ORCID Profile
0000-0003-3149-4464
Current Organisation
University of New South Wales
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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)
Macromolecular and Materials Chemistry | Synthesis of Materials | Colloid and Surface Chemistry | Polymerisation Mechanisms | Nanomaterials | Nanomedicine | Nanotechnology | Materials engineering | Polymerisation mechanisms | Synthesis Of Macromolecules | Condensed Matter Physics | Colloid And Surface Chemistry | Polymerisation Mechanisms | Polymers and plastics | Nanoscale Characterisation | Surfaces and Structural Properties of Condensed Matter | Nanobiotechnology | Condensed Matter Characterisation Technique Development |
ANZSRC Socio-Economic Objective (SEO)
Plastics in Primary Forms | Paints | Plastic Products (incl. Construction Materials) | Paints | Plastic products (incl. Construction materials) | Plastics in primary forms | Organic Industrial Chemicals (excl. Resins, Rubber and Plastics) | Expanding Knowledge in the Medical and Health Sciences | Expanding Knowledge in Technology | Mining and Extraction of Titanium Minerals, Zircon, and Rare Earth Metal Ores (e.g. Monazite) | Expanding Knowledge in the Chemical Sciences | Industrial Chemicals and Related Products not elsewhere classified | Expanding Knowledge in the Physical Sciences | Management of Greenhouse Gas Emissions from Manufacturing Activities | Coated Metal and Metal-Coated Products
Related Links
Publications
Rate enhanced nitroxide-mediated miniemulsion polymerization: effect of nitroxide water solubility
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3PY00305A
Multiblock Copolymer Synthesis via Reversible Addition–Fragmentation Chain Transfer Emulsion Polymerization: Effects of Chain Mobility within Particles on Control over Molecular Weight Distribution
Publisher: American Chemical Society (ACS)
Date: 05-04-2021
Gel formation and primary chain lengths in nitroxide-mediated radical copolymerization of styrene and divinylbenzene in miniemulsion
Publisher: Elsevier BV
Date: 02-2007
Nano-dimensional spheres and worms as fillers in polymer nanocomposites: effect of filler morphology
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D1PY01661J
Abstract: Poly(methyl methacrylate) based polymeric nanofillers are prepared via polymerization induced self-assembly (PISA). Nanofillers with worm-morphology result in more significant improvement in mechanical properties than spherical nanofillers.
Synthesis of diamine functionalised graphene oxide and its application in the fabrication of electrically conducting reduced graphene oxide/polymer nanocomposite films
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0NA00534G
Abstract: The study focussed on synthesis of colloidally stable diamine functionalised graphene oxide (GO) with dangling free amine groups, and exhibited physicochemical and electrical properties of these functionalised sheets in a polymer-based nanocomposite.
TEMPO-mediated radical polymerization of styrene in aqueous miniemulsion: Macroinitiator concentration effects
Publisher: Elsevier BV
Date: 07-2008
Influence of mid-chain radicals on acrylate free radical polymerization: Effect of ester alkyl group
Publisher: Wiley
Date: 06-09-2004
A Simple and Versatile Pathway for the Synthesis of Visible Light Photoreactive Nanoparticles
Publisher: Wiley
Date: 19-04-2018
Thermal and mechanical properties of polyurethanes derived from mono - and disaccharides
Publisher: Wiley
Date: 1997
DOI: 10.1002/(SICI)1097-0126(199701)42:1<1::AID-PI636>3.0.CO;2-L
Addition and Correction to “Mechanistic Aspects of the Functionalization of Graphene Oxide with Ethylene Diamine: Implications for Energy Storage Applications”
Publisher: American Chemical Society (ACS)
Date: 19-07-2021
Compartmentalization in Atom Transfer Radical Polymerization to High Conversion in Dispersed Systems: Effects of Diffusion-Controlled Reactions
Publisher: American Chemical Society (ACS)
Date: 13-01-2010
DOI: 10.1021/MA902309A
Polymer/Reduced Graphene Oxide/Lignosulfonate Nanocomposite Films as Pseudocapacitor Cathodes
Publisher: American Chemical Society (ACS)
Date: 03-2022
Effect of mixing sequence on the properties of carbon black and silica filled rubber
Publisher: Informa UK Limited
Date: 09-2003
Influence of Anionic Surfactants on the Fundamental Properties of Polymer/Reduced Graphene Oxide Nanocomposite Films
Publisher: American Chemical Society (ACS)
Date: 09-04-2021
Multiblock copolymer synthesis via RAFT emulsion polymerization
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D2CS00115B
Abstract: Emulsion polymerization mediated by RAFT confers a plenty of advantages for the synthesis of multiblock copolymers, including but not limited to control over particle morphology, molecular weight, livingness, composition, and time.
