ORCID Profile
0000-0002-3792-1140
Current Organisation
Deakin University
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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 | Polymers and Plastics | Functional Materials | Theory and Design of Materials | Automotive Engineering Materials | Manufacturing Processes and Technologies (excl. Textiles) | Metals and Alloy Materials | Textile Technology |
ANZSRC Socio-Economic Objective (SEO)
Expanding Knowledge in Engineering | Expanding Knowledge in the Chemical Sciences | Natural Fibres, Yarns and Fabrics | Plastics in Primary Forms | Plastic Products (incl. Construction Materials) | Automotive Equipment | Structural Metal Products | Synthetic Fibres, Yarns and Fabrics | Environmentally Sustainable Manufacturing not elsewhere classified | Expanding Knowledge in Technology
Related Links
Publications
A Phosphorus-Containing Diamine for Flame-Retardant, High-Functionality Epoxy Resins. I. Synthesis, Reactivity, and Thermal Degradation Properties
Publisher: Wiley
Date: 08-03-2004
DOI: 10.1002/APP.20145
Investigation of the reaction mechanism of different epoxy resins using a phosphorus‐based hardener
Publisher: Wiley
Date: 19-01-2006
DOI: 10.1002/APP.23016
Thermally activated healing in a mendable resin using a non woven EMAA fabric
Publisher: Elsevier BV
Date: 02-2012
Thermoplastic healing in epoxy networks: Exploring performance and mechanism of alternative healing agents
Publisher: Wiley
Date: 18-04-2013
Acclimatization to Hearing Aids
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 03-2014
Use of layered silicates to supplementary toughen high performance epoxy-carbon fiber composites
Publisher: Springer Science and Business Media LLC
Date: 2003
Biocompatibility and modification of the protein-based adhesive secreted by the Australian frog Notaden bennetti
Publisher: Wiley
Date: 30-06-2010
DOI: 10.1002/JBM.A.32559
Abstract: When provoked, Notaden bennetti frogs secrete a proteinaceous exudate, which rapidly forms a tacky and elastic glue. This material has potential in biomedical applications. Cultured cells attached and proliferated well on glue-coated tissue culture polystyrene, but migrated somewhat slower than on uncoated surfaces. In organ culture, dissolved glue successfully adhered collagen-coated perfluoropolyether lenses to debrided bovine corneas and supported epithelial regrowth. Small pellets of glue implanted subcutaneously into mice were resorbed by surrounding tissues, and all of the animals made a full recovery. An initial but transient skin necrosis at the implant site was probably caused by some of the potentially toxic metabolites present in the frog secretion these include sterols and carotenoids, as well as fatty alcohols, aldehydes, ketones, acids, and aromatic compounds. Removal of the carotenoid pigments did not significantly alter the glue's material properties. In contrast, peroxidase treatment of dissolved glue introduced unnatural crosslinks between molecules of the major protein (Nb-1R) and resulted in the formation of a soft hydrogel, which was very different to the original material.
Poly(ethylene- co -methacrylic acid) (EMAA) as an efficient healing agent for high performance epoxy networks using diglycidyl ether of bisphenol A (DGEBA)
Publisher: Elsevier BV
Date: 06-2016
Influence of substituents on the kinetics of epoxy/aromatic diamine resin systems
Publisher: Wiley
Date: 19-05-2004
DOI: 10.1002/POLA.20169
Toughening of a trifunctional epoxy system Part III. Kinetic and morphological study of the thermoplastic modified cure process
Publisher: Elsevier BV
Date: 04-2000
Effect of boric acid on the stabilisation of cellulose-lignin filaments as precursors for carbon fibres
Publisher: Springer Science and Business Media LLC
Date: 25-11-2021
Development of a quasi-static test method to investigate the origin of self-healing in ionomers under ballistic conditions
Publisher: Elsevier BV
Date: 02-2008
Phosphorus-Based α-Amino Acid Mimetic for Enhanced Flame-Retardant Properties in an Epoxy Resin
Publisher: CSIRO Publishing
Date: 12-12-2018
DOI: 10.1071/CH18527
Abstract: This work demonstrates the introduction of a phosphonate moiety into a commonly used curing agent, 4,4′-diaminodiphenylmethane (DDM), via an α-aminophosphonate. This compound (DDMP) can be prepared and isolated in analytical purity in under 1 h and in good yield (71 %). Thermoset polymer (epoxy-derived) s les were prepared using a room-temperature standard cure (SC) and a post-cured (PC) protocol to encourage incorporation of the α-aminophosphonate into the polymer network, with improved flammability properties observed for the latter. Thermogravimetric analysis under a nitrogen atmosphere showed increased char yield at 600°C, and similar observations were made when analysis was conducted in air. Significant reductions in flammability are observed at very low phosphorus content (P% = 0.16–0.49 %), demonstrated by higher char yields (25.5 from 14.0 % in air), decreased burn time from ignition (60 to 24 s), and decreased mass loss after ignition (87.6 to 58.5 %). Limiting Oxygen Index for the neat polymer (P% = 0 %, 20.3 ± 0.8 %) increased with increasing α-aminophosphonate additive (P% = 0.16 %, 20.8 ± 0.6 % P% = 0.32 %, 21.4 ± 0.4 % P% = 0.49 %, 22.6 ± 0.8 %).
