ORCID Profile
0000-0002-8976-8651
Current Organisations
Saline Water Conversion Corporation
,
University of New England
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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)
Synthesis Of Macromolecules | Characterisation Of Macromolecules | Macromolecular and Materials Chemistry | Simulation And Modelling | Medicinal and Biomolecular Chemistry | Environmental Science and Management | Colloid And Surface Chemistry | Immunological And Bioassay Methods | Polymerisation Mechanisms | Nanochemistry and Supramolecular Chemistry | Biologically Active Molecules | Chemical Characterisation of Materials | Physical Chemistry (Incl. Structural) | Polymers | Chemical Engineering Not Elsewhere Classified | Environmental Impact Assessment | Materials Engineering | Environmental Sciences Not Elsewhere Classified |
ANZSRC Socio-Economic Objective (SEO)
Plastics in primary forms | Synthetic resins and rubber | Printing and publishing processes | Plastic products (incl. Construction materials) | Sugar | Rice | Industry | Environmental and resource evaluation not elsewhere classified | Land and water management | Polymeric materials (e.g. paints) | Expanding Knowledge in the Chemical Sciences | Environmental health | Expanding Knowledge in the Biological Sciences | Diagnostics
Related Links
Publications
Impact of wheat bran particle size on the technological and phytochemical properties of durum wheat pasta
Publisher: Elsevier BV
Date: 09-2020
Rational design of polymer colloids
Publisher: Wiley
Date: 09-2001
DOI: 10.1002/1521-3900(200109)174:1<13::AID-MASY13>3.0.CO;2-Z
Optimisation of resistant starch II and III levels in durum wheat pasta to reduce in vitro digestibility while maintaining processing and sensory characteristics
Publisher: Elsevier BV
Date: 2013
DOI: 10.1016/J.FOODCHEM.2012.08.035
Abstract: Foods with elevated levels of resistant starch (RS) may have beneficial effects on human health. Pasta was enriched with commercial resistant starches (RSII, Hi Maize™ 1043 RSIII, Novelose 330™) at 10%, 20% and 50% substitution of semolina for RSII and 10% and 20% for RSIII and compared with pasta made from 100% durum wheat semolina to investigate technological, sensory, in vitro starch digestibility and structural properties. The resultant RS content of pasta increased from 1.9% to ∼21% and was not reduced on cooking. Significantly, the results indicate that 10% and 20% RSII and RSIII substitution of semolina had no significant effects on pasta cooking loss, texture and sensory properties, with only a minimal reduction in pasta yellowness. Both RS types lowered the extent of in vitro starch hydrolysis compared to that of control pasta. X-ray diffraction and small-angle scattering verified the incorporation of RS and, compared to the control s le, identified enhanced crystallinity and a changed molecular arrangement following digestion. These results can be contrasted with the negative impact on pasta resulting from substitution with equivalent amounts of more traditional dietary fibre such as bran. The study suggests that these RS-containing formulations may be ideal sources for the preparation of pasta with reduced starch digestibility.
Terminology for chain polymerization (IUPAC Recommendations 2021)
Publisher: Walter de Gruyter GmbH
Date: 09-2022
Abstract: Chain polymerizations are defined as chain reactions where the propagation steps occur by reaction between monomer(s) and active site(s) on the polymer chains with regeneration of the active site(s) at each step. Many forms of chain polymerization can be distinguished according to the mechanism of the propagation step (e.g., cyclopolymerization – when rings are formed, condensative chain polymerization – when propagation is a condensation reaction, group-transfer polymerization, polyinsertion, ring-opening polymerization – when rings are opened), whether they involve a termination step or not (e.g., living polymerization – when termination is absent, reversible-deactivation polymerization), whether a transfer step is involved (e.g., degenerative-transfer polymerization), and the type of chain carrier or active site (e.g., radical, ion, electrophile, nucleophile, coordination complex). The objective of this document is to provide a language for describing chain polymerizations that is both readily understandable and self-consistent, and which covers recent developments in this rapidly evolving field.