Sequence‐Controlled Multiblock Copolymers via RAFT Polymerization: Modeling and Simulations
Publisher: Wiley
Date: 20-02-2014
Synthesis and characterisation of gradient polymeric nanoparticles
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6PY02062C
Abstract: In this communication, we report the successful synthesis of gradient morphology nanoparticles composed of poly(styrene- co -methyl methacrylate) and their characterisation using X-Ray Photoelectron Spectroscopy (XPS).
Preparation of Methacrylate Polymer/Reduced Graphene Oxide Nanocomposite Particles Stabilized by Poly(ionic liquid) Block Copolymer via Miniemulsion Polymerization
Publisher: Wiley
Date: 29-04-2020
Functionalization of Graphene Oxide for the Production of Novel Graphene-Based Polymeric and Colloidal Materials
Publisher: Bentham Science Publishers Ltd.
Date: 05-2013
Formation of homogeneous nanocomposite films at ambient temperature via miniemulsion polymerization using graphene oxide as surfactant
Publisher: Wiley
Date: 29-04-2017
DOI: 10.1002/POLA.28613
Macromonomer synthesis using α‐(2‐methyl‐2‐phenylpropyl)acrylates as addition–fragmentation chain‐transfer agents expelling the cumyl radical
Publisher: Wiley
Date: 21-10-2004
DOI: 10.1002/POLA.20332
Copper(0)-mediated radical polymerisation in a self-generating biphasic system
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C2PY20560B
Influence of nitroxide structure on the 2,5‐ and 2,6‐spirodicyclohexyl substituted cyclic nitroxide‐mediated free‐radical polymerization of styrene
Publisher: Wiley
Date: 29-10-2003
DOI: 10.1002/POLA.10972
Compartmentalization in Atom Transfer Radical Polymerization (ATRP) in Dispersed Systems
Publisher: Wiley
Date: 11-10-2006
Synthesis of crosslinked polymeric nanocapsules using catanionic vesicle templates stabilized by compressed CO2
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5SM02075A
Abstract: The synthesis of polymeric nanocapsules in the approximate diameter range 40–100 nm (TEM/SEM) using catanionic surfactant vesicle templates stabilized by subcritical CO 2 is demonstrated.
Nitroxide-mediated radical polymerization in nanoreactors: Factors influencing compartmentalization effects on bimolecular termination
Publisher: Elsevier BV
Date: 12-2010
Network formation in nitroxide-mediated radical copolymerization of styrene and divinylbenzene in miniemulsion
Publisher: Wiley
Date: 29-09-2006
Nitroxide-mediated controlled/living radical copolymerizations with macromonomers
Publisher: Elsevier BV
Date: 03-2008
First nitroxide-mediated free radical dispersion polymerizations of styrene in supercritical carbon dioxide
Publisher: Elsevier BV
Date: 11-2005
Maintaining Colloidal Stability of Polymer/Reduced Graphene Oxide Nanocomposite Aqueous Dispersions Produced via In Situ Reduction of Graphene Oxide for the Preparation of Electrically Conducti
Publisher: American Chemical Society (ACS)
Date: 16-03-2023
Polymeric Nanocapsules for Enzyme Stabilization in Organic Solvents
Publisher: American Chemical Society (ACS)
Date: 02-01-2018
Reversible addition–fragmentation chain transfer polymerization of alkyl-2-cyanoacrylates: An assessment of livingness
Publisher: Wiley
Date: 26-02-2017
DOI: 10.1002/POLA.28509
Detailed studies of the initiation step in free radical polymerization of α-(substituted methyl)acrylates by electron paramagnetic resonance spectroscopy
Publisher: Elsevier BV
Date: 05-2003
New aspects of unsaturated polyester resin synthesis. Part 2. Reactant sequence distribution and its effect on cure kinetics
Publisher: Wiley
Date: 22-04-2003
DOI: 10.1002/PI.1129
Nitroxide-Mediated Radical Polymerization in Miniemulsion On the Basis of in Situ Surfactant Formation without Use of Homogenization Device
Publisher: American Chemical Society (ACS)
Date: 17-06-2010
DOI: 10.1021/MA101001J
Nitroxide-Mediated Radical Polymerization of Butyl Acrylate Using TEMPO: Improvement of Control Exploiting Nanoreactors?