New approaches to bonding thermoplastic and thermoset polymer composites
Publisher: Elsevier BV
Date: 06-2020
Thermal and mechanical characterisation of intercalated epoxy nanocomposites
Publisher: Inderscience Publishers
Date: 2003
A healable polyethylene adhesive using poly(ethylene methacrylic acid) (EMAA) for three-layer pipe coatings
Publisher: IOP Publishing
Date: 14-01-2021
Abstract: Poly(ethylene methacrylic acid) (EMAA) has been used here as a thermally activated healing agent (HA) in three layered polyolefinic (3LPO) pipe coatings for the first time. The EMAA (HA) is blended with a linear low density polyethylene (LLDPE) modified with maleic anhydride (MAH) to create a healable multi-functional adhesive (HAMA), which is used to bind the fusion bonded epoxy primer and high density polyethylene topcoat layers together. Different compositions of the HA and modified adhesive were trialled for their healing efficiency using three different healing conditions to explore the effect of increasing temperature and applied load or force. The standard healing protocol used a healing temperature of 110 °C and an applied load of 120 N for 60 min. A high temperature variant increased the temperature to 120 °C while a high load variant increased the applied force to 240 N. Using a 1:1 HAMA adhesive, healing efficiencies of about 70% were achieved for the standard healing condition. Increasing the applied load to 240 N decreased healing to between 64% and 68% depending on the healing measurement, but at 120 °C healing increased to between 82% and 84%. Regardless of the healing condition, overall healing efficiency increased with increasing EMAA (HA) concentration. This study also provided insight into the healing mechanism of the HAMA adhesives by highlighting some necessary features for healing. A bi-phasic microstructure consisting of large EMAA nodules with sufficient adhesion to the MAH-modified LLDPE was identified as being critical. Furthermore, increasing healing temperature increased healing efficiency due to the enhanced flow of EMAA and increased mobility of the polyethylene. Although these results are preliminary in nature, they do provide significant promise that multifunctional HAMA adhesives can be applied as simple, effective and repeatable 3LPO self-healing pipe coatings.
Toughening of a trifunctional epoxy system
Publisher: Elsevier BV
Date: 04-2001
Healing of fatigue delamination cracks in carbon-epoxy composite using mendable polymer stitching
Publisher: SAGE Publications
Date: 20-09-2014
Abstract: This article presents an experimental investigation into the mode I delamination fatigue properties and fatigue crack healing mechanism of a self-healing carbon fibre–epoxy composite containing mendable thermoplastic stitches. Mode I interlaminar fatigue tests using double cantilever bending specimens show that through-the-thickness reinforcement of the composite with mendable poly(ethylene- co-(methacrylic acid)) stitches is highly effective in healing delamination cracks and restoring the fatigue properties. Aided by a pressure delivery mechanism unique to this type of mendable thermoplastic, the healing agent stored in an interconnected network of stitches is able to flow into narrow delamination cracks. The mode I interlaminar fatigue resistance as well as the fracture toughness of the composite was fully restored by poly(ethylene- co-(methacrylic acid)) stitches. Transverse tension tests were performed to determine the traction law of the healing agent, which controls the healing efficiency and interlaminar toughening mechanism under static and fatigue mode I interlaminar loading.