Inhibition of Homogeneous Formation of Magnesium Hydroxide by Low-Molar-Mass Poly(acrylic acid) with Different End-Groups
Publisher: American Chemical Society (ACS)
Date: 17-02-2015
DOI: 10.1021/IE504869E
Understanding and improving direct UV detection of monosaccharides and disaccharides in free solution capillary electrophoresis
Publisher: Elsevier BV
Date: 2014
DOI: 10.1016/J.ACA.2013.12.001
Abstract: Direct UV detection of carbohydrates in free solution capillary electrophoresis at 270 nm is made possible by a photo-oxidation reaction. Glucose, rhamnose and xylose were shown to have unique UV absorption spectra hypothesizing different UV absorbing intermediates for their respective photo-oxidation. NMR spectroscopy of the photo-oxidation end products proved they consisted of carboxylates and not malondialdehyde as previously theorized and that oxygen thus plays a key role in the photo-oxidation pathway. Adding the photo-initiator Irgacure(®) 2959 in the background electrolyte increased sensitivity by 40% at an optimum concentration of 1×10(-4) mM and 1×10(-8) mM for conventional 50 μm i.d. capillaries and for the corresponding extended light path capillaries, respectively.
Insights into bridging flocculation
Publisher: Wiley
Date: 12-2005
Kinetics of surface grafting on polyisoprene latexes by reaction calorimetry
Publisher: Elsevier BV
Date: 08-2004
A method for preparing low-allergen natural rubber latex
Publisher: CSIRO Publishing
Date: 2005
DOI: 10.1071/CH05060
Abstract: The free radical polymerization of dimethylaminoethyl methacrylate (DMAEMA) on the surface of particles in natural rubber latex (NRL) was carried out using an iron(ii)/tetraethylenepentamine (TEPA) redox couple initiation system, which results in significant grafting of poly(DMAEMA) to the surface of the particles. Because poly(DMAEMA) functions as an electrosteric stabilizer, this leads to increased colloidal stability, which suggests that the proteinaceous material which normally provides the colloidal stability in NRL can be displaced. This opens the way to preparing barrier products of low allergenicity, because the allergic response from NRL products arises from this proteinaceous material. Dipped and cast films were prepared from the modified NRL and were shown to be of low allergenicity using the IgE-ELISA inhibition assay. Vulcanized films prepared from the modified latex were also found to be of low allergenicity compared to a compounded film of unmodified NRL prepared under similar conditions. The barrier integrity, tensile strength, and elongation at break values of vulcanized films prepared from the modified latex were also equivalent to the unmodified film, and their water sensitivity and ageing characteristics were not significantly different. This suggests that this modified NRL can be used as an effective low-allergy latex for personal barrier products such as surgical gloves.
Quality of fiber-enriched spaghetti containing microbial transglutaminase
Publisher: Wiley
Date: 2010
Pulsed-laser polymerization-gel permeation chromatographic determination of the propagation-rate coefficient for the methyl acrylate dimer: A sterically hindered monomer
Publisher: Wiley
Date: 02-10-2001
DOI: 10.1002/POLA.10034
Understanding membrane selectivity in pervaporation of water‐rich water:ethanol mixtures
Publisher: Wiley
Date: 18-01-2018
DOI: 10.1002/CJCE.23110
The role of the viscous sublayer in calcium carbonate dissolution
Publisher: Desalination Publications
Date: 2020
Definitions and notations relating to tactic polymers (IUPAC Recommendations 2020)
Publisher: Walter de Gruyter GmbH
Date: 02-10-2020
Abstract: This document summarizes and extends definitions and notations for the description of tactic polymers and the diad structures of which they are composed. It formally recognizes and resolves apparent inconsistencies between terminology used in the polymer field to describe tactic polymers and terminology in more common use in organic chemistry. Specifically, the terms m and r diads are recommended to replace the terms meso and racemo diads. The definitions are also updated from those in the existing Stereochemistry Document to use the term ‘stereogenic centre’, rather than ‘chiral or prochiral atoms’. Further, the terms relating to tacticity have been defined for the constituent macromolecules, rather than for the polymers composed of those macromolecules. Therefore, this document also forms an addendum and corrigendum to the 1981 document, ‘Stereochemical definitions and notations relating to polymers’.
Preliminary observations on the copolymerisation of acceptor monomer: Donor monomer systems under microwave irradiation
Publisher: Walter de Gruyter GmbH
Date: 03-2005
DOI: 10.2478/BF02476236
Abstract: The mechanistic rationalisation of specific ‘microwave effects’ previously reported in a range of chemical reactions suggests that they may be observable in the freeradical copolymerisation of comonomer pairs capable of forming donor-acceptor complexes. Polymerisation under microwave irradiation is carried out for several comonomer pairs with weak donor-acceptor interactions, and no acceleration in rate or change in degree of alternation attributable to changes in propagation are observed. An increase in reaction rate of 150–200 % is observed for all systems, with trends in molecular weight suggesting this was due to an increase in radical flux. This is consistent with earlier reports of rate enhancement for free-radical polymerisations using the initiator 2,2′-azobis-isobutyronitrile, and it is proposed that microwave irradiation may reduce the amount of geminate radical recombination.