Publisher: Wiley
Date: 12-08-2010
Abstract: Compartmentalization effects in the nitroxide‐mediated radical polymerization of butyl acrylate in a dispersed system using the nitroxide 2,2,6,6‐tetramethylpiperidine‐ N ‐oxyl (TEMPO) at 130 °C have been examined by means of modeling and simulations employing modified Smith–Ewart equations that account for compartmentalization effects on both propagating radicals and free nitroxide species. TEMPO‐mediated acrylate polymerization is known to be problematic, speculated to be mainly related to excessive accumulation of free TEMPO with increasing conversion. The present theoretical results indicate that it may be possible to at least partially overcome this difficulty by careful exploitation of compartmentalization effects in nanoreactors. magnified image
Synthesis of Multicompositional Onion‐like Nanoparticles via RAFT Emulsion Polymerization
Publisher: Wiley
Date: 15-09-2021
Abstract: Synthesis of multicompositional polymeric nanoparticles of diameters 100–150 nm comprising well‐defined multiblock copolymers reaching from the particle surface to the particle core was conducted using surfactant‐free aqueous macroRAFT emulsion polymerization. The imposed constraints on chain mobility as well as chemical incompatibility between the blocks result in microphase separation, leading to formation of an onion‐like multilayered particle morphology with in idual layer thicknesses of approximately 20 nm. The approach provides considerable versatility in particle morphology design as the composition of in idual layers as well as the number of layers can be tailored as desired, offering more complex particle design compared to approaches relying on self‐assembly of preformed diblock copolymers within particles. Microphase separation can occur in these systems under conditions where the corresponding bulk system would not theoretically result in microphase separation.
Polymerization induced self-Assembly: Tuning of morphology using ionic strength and pH
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7PY00552K
Abstract: It is demonstrated how the morphology of polymeric nanoparticles produced via polymerization-induced self-assembly (PISA) in dispersion can be conveniently tuned via the pH and ionic strength.
Synthesis of polymeric nano-objects of various morphologies based on block copolymer self-assembly using microporous membranes
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7RE00032D
Abstract: Polymeric nano-objects of a range of morphologies have been prepared using a novel approach based on the use of microporous membranes for mixing of a solvent (containing a diblock copolymer) and a non-solvent.
Ionic–Electronic Conductivity in Ternary Polymer/Reduced Graphene Oxide/Polyelectrolyte Nanocomposite Coatings for Potential Application in Energy Storage
Publisher: American Chemical Society (ACS)
Date: 09-02-2023
Miniemulsion polymerization using carboxylated graphene quantum dots as surfactants: effects of monomer and initiator type
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0PY00925C
Abstract: The effectiveness of carboxylated graphene quantum dots (cGQDs) as sole surfactants have been investigated in miniemulsion polymerization of 8 different vinyl monomers, initiated by oil-soluble initiator AIBN and water-soluble initiator VA-044.