Preparation and characterisation of polyamide–polyimide organoclay nanocomposites
Publisher: Wiley
Date: 24-01-2008
DOI: 10.1002/PI.2385
Cellulose-lignin composite fibers as precursors for carbon fibers: Part 2 – The impact of precursor properties on carbon fibers
Publisher: Elsevier BV
Date: 12-2020
Synthesis, thermal behavior, and cone calorimetry of organophosphorus epoxy materials
Publisher: Wiley
Date: 21-10-2003
DOI: 10.1002/APP.12983
Chemically Accelerated Stabilization of a Cellulose–Lignin Precursor as a Route to High Yield Carbon Fiber Production
Publisher: American Chemical Society (ACS)
Date: 18-01-2022
DOI: 10.1021/ACS.BIOMAC.1C01226
Abstract: The production of carbon fiber from bio-based or renewable resources has gained considerable attention in recent years with much of the focus upon cellulose, lignin, and cellulose-lignin composite precursor fibers. A critical step in optimizing the manufacture of carbon fiber is the stabilization process, through which the chemical and physical structure of the precursor fiber is transformed, allowing it to withstand very high temperatures. In this work, thermogravimetric analysis (TGA) is used to explore and optimize stabilization by simulating different stabilization profiles. Using this approach, we explore the influence of atmosphere (nitrogen or air), cellulose-lignin composition, and alternative catalysts on the carbon yield, efficiency, and rate of stabilization. Carbon dioxide and water vapor released during stabilization are analyzed by Fourier transform infrared (FTIR) spectroscopy, providing further information about the stabilization mechanism and the accelerating effect of oxygen and increased char yield (carbon content), especially for lignin. A range of different catalysts are evaluated for their ability to enhance the char yield, and a phosphorus-based flame retardant (H
Life Cycle Engineering of Carbon Fibres for Lightweight Structures
Publisher: Elsevier BV
Date: 2018
Phosphorus-containing diamine for flame retardancy of high functionality epoxy resins. Part II. The thermal and mechanical properties of mixed amine systems
Publisher: Elsevier BV
Date: 03-2006
Microwave attenuation of graphene modified thermoplastic poly(butylene adipate-coterephthalate) nanocomposites
Publisher: MDPI AG
Date: 25-05-2018
Investigation of the processability, thermal, mechanical and flame retardant properties of bisoxazoline composites
Publisher: Elsevier BV
Date: 03-2022
Beyond the ring flip: A molecular signature of the glass–rubber transition in tetrafunctional epoxy resins
Publisher: Elsevier BV
Date: 10-2020
Double‐ and triple‐duty actions in childhood for addressing the global syndemic of obesity, undernutrition, and climate change: A scoping review
Publisher: Wiley
Date: 08-02-2023
DOI: 10.1111/OBR.13555
Abstract: Obesity, undernutrition, and climate change constitute a global syndemic that disproportionately affects vulnerable populations, including children. Double‐ and triple‐duty actions that simultaneously address these pandemics are needed to prevent further health, economic, and environmental consequences. Evidence describing the implementation and evaluation of such actions is lacking. This review summarized the literature on whole‐of‐population actions targeting children that were designed or adapted to be double or triple duty. Six academic databases were searched (January 2015–March 2021) using terms related to ‘children’, ‘intervention’, ‘nutrition’, ‘physical activity’, and ‘climate change’. Data were extracted from 43/15,475 studies, including six randomized controlled trials. Most (58%) described triple‐duty actions targeting food systems in schools such as implementing guidelines for healthier and environmentally sustainable school meals programs, and 51% reported engaging community in the design, implementation, and/or evaluation of actions. Changes in dietary intake, diet composition, greenhouse gas emissions, and food waste were the most frequently reported outcomes and 21 studies (three randomized controlled trials) showed positive double‐ or triple‐duty effects. This review is the first to demonstrate that double‐ and triple‐duty actions for addressing the global syndemic in childhood have been implemented and can have a positive impact on obesity, undernutrition, and climate change.