Analysis of carbonate and hydrogen carbonate in seawater and brines
Publisher: Desalination Publications
Date: 2021
The interactions of amphiphilic latexes with surfaces: the effect of surface modifications and ionic strength
Publisher: Elsevier BV
Date: 05-2002
Model discrimination of radical desorption kinetics in emulsion polymerisation
Publisher: Wiley
Date: 28-06-2011
3D Printing of Customized Drug Delivery Systems with Controlled Architecture via Reversible Addition‐Fragmentation Chain Transfer Polymerization
Publisher: Wiley
Date: 18-01-2023
Abstract: 3D printing via reversible addition‐fragmentation chain transfer (RAFT) polymerization has been recently developed to expand the scope of 3D printing technologies. A potentially high‐impact but relatively unexplored opportunity that can be provided by RAFT‐mediated 3D printing is a pathway toward personalized medicine through manufacturing bespoke drug delivery systems (DDSs). Herein, 3D printing of drug‐eluting systems with precise geometry, size, drug dosage, and release duration rofiles is reported. This is achieved through engineering a range of 3D models with precise interconnected channel‐pore structure and geometric proportions in architectural patterns. Notably, the application of the RAFT process is crucial in manufacturing materials with highly resolved macroscale features by confining curing to exposure precincts. This approach also allows spatiotemporal control of the drug loading and compositions within different layers of the scaffolds. The ratio between the polyethylene glycol units and the acrylate units in the crosslinkers is found to be a critical factor, with a higher ratio increasing swelling capacity, and thus enhancing the drug release profile, from the drug‐eluting systems. This proof‐of‐concept research demonstrates that RAFT‐mediated 3D printing enables the production of personalized drug delivery materials, providing a pathway to replace the “one‐size‐fits‐all” approach in traditional health care.
Understanding the role of monolayers in retarding evaporation from water storage bodies
Publisher: Elsevier BV
Date: 03-2015
Determination of bound and unbound water in dental alginate irreversible hydrocolloid by nuclear magnetic resonance spectroscopy
Publisher: Elsevier BV
Date: 04-2009
DOI: 10.1016/J.DENTAL.2008.10.001
Abstract: Alginate materials are considered unsuitable for precise fixed prosthetic rehabilitation due to their tendency to undergo spontaneous syneresis. Commercial alginate impression materials were investigated using Nuclear Magnetic Resonance (NMR) Spectroscopy to probe the relation between changes in the microscopic water environment and dimensional change to obtain a better understanding of spontaneous syneresis. NMR was used to measure the spin-lattice relaxation times (T(1)) of (1)H nuclei in water in alginate matrices to characterize changes in gel structure over time. These results were related to the dimensional stabilities of the alginate impression materials, their chemical compositions, and the Moisture Sorption Isotherms (MSI) obtained by incubation at fixed relative humidities. The rate of change of T(1) with time was found to be a better predictor of dimensional stability than MSI. The greatest dimensional stability for the alginate powders investigated was associated with a high filler:alginate ratio and a high Ca:Na ratio. Nuclear magnetic resonance spectroscopy may used to measure changes in alginate impression materials under conditions where no dimensional change can be observed directly. Changes occurred rapidly even at 100% humidity, suggesting the dimensional stability of alginate impression materials is partially independent of the rate of dehydration. The results may open a way to formulate alginate impression materials more suitable for precise fabrication of dental prostheses.
Flocculation and sedimentation of cane sugar juice particles with cationic homo- and copolymers
Publisher: Wiley
Date: 25-07-2003
DOI: 10.1002/APP.12791
Deposition of hydroxyapatite and calcium oxalate dihydrate on a heat exchanger tube
Publisher: Wiley
Date: 11-2011
DOI: 10.1002/APJ.487
Nutritional and functional properties of durum wheat bran protein concentrate
Publisher: Wiley
Date: 21-12-2020
DOI: 10.1002/CCHE.10246
Relative reactivity of chloroprene and methyl methacrylate toward initiator radicals
Publisher: Elsevier BV
Date: 07-2003
Evaluation of the technological and sensory properties of durum wheat spaghetti enriched with different dietary fibres
Publisher: Wiley
Date: 28-05-2014
DOI: 10.1002/JSFA.6723
Abstract: The incorporation of fibres, whether insoluble or soluble, in durum wheat pasta negatively impacts desirable end-use properties, especially if incorporated in significant amounts. Fibres can disrupt the starch-protein matrix of the dough during pasta preparation and can also often swell more readily with water than starch, competing with the starch for water during dough development. Similar degrees of substitution with different fibres gave markedly different impacts on firmness, stickiness, cooking loss and sensory attributes, suggesting that results obtained for one fibre cannot readily be generalized to other fibres. The in vitro starch digestibility of the pastas was significantly reduced when resistant starch, β-glucan-enriched flour, carboxymethyl cellulose or guar gum was incorporated but increased when pollard or inulin was added. In many instances, different sources of the same fibre gave dramatically different impacts on the properties of cooked durum wheat pasta.
