications as protection materials.
New Method To Prepare Graphite Nanocomposites
Publisher: American Chemical Society (ACS)
Date: 20-02-2008
DOI: 10.1021/CM703285S
Photothermal ultra-high molecular weight polyethylene/MXene aerogel for crude oil adsorption and water evaporation
Publisher: IOP Publishing
Date: 22-03-2023
Abstract: The frequent oil spill accidents during oil exploration and transportation have caused large economic loss and catastrophic environmental disasters. Due to low cost and simplicity, adsorption and filtration materials are often chosen to deal with oil spills, but the outcomes are not satisfactory mainly because of the awfully high viscosity of crude oil. Herein a photothermal ultra-high molecular weight polyethylene/MXene composite aerogel with a high light absorption (99.97%) and water repellency (water contact angle °) is developed by thermally induced phase separation method. The composite aerogel endows durable hydrophobicity with which the water contact angle is more than 142° in acidic/alkaline environments, and the maximum absorption capacity of 81 g g −1 . In addition, it exhibits an excellent photothermal performance, rising surface temperature to 70 °C within 60 s under 1 sun irradiation, that can drastically reduce the crude oil absorption time from 60 min to 60 s, saving 98% of absorption time and reaching a crude oil absorption capacity of 21 g g −1 . More interestingly, the designed solar evaporation device with the obtained composite aerogel can achieve an evaporation rate of 1.15 kg m −2 h −1 and evaporation efficiency of 74%. The designed composite aerogel opens a possible pathway for solar-powered crude oil adsorption applications.
Related Organisations
Related Funding Activities
ARC Training Centre In Fire Retardant Materials And Safety Technologies
Start Date: 2016
End Date: 2018
Funder: Australian Research Council
View Funded ActivityA Novel Approach To Polymer/Nanosheet Composites And Their Fundamentals.
Start Date: 2020
End Date: 2023
Funder: Australian Research Council
View Funded ActivityThe Development Of Super-toughened Epoxies Using Novel Nanomaterials
Start Date: 2006
End Date: 2009
Funder: Australian Research Council
View Funded ActivityElastomer/Graphene Composites For Reinforcement At Low Strain
Start Date: 2019
End Date: 2024
Funder: Australian Research Council
View Funded ActivityThe Development Of Advanced Adhesives Based Upon Nano-additives
Start Date: 2009
End Date: 2012
Funder: AutoCRC
View Funded ActivityStrong And Durable Flame-Retarding Composites By Multi-scale Encapsulation And Reinforcement
Start Date: 2014
End Date: 2019
Funder: Australian Research Council
View Funded ActivityHigh-Performance Polymer Composites For Electrical Discharging
Start Date: 2019
End Date: End date not available
Funder: Australian Research Council
View Funded ActivityElectrically Conductive Elastomeric Composites By Nanomaterials
Start Date: 2016
End Date: 2019
Funder: Australian Research Council
View Funded ActivityARC Research Hub For Graphene Enabled Industry Transformation
Start Date: 2015
End Date: 2019
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP0559166
Start Date: 06-2005
End Date: 09-2008
Amount: $121,000.00
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP230100688
Start Date: 2024
End Date: 12-2026
Amount: $501,504.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE230100018
Start Date: 2023
End Date: 12-2023
Amount: $2,206,421.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP180100005
Start Date: 01-2020
End Date: 01-2024
Amount: $330,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP200100617
Start Date: 07-2021
End Date: 06-2024
Amount: $215,000.00
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP0666261
Start Date: 01-2006
End Date: 12-2009
Amount: $285,000.00
Funder: Australian Research Council
View Funded ActivityIndustrial Transformation Research Hubs - Grant ID: IH150100003
Start Date: 12-2015
End Date: 06-2022
Amount: $2,611,346.00
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP200101737
Start Date: 06-2020
End Date: 12-2023
Amount: $350,000.00
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP220103275
Start Date: 06-2022
End Date: 06-2025
Amount: $210,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP140100605
Start Date: 05-2015
End Date: 05-2018
Amount: $225,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE180100129
Start Date: 2018
End Date: 12-2019
Amount: $425,200.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP160100717
Start Date: 11-2016
End Date: 08-2018
Amount: $229,000.00
Funder: Australian Research Council
View Funded Activity