Gas Emission Study of the Polyacrylonitrile-Based Continuous Pilot-Scale Carbon Fiber Manufacturing Process
Publisher: American Chemical Society (ACS)
Date: 22-11-2021
Recovery of Mode I self-healing interlaminar fracture toughness of fiber metal laminate by modified double cantilever beam test
Publisher: Elsevier BV
Date: 12-2019
Moisture induced crack filling in barrier coatings containing montmorillonite as an expandable phase
Publisher: Elsevier BV
Date: 04-2008
Rapid Cross-Linking of Epoxy Thermosets Induced by Solvate Ionic Liquids
Publisher: American Chemical Society (ACS)
Date: 19-06-2020
The role of nanodispersion on the fire performance of organoclay–polyamide nanocomposites
Publisher: Elsevier BV
Date: 11-2008
Thermoplastic toughening of epoxy resins: a critical review
Publisher: Wiley
Date: 1998
DOI: 10.1002/(SICI)1099-1581(199801)9:1<3::AID-PAT727>3.0.CO;2-I
Toughening of a trifunctional epoxy system. II. Thermal characterization of epoxy/amine cure
Publisher: Wiley
Date: 20-06-1996
DOI: 10.1002/(SICI)1097-4628(19960620)60:12<2251::AID-APP24>3.0.CO;2-8
Universal Cure-Induced Shrinkage Model Applied to an Epoxy Amine as a Method to Optimize Composite Processing Time, Shrinkage, and Residual Stress
Publisher: American Chemical Society (ACS)
Date: 30-08-2022
Cure Kinetics and Network Development of a Very High Tg Naphthalene-Based Epoxy Amine Network
Publisher: American Chemical Society (ACS)
Date: 04-10-2021
The effect of compatibilization on the behavior of a polycarbonate/polymer liquid crystal blend
Publisher: Wiley
Date: 04-1996
DOI: 10.1002/PEN.10492
Understanding the influence of key parameters on the stabilisation of cellulose-lignin composite fibres
Publisher: Springer Science and Business Media LLC
Date: 26-11-2021
Mechanical properties of mendable composites containing self-healing thermoplastic agents
Publisher: Elsevier BV
Date: 10-2014
A review of the structural factors which control compression in carbon fibres and their composites
Publisher: Elsevier BV
Date: 2023
Special Topic Issue on Self-Healing Materials
Publisher: SAGE Publications
Date: 17-12-2013
Dynamic Nanohybrid-Polysaccharide Hydrogels for Soft Wearable Strain Sensing
Publisher: MDPI AG
Date: 21-05-2021
DOI: 10.3390/S21113574
Abstract: Electroconductive hydrogels with stimuli-free self-healing and self-recovery (SELF) properties and high mechanical strength for wearable strain sensors is an area of intensive research activity at the moment. Most electroconductive hydrogels, however, consist of static bonds for mechanical strength and dynamic bonds for SELF performance, presenting a challenge to improve both properties into one single hydrogel. An alternative strategy to successfully incorporate both properties into one system is via the use of stiff or rigid, yet dynamic nano-materials. In this work, a nano-hybrid modifier derived from nano-chitin coated with ferric ions and tannic acid (TA/Fe@ChNFs) is blended into a starch olyvinyl alcohol olyacrylic acid (St/PVA/PAA) hydrogel. It is hypothesized that the TA/Fe@ChNFs nanohybrid imparts both mechanical strength and stimuli-free SELF properties to the hydrogel via dynamic catecholato-metal coordination bonds. Additionally, the catechol groups of TA provide mussel-inspired adhesion properties to the hydrogel. Due to its electroconductivity, toughness, stimuli-free SELF properties, and self-adhesiveness, a prototype soft wearable strain sensor is created using this hydrogel and subsequently tested.
Investigation of factors impacting the in-service degradation of aerospace coatings
Publisher: Elsevier BV
Date: 08-2012
Effect of modification of cyclic butylene terephthalate on crystallinity and properties after ring-opening polymerisation
Publisher: Springer Science and Business Media LLC
Date: 08-09-2015
Synthesis of tri‐aryl ketone amine isomers and their cure with epoxy resins
Publisher: Wiley
Date: 10-12-2019
DOI: 10.1002/PAT.4818
The effect of cluster plasticisation on the self healing behaviour of ionomers
Publisher: Elsevier BV
Date: 02-2010
Thermo-reversible healing in a crosslinked polymer network containing covalent and thermo-reversible bonds
Publisher: Wiley
Date: 10-10-2013
DOI: 10.1002/APP.38578
Autonomous damage initiated healing in a thermo-responsive ionomer
Publisher: Wiley
Date: 19-07-2010
DOI: 10.1002/PI.2841
Study of the acoustic emission response to a core-shell rubber-toughened, high-temperature composite
Publisher: Springer Science and Business Media LLC
Date: 03-01-2021
Different β nucleants and the resultant microstructural, fracture, and tensile properties for filled and unfilled ISO polypropylene
Publisher: Wiley
Date: 11-07-2013
DOI: 10.1002/APP.38152