Modification of Natural and Artificial Polymer Colloids by “Topology-Controlled” Emulsion Polymerization
Publisher: American Chemical Society (ACS)
Date: 27-04-2001
DOI: 10.1021/BM005654E
Abstract: A diffuse layer of water-soluble polymer chemically grafted to the surface of a hydrophobic polymer colloid has been created by the second-stage polymerization of dimethylaminoethyl methacrylate (DMAEMA) onto the biomacromolecule polyisoprene in natural rubber latex and also onto synthetic polybutadiene and polystyrene latexes. To control the locus of radical formation, the process was initiated by a redox couple wherein one component (e.g., cumene hydroperoxide) is hydrophobic and the other (e.g., tetraethylenepentamine) is hydrophilic. The modified latexes displayed a dramatic increase in colloidal stability at low pH which is attributed to grafted hydrophilic polymer acting as an electrosteric stabilizer the effect is particularly remarkable in natural rubber latex, which usually has poor colloidal stability for pH less, similar 8. (13)C NMR was performed to verify the existence of the grafted copolymer and to quantify yield. The mechanism by which such a novel morphology can be generated is postulated to be via a process of radical formation at the particle surface followed by the subsequent grafting to the hydrophobic polymer backbone and polymerization of hydrophilic monomer in the aqueous phase. This technique is potentially useful for creating novel materials from natural rubber latex.
Sensory, Technological, and Health Aspects of Adding Fiber to Wheat-Based Pasta
Publisher: Elsevier
Date: 2014
Water sensitivity of latex-based films
Publisher: American Chemical Society (ACS)
Date: 20-12-2003
DOI: 10.1021/IE020611V
Effect of branching and molecular weight on the viscoelastic properties of poly(butyl acrylate)
Publisher: Wiley
Date: 28-08-2002
DOI: 10.1002/POLA.10424
A comparative study of novel scale inhibitors with commercial scale inhibitors used in seawater desalination
Publisher: Elsevier BV
Date: 03-2015
Synthesis and cross-linking of polyisoprene latexes
Publisher: Elsevier BV
Date: 02-2004
Modification of the resistance of two epoxy resins to accelerated weathering using calcium sulfate as a photostabilizer
Publisher: Informa UK Limited
Date: 03-2019
ATR-FTIR measurement of biomass components in phosphonium ionic liquids
Publisher: Informa UK Limited
Date: 07-2012
Reversible-Deactivation Radical Polymerisation: chain polymerisation made simple
Publisher: Walter de Gruyter GmbH
Date: 10-02-2021
Abstract: Reversible-Deactivation Radical Polymerisation (RDRP) is one of the most exciting developments in chemistry over the past few decades, but it is rarely mentioned when polymerisation mechanisms are introduced in the final years of secondary education or first years of tertiary education. We propose that this is unfortunate, as RDRP is simpler than conventional Radical Polymerisation both conceptually and in terms of setting quantitative problems, and that it illustrates several other important features of chemistry as a human endeavour: How essential mechanistic unities are hidden by the details of how we write a chemical reaction, how a ‘bug’ in one stage of development of a process can become a ‘feature’ in a later stage, and how exciting changes can occur quite suddenly in fields thought to be mature and uninteresting.