Premature deaths attributable to the consumption of ultra-processed foods: a comparative assessment modelling study in eight countries
Publisher: Cold Spring Harbor Laboratory
Date: 05-10-2023
Phosphorus intercalation of halloysite nanotubes for enhanced fire properties of polyamide 6
Publisher: Wiley
Date: 18-01-2012
DOI: 10.1002/PAT.3030
Processing and chemorheology of epoxy resins and their blends with dendritic hyperbranched polymers
Publisher: Wiley
Date: 03-2004
DOI: 10.1002/APP.20106
The role of β relaxations in controlling compressive properties in hyperbranched polymer-modified epoxy networks
Publisher: Springer Science and Business Media LLC
Date: 28-10-2020
Designing green, self-healing coatings for metal protection
Publisher: Springer Science and Business Media LLC
Date: 10-2010
Enhancement of ionic conduction and mechanical properties for all-solid-state polymer electrolyte systems through ionic and physical bonding
Publisher: Elsevier BV
Date: 03-2022
Subtle variations in the structure of crosslinked epoxy networks and the impact upon mechanical and thermal properties
Publisher: Wiley
Date: 10-01-2020
DOI: 10.1002/APP.48874
Modelling and analysis of the energy intensity in polyacrylonitrile (PAN) precursor and carbon fibre manufacturing
Publisher: Elsevier BV
Date: 06-2021
Time dependent structure and property evolution in fibres during continuous carbon fibre manufacturing
Publisher: MDPI AG
Date: 04-2019
DOI: 10.3390/MA12071069
Abstract: Here we report on how residence time influences the evolution of the structure and properties through each stage of the carbon fibre manufacturing process. The chemical structural transformations and density variations in stabilized fibres were monitored by Fourier Transform Infrared Spectroscopy and density column studies. The microstructural evolution and property variation in subsequent carbon fibres were studied by X-ray diffraction and monofilament tensile testing methods, which indicated that the fibres thermally stabilized at longer residence times showed higher degrees of structural conversion and attained higher densities. Overall, the density of stabilized fibres was maintained in the optimal range of 1.33 to 1.37 g/cm3. Interestingly, carbon fibres manufactured from higher density stabilized fibres possessed lower apparent crystallite size (1.599 nm). Moreover, the tensile strength of carbon fibres obtained from stabilized fibres at the high end of the observed range (density: 1.37 g/cm3) was at least 20% higher than the carbon fibres manufactured from low density (1.33 g/cm3) stabilized fibres. Conversely, the tensile modulus of carbon fibres produced from low density stabilized fibres was at least 17 GPa higher than those from high density stabilized fibres. Finally, it was shown that there is potential to customize the required properties of resultant carbon fibres suiting specific applications via careful control of residence time during the stabilization stage.
Layered silicate nanocomposites based on various high‐functionality epoxy resins: The influence of an organoclay on resin cure
Publisher: Wiley
Date: 04-2003
DOI: 10.1002/PEN.10070
Understanding the effect of nano-modifier addition upon the properties of fibre reinforced laminates
Publisher: Elsevier BV
Date: 03-2008
Solid-state healing of resins and composites
Publisher: Elsevier
Date: 2015
The effect of DOPO concentration and epoxy amine stoichiometry on the rheological, thermal, mechanical and fire‐retardant properties of crosslinked networks
Publisher: Wiley
Date: 24-07-2022
DOI: 10.1002/PI.6436
Abstract: Presented here is an investigation into the effect of a phosphorus‐based fire retardant on the thermal, rheological and mechanical properties and flammability of an epoxyamine network prepared using stoichiometric and off‐stoichiometric epoxyamine compositions. The flame retardant 9,10‐dihydro‐9‐oxa‐10‐phosphaphenanthrene‐10‐oxide (DOPO) was reactively incorporated into a blend of a bisphenol‐F diglycidyl ether epoxy resin and a polyfunctional epoxidized phenol Novolac resin, then cured with diethyltoluenediamine and accelerated using imidazole. Increased DOPO concentration improved fire retardancy, but reduced reactivity and thermal and mechanical properties. An increasing amino excess stoichiometry, however, comparatively increased reactivity and improved thermal and mechanical properties. Despite evidence of an earlier onset of degradation and higher char yield, enhanced graphitisation and reduced volatile emissions for the off‐stoichiometric networks, no significant improvements in fire resistance as a function of stoichiometry were observed using UL‐94 and limiting oxygen index measurements. © 2022 The Authors. Polymer International published by John Wiley & Sons Ltd on behalf of Society of Industrial Chemistry.
Improving mechanical properties and processability of a very high Tg epoxy amine network via anti‐plasticizer fortification
Publisher: Wiley
Date: 25-07-2022
DOI: 10.1002/APP.52854
Abstract: In this work, molecular fortifiers are added to a highly aromatic and rigid epoxy monomer bis(2,7 diglycidyl ether naphthalenediol) methane (NNE) possessing a very high glass transition temperature ( T g ) when cured with 4,4′‐diaminodiphenyl sulfone (DDS) to explore their impact upon mechanical and thermal properties and reactivity. The molecular fortifiers used are the nonfunctional naphthalene (NAPH), the reactive diluent o‐cresyl glycidyl ether (CGE) and an adduct of dihydroxy naphthalene and CGE (molecular fortifier naphthalene, MFN), a variant on the partially reacted substructures approach. The fortifiers are found to affect NNE/DDS reactivity and increase processability depending upon their propensity to attach to the network either through hydrogen bonding or pi‐pi electron interactions. Thermal analysis shows that the fortifiers increased cure conversion although the T g s of the networks were generally unaffected until higher levels of addition. The fortifiers reduce moisture ingress and suppress glassy state β relaxations while increasing modulus significantly. Although there is little improvement in toughness overall, some evidence for higher fracture toughness is observed for the MFN and NAPH modified networks. This work highlights the effectiveness of different molecular level fortifiers on improving properties, in particular the rigidity of highly crosslinked networks.
Facile one pot synthesis of strong epoxy/agar hybrid hydrogels
Publisher: Springer Science and Business Media LLC
Date: 12-2019
Toughening of a trifunctional epoxy system
Publisher: Elsevier BV
Date: 03-1995
Epoxy/Poly(ethylene‐co‐methacrylic acid) Blends as Thermally Activated Healing Agents in an Epoxy/Amine Network
Publisher: Wiley
Date: 18-08-2014
Morphology, thermal relaxations and mechanical properties of layered silicate nanocomposites based upon high-functionality epoxy resins
Publisher: Elsevier BV
Date: 07-2002
Adhesives performance of 3-layer PE pipe coatings: Effects of MAH loading, PE particles size, coating interval time and service temperature
Publisher: Elsevier BV
Date: 10-2016
Investigation of the Dual Polymerization of Rapid Curing Organophosphorous Modified Epoxy/Amine Resins and Subsequent Flame Retardancy
Publisher: Wiley
Date: 28-02-2021
Towards an understanding of thermally activated self-healing of an ionomer system during ballistic penetration
Publisher: Elsevier BV
Date: 11-2008
Ionomers as Self Healing Polymers
Publisher: Springer Netherlands
Date: 2007
Understanding the decomposition and fire performance processes in phosphorus and nanomodified high performance epoxy resins and composites
Publisher: Elsevier BV
Date: 04-2007
Layered Silicate Nanocomposites Based on Various High-Functionality Epoxy Resins: The Influence of Cure Temperature on Morphology, Mechanical Properties, and Free Volume
Publisher: American Chemical Society (ACS)
Date: 07-02-2003
DOI: 10.1021/MA0213448
Low-molecular-weight thermoplastic modifiers as effective healing agents in mendable epoxy networks
Publisher: SAGE Publications
Date: 23-10-2013
Abstract: Solid-state healing of epoxy networks is shown to be an effective and robust mechanism for highly cross-linked epoxy networks. Using diglycidyl ether of bisphenol A epoxy resin and diethyltoluenediamine, the cured epoxy network is transformed into a mendable system using phenoxy resin and low-molecular-weight polybisphenol A-co-epichlorohydrin) thermoplastic modifiers. Using functionally terminated low-molecular-weight poly(bisphenol A-co-epichlorohydrina) thermoplastic modifiers as healing agents reveals that salicylic acid or neutralized sodium salicylate groups produce healing similar to high-molecular-weight non-functional phenoxy resin as measured using single-end notched beam testing. The miscibility of both thermoplastics in the diglycidyl ether of bisphenol A/diethyltoluenediamine system was evaluated using differential scanning calorimetry and dynamic mechanical thermal analysis and identified as being important to promoting healing. Near-infrared spectroscopy showed that the network structure was unaffected by the thermoplastic modification, suggesting that healing occurred primarily through physical or non-covalent mechanisms rather than covalent bonding. The potential for self-assembly of the salicylic acid and neutralized sodium salicylate groups to form a high-molecular-weight thermoplastic in situ was also discussed as being a possible reason for the improved level of healing with the low-molecular-weight thermoplastic.