A comparative study of accelerated weathering of epoxy resins based on DGEBA and HDGEBA
Publisher: Springer Science and Business Media LLC
Date: 26-03-2018
Effect of surfactant systems on the water sensitivity of latex films
Publisher: Wiley
Date: 02-03-2004
DOI: 10.1002/APP.20150
Effect of β‐Glucan on Technological, Sensory, and Structural Properties of Durum Wheat Pasta
Publisher: Wiley
Date: 03-2012
Effect of ethyl aluminium sesquichloride on the relative reactivity of methyl methacrylate and buta-1,3-dienes towards initiator radicals
Publisher: Elsevier BV
Date: 06-2001
AACCI Approved Methods Technical Committee Report: Collaborative Study on the Cooking Time and Firmness of Spaghetti (Methods Report 66-51.01 and 66-52.01)
Publisher: Scientific Societies
Date: 2019
Aspects of the kinetics and solubility of silica and calcium oxalate composites in sugar solutions
Publisher: Elsevier BV
Date: 08-2013
Detecting and Monitoring Industrial Scale Formation Using an Intrinsic Exposed-Core Optical Fiber Sensor
Publisher: American Chemical Society (ACS)
Date: 13-04-2010
DOI: 10.1021/IE901471P
Methodologies for symmetrical-flow field-flow fractionation analyses of polymeric glutenin
Publisher: Wiley
Date: 04-2007
Grafting of dodecyl methacrylate onto hydroxylated polybutadiene by miniemulsion polymerization
Publisher: Wiley
Date: 06-2004
DOI: 10.1002/POLA.20131
Evaluation of bisphenol A-based epoxy resin containing multiwalled carbon nanotubes to improve resistance to degradation
Publisher: SAGE Publications
Date: 03-12-2018
Abstract: The influence of exposure to UV light and moisture on the durability of a multiwalled carbon nanotube(MWCNT)/epoxy nanocomposite was investigated. S les of epoxy resin based on diglycidyl ether of bisphenol A (DGEBA) cured with 2,2,4-trimethylene-1,6-hexadiamine (TMDA), and epoxy nanocomposite containing 0.5% MWCNT were exposed to different accelerated weathering times between one and six months. Changes in surface chemistry, mechanical properties (tensile tests), thermal properties (thermogravimetric analysis and differential scanning calorimetry), and morphology were evaluated before and after exposure to accelerated weathering for a period of up to six months. Epoxy nanocomposite (DGEBA–TMDA/0.5%MWCNT) s les had improved thermal stability and resistance to degradation, compared to epoxy resin (DGEBA–TMDA). The effect of MWCNT at reducing degradation was more pronounced than previously found for resins prepared with hydrogenated DGEBA.
Film-forming amine product as an alternative to carbohydrazide oxygen scavenger in high pressure boilers
Publisher: Elsevier BV
Date: 06-2023
Can variation in durum wheat pasta protein and starch composition affect in vitro starch hydrolysis?
Publisher: Elsevier BV
Date: 02-2011
A critical evaluation of reaction calorimetry for the study of emulsion polymerization systems: thermodynamic and kinetic aspects
Publisher: Elsevier BV
Date: 2005
Cryo-sectioning and chemical-fixing ultramicrotomy techniques for imaging rubber latex particle morphology
Publisher: Wiley
Date: 2004
DOI: 10.1002/JEMT.20018
Abstract: Two methods adapted from biological microscopy are described for a new application in imaging the morphology of rubbery latex particles. In the first method, a drop of latex is frozen in liquid nitrogen, sectioned with a diamond knife and vapour-stained with osmium tetroxide, then viewed by transmission electron microscopy. When applied to latexes made by emulsion polymerization of methyl methacrylate in a natural rubber latex seed, inclusions are clearly visible. A chemical fixation method is then described for imaging the morphology of such rubbery latex particles. Glutaraldehyde is added to the latex, followed by osmium tetroxide. The s le is then dehydrated in ethanol, epoxy resin added, and the s le cured, ultramicrotomed, and imaged with transmission electron microscopy. An inclusion morphology is again clearly seen.
Ab initio RAFT emulsion polymerization mediated by small cationic RAFT agents to form polymers with low molar mass dispersity
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9PY00893D
Abstract: We report on low molar mass cationic RAFT agents that provide predictable molar mass and low molar mass dispersities ( Đ m ) in ab initio emulsion polymerization.
Effect of the Z‐ and Macro‐R‐Group on the Thermal Desulfurization of Polymers Synthesized with Acid/Base “Switchable” Dithiocarbamate RAFT Agents
Publisher: Wiley
Date: 11-05-2018
Abstract: Thermolysis is examined as a method for complete desulfurization of reversible addition-fragmentation chain transfer (RAFT)-synthesized polymers prepared with acid/base "switchable" N-methyl-N-pyridyldithiocarbamates [RS
The effect of Z-group modification on the RAFT polymerization of N-vinylpyrrolidone mediated by switchable N-pyridyl-functional dithiocarbamates
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5PY01021G
Abstract: The polymerization of N -vinylpyrrolidone was examined with a series of cyanomethyl N -aryl- N -pyridyldithiocarbamates varying in the substituent at the 4-position on the phenyl ring.