The effect of surface treatments on the mechanical properties of basalt‐reinforced epoxy composites
Publisher: Wiley
Date: 28-01-2013
DOI: 10.1002/PC.22412
Effect of aromatic substitution on the kinetics and properties of epoxy cured tri‐phenylether amines
Publisher: Wiley
Date: 11-01-2019
DOI: 10.1002/APP.47383
High Performance Carbon Fiber Structural Batteries Using Cellulose Nanocrystal Reinforced Polymer Electrolyte
Publisher: American Chemical Society (ACS)
Date: 30-09-2022
Abstract: In recent years, structural batteries have received great attention for future automotive application in which a load-bearing car panel is used as an energy storage. However, based on the current advances, achieving both high ionic conductivity and mechanical performance has remained a challenge. To address this challenge, this study introduces a cellulose nanocrystal (CNC) reinforced structural battery electrolyte (CSBE) consisting of CNC, triethylene glycol dimethyl ether (TriG) electrolyte containing a quasi-solid additive, e.g., cyclohexanedimethanol (CHDM), in a vinyl ester polymer. This green and renewable CSBE electrolyte system was
Double dynamic cellulose nanocomposite hydrogels with environmentally adaptive self-healing and pH-tuning properties
Publisher: Springer Science and Business Media LLC
Date: 05-12-2020
Development of non-combustible weaveable yarn through oxidative control of a textile acrylic fibre
Publisher: Elsevier BV
Date: 12-2023
Dynamic plant-derived polysaccharide-based hydrogels
Publisher: Elsevier BV
Date: 03-2020
DOI: 10.1016/J.CARBPOL.2019.115743
Abstract: Plant-derived polysaccharides are widely used to fabricate hydrogels because of their ease of gelation and functionalization, plus exceptional biological properties. As an ex le, nanocellulose is a suitable candidate to fabricate hydrogels for tissue engineering applications due to its enhanced mechanical and biological properties. However, hydrogels are prone to permanent failure whilst under load without the ability to reform their networks once damaged. Recently, considerable efforts are being made to fabricate dynamic hydrogels via installation of reversible crosslinks within their networks. In this paper, we review the developments in the design of dynamic hydrogels from plant-derived polysaccharides, and discuss their applications in tissue engineering, sensors, bioelectronics devices, etc. The main goal of the paper is to elucidate how the network design of hydrogels can influence their dynamic properties: self-healing and self-recovery. Complementary to this, current challenges and prospects of dynamic plant-derived hydrogels are discussed.
Self-healing of delamination fatigue cracks in carbon fibre-epoxy laminate using mendable thermoplastic
Publisher: Springer Science and Business Media LLC
Date: 17-02-2012
Effect of aromatic substitution on the cure reaction and network properties of anhydride cured triphenyl ether tetraglycidyl epoxy resins
Publisher: Wiley
Date: 26-03-2019
DOI: 10.1002/PAT.4584
Effect of mendable polymer stitch density on the toughening and healing of delamination cracks in carbon-epoxy laminates
Publisher: Elsevier BV
Date: 07-2013
Effect of reinforcing fibres on the morphology of a toughened epoxy/amine system
Publisher: Elsevier BV
Date: 03-1997
Effect of ionic content on ballistic self-healing in EMAA copolymers and ionomers
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3PY00095H
Nanocomposites based on a combination of epoxy resin, hyperbranched epoxy and a layered silicate
Publisher: Elsevier BV
Date: 11-2003
Thermal stability and water uptake of high performance epoxy layered silicate nanocomposites
Publisher: Elsevier BV
Date: 2004
Clay‐reinforced epoxy nanocomposites
Publisher: Wiley
Date: 04-08-2003
DOI: 10.1002/PI.1166
Toughening of epoxy resin systems using low‐viscosity additives
Publisher: Wiley
Date: 17-11-2003
DOI: 10.1002/PI.1321
Multiple Hydrogen Bond Channel Structural Electrolyte for an Enhanced Carbon Fiber Composite Battery
Publisher: American Chemical Society (ACS)
Date: 17-01-2022
Toughening of trifunctional epoxy using an epoxy‐functionalized hyperbranched polymer
Publisher: Wiley
Date: 12-06-2003
DOI: 10.1002/APP.12059
Toughening of an Epoxy Anhydride Resin System Using an Epoxidized Hyperbranched Polymer
Publisher: Wiley
Date: 22-11-2004
DOI: 10.1002/PI.1324
Effect of organo‐phosphorus and nano‐clay materials on the thermal and fire performance of epoxy resins
Publisher: Wiley
Date: 20-11-2003
DOI: 10.1002/APP.13267
Toughening epoxy resins with polyepichlorohydrin
Publisher: Wiley
Date: 15-05-1993
Healing of carbon fibre-epoxy composites using thermoplastic additives
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3PY00459G
EMAA as a healing agent for mendable high temperature epoxy amine thermosets
Publisher: Elsevier BV
Date: 07-2012
A review of future directions in the development of sustainable carbon fiber from bio-based precursors
Publisher: Elsevier BV
Date: 12-2022
Toughening of a carbon fibre reinforced epoxy anhydride composite using an epoxy terminated hyperbranched modifier
Publisher: Elsevier BV
Date: 11-2005
Studies on blends of epoxy-functionalized hyperbranched polymer and epoxy resin
Publisher: Springer Science and Business Media LLC
Date: 2003
Development and characterization of a fire retardant epoxy resin using an organo-phosphorus compound
Publisher: Springer Science and Business Media LLC
Date: 2003
Investigation of thermal and fire performance of novel hybrid geopplymer composites
Publisher: Springer Science and Business Media LLC
Date: 07-2004
Synthesis and characterisation of new sulphur containing epoxy networks
Publisher: SAGE Publications
Date: 23-01-2014
Abstract: The position of sulphur within a cured epoxy amine network and its impact upon the thermal, mechanical, chemical and physical properties has been investigated in this study. Sulphur-containing epoxy resins, diglycidyl thioether of bisphenol A (DGTEBA) and diglycidyl ether of dithio diphenyl (DGTED) have been synthesised, cured and characterised and then compared with the benchmark epoxy resin, diglycidyl ether of bisphenol A (DGEBA). DGTEBA has two sulphur atoms located terminally to the epoxide groups, whilst DGTED has a sulphur atom located centrally between two phenyl groups. Evaluation of the properties and cure mechanism using 4,4′-diamino diphenyl sulphone (4,4′-DDS) as the hardener showed that when the sulphur was terminally located, the glass transition temperature, cure conversion, thermal stability, yield strain and stress decrease substantially, whilst the rate of cure and methyl ethyl ketone (MEK) ingress was comparatively higher. Near-infrared spectroscopy revealed that a competing hydrogen abstraction reaction mechanism deactivated the epoxide ring to nucleophilic attack to produce a heterogeneous network and poorer properties. In contrast, the properties and network structure of the DGTED-cured network, which had sulphur placed centrally between the diphenyl groups were similar to DGEBA except that MEK fluid ingress was reduced. The DGTEBA epoxy was also cured with other amines of varying reactivity to reveal that the hydrogen abstraction mechanism was dependent upon the reactivity of the hardener. Less reactive hardeners were dominated by the hydrogen abstraction mechanism, whilst the more reactive amines displayed a step-growth mechanism more typically associated with epoxy amine cure.
An efficient healing agent for high temperature epoxy composites based upon tetra-glycidyl diamino diphenyl methane
Publisher: Elsevier BV
Date: 11-2015
Aromatic tetra-glycidyl ether versus tetra-glycidyl amine epoxy networks: Influence of monomer structure and epoxide conversion
Publisher: Elsevier BV
Date: 2022
Polymer Coatings for Oilfield Pipelines
Publisher: Springer Netherlands
Date: 2016
Toughening of a trifunctional epoxy system: IV. Dynamic mechanical relaxational study of the thermoplastic-modified cure process
Publisher: Wiley
Date: 15-01-1997
DOI: 10.1002/(SICI)1099-0488(19970115)35:1<153::AID-POLB13>3.0.CO;2-C
Synthesis of Tri‐Aryl Methane Epoxy Resin Isomers and Their Cure with Aromatic Amines
Publisher: Wiley
Date: 13-01-2020
Self-healing of delamination cracks in mendable epoxy matrix laminates using poly[ethylene-co-(methacrylic acid)] thermoplastic
Publisher: Elsevier BV
Date: 08-2012
Reaction Kinetics and Phase Transformations During Cure of a Thermoplastic‐Modified Epoxy Thermoset
Publisher: Wiley
Date: 05-01-2007
Effect of Ultrasonic Dispersion Methods on Thermal and Mechanical Properties of Organoclay Epoxy Nanocomposites
Publisher: Wiley
Date: 11-04-2007
Synthesis of tri‐aryl ether epoxy resin isomers and their cure with diamino diphenyl sulphone
Publisher: Wiley
Date: 20-04-2020
DOI: 10.1002/POL.20200051
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