Highly efficient removal of antimonite (Sb (III)) from aqueous solutions by organoclay and organozeolite: Kinetics and Isotherms
Publisher: Elsevier BV
Date: 03-2021
Maximum Achievable Particle Size in Emulsion Polymerization: Modeling of Large Particle Sizes
Publisher: Wiley
Date: 2002
DOI: 10.1002/1521-3919(20020201)11:2<163::AID-MATS163>3.0.CO;2-6
Value-adding to cellulosic ethanol: Lignin polymers
Publisher: Elsevier BV
Date: 03-2011
Physical separation techniques in water purification: an inquiry-based laboratory learning experience
Publisher: Walter de Gruyter GmbH
Date: 17-07-2019
Abstract: This article outlines a structured investigative activity for students in lower secondary school. It was developed for the Australian Mathematics and Science Partnership Programme, a government initiative intended to promote the employment of more hands-on investigations in secondary science within Australian schools. The investigation focuses on water purification and is intended to develop conceptual knowledge of this topic and also high-level skills such as experimental design, particularly in relation to identifying and controlling variables. The investigation is outlined in detail and was trialed with practicing science teachers, school students and preservice secondary teachers. All of these groups provided feedback in various forms that indicated the investigation was valuable, relevant, interesting and allowed students to take some responsibility for their own inquiry learning.
Bioavailability of Arsenic and Antimony in Terrestrial Ecosystems: A Review
Publisher: Elsevier BV
Date: 12-2019
Assessment of an Intrinsic Optical Fiber Sensor for in Situ Monitoring of Scale-Forming Salts
Publisher: American Chemical Society (ACS)
Date: 15-01-2008
DOI: 10.1021/IE070872A
In Situ Modification of Polyisoprene by Organo-Nanoclay during Emulsion Polymerization for Reinforcing Natural Rubber Thin Films
Publisher: MDPI AG
Date: 12-08-2019
Abstract: Nanoclay-modified polyisoprene latexes were prepared and then used as a reinforcing component in natural rubber (NR) thin films. Starve-fed emulsion (SFE) polymerization gives a higher conversion than the batch emulsion (BE), while the gel and coagulation contents from both systems are comparable. This is attributed to the SFE that provides a smaller average polymer particle size which in turn results in a greater polymerization locus, promoting the reaction rate. The addition of organo-nanoclay during synthesizing polyisoprene significantly lessens the polymerization efficiency because the nanoclay has a potential to suppress nucleation process of the reaction. It also intervenes the stabilizing efficiency of the surfactant—SDS or sodium dodecyl sulfate, giving enlarged average sizes of the polymer particles suspended in the latexes. TEM images show that nanoclay particles are attached on and/or inserted in the polymer particles. XRD and thermal (differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA)) analyses were employed to assess the d-spacing of nanoclay structure in NR nanocomposite films, respectively. Based on the overall results, 5 wt% of nanoclay relative to the monomer content utilized to alter the polyisoprene during emulsion polymerization is an optimum amount since the silicate plates of nanoclay in the composite exhibit the largest d-spacing which maximizes the extent of immobilized polymer constituent, giving the highest mechanical properties to the films. The excessive amounts of nanoclay used, i.e., 7 and 10 wt% relative to the monomer content, reduce the reinforcing power because of the re-agglomeration effect.
Synthesis and structure-property relations of latexes containing graft copolymers between telechelic polybutadiene and dodecyl methacrylate
Publisher: CSIRO Publishing
Date: 2004
DOI: 10.1071/CH04030
Abstract: Latexes comprising novel copolymers were formed by second-stage emulsion polymerization of dodecyl methacrylate (DMA) onto a hydroxylated polybutadiene-based polyurethane prepolymer (PUD) as seed latex, with persulfate initiator. Morphology data from TEM imaging (including chemical fixation ultra-microtoming), glass transition temperature, dynamic mechanical analysis, and other mechanical-property data were all consistent with a system showing extensive grafting and compatibilization between the different polymeric components. Water adsorption and AFM measurements showed that s les with poorer film-forming properties had higher water sensitivity, greater mixing of the polymer phases, and poorer mechanical properties. These properties were related to a phase-inversion phenomenon occurring above a critical dodecyl methacrylate repolymer ratio. The compatibilization of the PUD and poly(DMA) given by these modifications resulted in a product with increased tackiness, although with a higher water sensitivity.
Inhibition of Calcium Phosphate by Phosphonates: The Effect of Triazinetriphosphonic Acid
Publisher: CRC Press
Date: 26-10-2013
DOI: 10.1201/B15606-11
Modeling the co-precipitation of silica and calcium oxalate in sugar solutions
Publisher: Elsevier BV
Date: 2014
Evolution of mobile phases in cometary interiors
Publisher: Cambridge University Press (CUP)
Date: 2020
DOI: 10.1017/PASA.2019.46
Abstract: Beginning with loose aggregations of dust particles coated with heterogeneous ices under vacuum at Kuiper Belt temperatures, moving to Jupiter/Saturn distances and eventually to low-perihelion orbit, we consider the likely development of the gaseous phase within a cometary nucleus over the course of its lifetime. From the perspective of physical chemistry, we consider limits on the spatial and temporal distribution and composition of this gaseous phase. The implications of the gaseous phase for heat transfer and for the possible spatial and temporal development of liquid phases are calculated. We conclude that the likely temperatures, pressures, and compositions beneath the outer crust of typical cometary nuclei are such that fluidised phases can exist at significant depths and that these reservoirs give a coherent explanation for the high-intensity outbursts observed from cometary nuclei at large distances from perihelion.
Hydroamidation of alkenes with 'N'-substituted formamides
Publisher: CSIRO Publishing
Date: 2006
DOI: 10.1071/CH06010
Abstract: Hydroamidation of olefins with N-substituted formamides is performed with dodecacarbonyltriruthenium (Ru3(CO)12) at 180°C under N2 or CO atmosphere in toluene and in a series of ionic liquids. Yields of 99% with 94–97% exo selectivity are found in the addition of N-methylformamide to 2-norbornene under CO both in toluene and in the ionic liquid 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide [bmim][NTf2]. The presence of CO or a phosphine is necessary for significant reaction to occur, with CO more effective than triphenylphosphine in all ionic liquids investigated. Reasonable yields are achieved at low pressures, in contrast to most reported hydroamidations. Conversion, exo-selectivity, and selectivity fall with increasing steric bulk of the N-formamide substituent, and disubstituted formamides are inactive. Of the terminal alkenes investigated, only styrene can be hydroamidated.
Synthesis of Polyisoprene via Miniemulsion Polymerisation: Effect on Thermal Behaviour, Colloidal Properties and Stereochemistry
Publisher: Springer Science and Business Media LLC
Date: 12-2018
DOI: 10.1007/BF03449173
The Contribution of IUPAC to Polymer Science Education
Publisher: American Chemical Society (ACS)
Date: 19-07-2017
Seawater desalination concentrate—a new frontier for sustainable mining of valuable minerals
Publisher: Springer Science and Business Media LLC
Date: 25-03-2022
DOI: 10.1038/S41545-022-00153-6
Abstract: The ocean has often been announced as a sustainable source of important materials for civilization. Application of the same extraction processes to desalination concentrate, rather than to unconcentrated seawater, will necessarily be more energetically favorable, so the expansion of seawater desalination in recent decades brings this dream closer to reality. However, there is relatively little concrete commercial development of ‘concentrate mining’. This review assesses the technical and economic prospects for utilization of commercially viable products from seawater. The most important technologies for economic use of products from desalination plant concentrate are technologies for more economic separation and technologies for more economic concentration. The most promising separation technologies are those, such as nanofiltration, which separate brine into streams enriched/depleted in entire classes of constituents with minimal input of energy and reagents. Concentration is becoming more economic due to rapid advances in Osmotically-Assisted RO technology. Despite very active research on many aspects of desalination concentrate utilization, it is likely that commercial development of the non-NaCl components of desalination brine will depend on the available market for NaCl, as the challenges and costs of extracting the other mineral components from bitterns in which they are highly enriched are so much less than those faced in direct treatment of brines.
Synthesis of comblike poly(butyl methacrylate) using reversible addition-fragmentation chain transfer and an activated ester
Publisher: American Chemical Society (ACS)
Date: 04-03-2004
DOI: 10.1021/MA035302A
Derivation methods of soils, water and sediments toxicity guidelines: A brief review with a focus on antimony
Publisher: Elsevier BV
Date: 10-2019
Inhibition of calcium oxalate monohydrate by poly(acrylic acid)s with different end groups
Publisher: Wiley
Date: 10-12-2004
DOI: 10.1002/APP.13349
Effect of poly(acrylic acid) end-group functionality on inhibition of calcium oxalate crystal growth
Publisher: Wiley
Date: 17-12-2010
DOI: 10.1002/APP.31657
Degree of branching in poly(acrylic acid) prepared by controlled and conventional radical polymerization
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C8PY01762J
Abstract: Poly(acrylic acid)s, PAAs and poly(sodium acrylate)s, PNaAs were characterized in detail.
Pressure-varying Langmuir parameters and stepped nitrogen adsorption on alumina and silica
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C8CP06163G
Abstract: Nitrogen cross-sectional areas of complete monolayers and multilayers calculated from pressure-varying, Langmuir maximum adsorption capacities for adsorption on macroporous silica.
Water-Binding and Oxygen Permeability in Poly(vinyl alcohol) Films
Publisher: CSIRO Publishing
Date: 2002
DOI: 10.1071/CH02007
Abstract: The measurement and interpretation of isotherms for sorption of water onto, and oxygen permeability of, polymer substrates are important for designing polymers in applications such as agricultural seed coatings. In a preliminary study of water sorption in the commonly used copolymer poly(vinyl alcohol–co-vinyl acetate), moisture sorption isotherms were measured for a series of substrates of different comonomer composition at 25°C. The data were fitted to the D'Arcy–Watt model, which gave physically reasonable values for parameters related to the strength of monolayer adsorption to high affinity sites on the substrate and the number of sites for secondary water adsorption per unit mass. The oxygen permeability of poly(vinyl alcohol) films was found to be a function only of the water content of the films, with no other obvious contributing factors. Marked differences were seen in the populations of 'bound' and 'unbound' water characterized by 1H nuclear magnetic resonance (NMR) spectroscopy and moisture sorption isotherm fitting. There was no correlation of oxygen permeability with 'bound' or 'unbound' water measured by any means, a fact suggesting that there is a continuum of water environments within the materials.
Potential of desalination for lithium production in the Kingdom of Saudi Arabia
Publisher: Desalination Publications
Date: 2022
Characterization of sugar juice heat exchanger tube deposit
Publisher: Wiley
Date: 23-10-2011
DOI: 10.1002/SIA.3704
Measurement of Transfer Coefficients to Monomer for n‐Butyl Methacrylate by Molecular Weight Distributions from Emulsion Polymerization
Publisher: Wiley
Date: 30-07-2008
Lignocellulosics as a renewable feedstock for chemical industry: Chemicals from lignin
Publisher: Wiley
Date: 12-12-2012
Effect of inulin soluble dietary fibre addition on technological, sensory, and structural properties of durum wheat spaghetti
Publisher: Elsevier BV
Date: 05-2012
Lignocellulosics as a Renewable Feedstock for Chemical Industry: Chemical Hydrolysis and Pretreatment Processes
Publisher: Wiley
Date: 12-12-2012
Evaluation of the performance of microcrystalline cellulose in retarding degradation of two epoxy resin systems
Publisher: Informa UK Limited
Date: 22-01-2019
Reconsidering terms for mechanisms of polymer growth: the “step-growth” and “chain-growth” dilemma
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2PY00086E
Abstract: Terms used for mechanisms of polymer growth are varied and problematic we detail here our concerns with the terms “step-growth” and “chain-growth.” Ultimately, we seek terms that are simple, accurate, and attractive to the polymer community.
Study of rice-starch structure by dynamic light scattering in aqueous solution
Publisher: Elsevier BV
Date: 04-07-2005
Inhibition by poly(acrylic acid) and morphological changes in calcium carbonate and calcium carbonate/calcium sulfate crystallization on silica fibers
Publisher: American Chemical Society (ACS)
Date: 14-05-2014
DOI: 10.1021/IE500911G
Radical entry mechanisms in redox-initiated emulsion polymerizations
Publisher: Elsevier BV
Date: 09-2005
Effects of accelerated weathering on the chemical, mechanical, thermal and morphological properties of an epoxy/multi-walled carbon nanotube composite
Publisher: Elsevier BV
Date: 04-2018
Structure–property relationships in modified natural rubber latexes grafted with methyl methacrylate and vinyl neo‐decanoate
Publisher: Wiley
Date: 05-02-2002
DOI: 10.1002/POLA.10165
Effect of soluble fibre (guar gum and carboxymethylcellulose) addition on technological, sensory and structural properties of durum wheat spaghetti
Publisher: Elsevier BV
Date: 04-2012
Polymer Education in Australia
Publisher: Wiley
Date: 09-2015
Suppression of T-cell lymphomagenesis in mice requires PTEN phosphatase activity
Publisher: American Society of Hematology
Date: 29-01-2015
DOI: 10.1182/BLOOD-2014-04-571372
Abstract: PTEN phosphatase activity, independent of other PTEN functions, is required to prevent T-cell lymphoma.
Effect of poly(acrylic acid) molecular mass and end-group functionality on calcium oxalate crystal morphology and growth
Publisher: Wiley
Date: 07-10-2010
DOI: 10.1002/APP.31342
Effect of surfactants used for binder synthesis on the properties of latex paints
Publisher: Elsevier BV
Date: 06-2005
Effect of insoluble dietary fibre addition on technological, sensory, and structural properties of durum wheat spaghetti
Publisher: Elsevier BV
Date: 2012
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