Synthesis of Nanosized (< 20 nm) Polymer Particles by Radical Polymerization in Miniemulsion Employing in situ Surfactant Formation
Publisher: Wiley
Date: 13-07-2011
Abstract: A novel method for synthesis of ultrafine polymeric nanoparticles of diameters less than 20 nm has been developed. The method is based on miniemulsion polymerization exploiting combination of the in situ surfactant generation approach (whereby the surfactant is formed at the oil-water interface by reaction between an organic acid and a base) and ultrasonication. Conventional radical polymerization and nitroxide-mediated radical polymerization of styrene have been conducted in miniemulsion using oleic acid otassium hydroxide, demonstrating that particles with diameters less than 20 nm can be obtained by this approach at surfactant contents much lower than traditionally required in microemulsion polymerizations.
Particle Size Control in Miniemulsion Polymerization via Membrane Emulsification
Publisher: American Chemical Society (ACS)
Date: 12-06-2019
Synergy of Experiment and Computer Simulations in Free Radical Polymerization Research
Publisher: Society of Polymer Science, Japan
Date: 2003
Pickering miniemulsion polymerization using graphene oxide: effect of addition of a conventional surfactant
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8PY00667A
Abstract: Polystyrene/graphene oxide (PSt/GO) nanocomposite latexes have been prepared by Pickering miniemulsion polymerization in the presence of the conventional surfactant sodium dodecyl sulfate (SDS) in order to investigate its influence on the polymerization mechanism.
Biomimetic radical polymerization via cooperative assembly of segregating templates
Publisher: Springer Science and Business Media LLC
Date: 22-04-2012
DOI: 10.1038/NCHEM.1331
Abstract: Segregation and templating approaches have been honed by billions of years of evolution to direct many complex biological processes. Nature uses segregation to improve biochemical control by organizing reactants into defined, well-regulated environments, and the transfer of genetic information is a primary function of templating. The ribosome, wherein messenger RNA is translated into polypeptides, combines both techniques to allow for ideal biopolymer syntheses. Herein is presented a biomimetic segregation/templating approach to synthetic radical polymerization. Polymerization of a nucleobase-containing vinyl monomer in the presence of a complementary block copolymer template of low molecular weight yields high molecular weight (M(w) up to ~400,000 g mol(-1)), extremely low polydispersity (≤1.08) daughter polymers. Control is attained by segregation of propagating radicals in discrete micelle cores (via cooperative assembly of dynamic template polymers). Significantly reduced bimolecular termination, combined with controlled propagation along a defined number of templates, ensures unprecedented control to afford well-defined high molecular weight polymers.
Atom Transfer Radical Polymerization of iso‐Butyl Methacrylate in Microemulsion with Cationic and Non‐Ionic Emulsifiers
Publisher: Wiley
Date: 28-01-2008
Lactate and glucose induced self‐assembly of hydrophobic boronic acid‐substituted polymers
Publisher: Wiley
Date: 13-01-2023
DOI: 10.1002/POL.20220766
Abstract: Amphiphilic boronic acid (BA)‐substituted block copolymers have been utilized in biomedical applications through binding to saccharides, including to glucose whereas binding to the anaerobically produced metabolite lactate is unreported. Glucose requires basic conditions, while lactate binding occurs at neutral physiological conditions. Herein, BA binding to glucose and lactate is used for the first time to convert solvated hydrophobic homopolymer and hydrophobic block copolymers to hiphilic core‐shell nanoparticle spheres and worms.
Critically evaluated termination rate coefficients for free-radical polymerization: Experimental methods
Publisher: Elsevier BV
Date: 06-2005
Nitroxide‐Mediated Controlled/Living Free Radical Copolymerization of Styrene and Divinylbenzene in Aqueous Miniemulsion
Publisher: Wiley
Date: 09-06-2005
Controlled/Living Radical Polymerization in Dispersed Systems: An Update
Publisher: American Chemical Society (ACS)
Date: 27-08-2015
DOI: 10.1021/CR500625K
Nitroxide-Mediated Radical Polymerization of Styrene in Aqueous Microemulsion: Initiator Efficiency, Compartmentalization, and Nitroxide Phase Transfer
Publisher: American Chemical Society (ACS)
Date: 31-07-2009
DOI: 10.1021/MA9012829
Mechanical properties of cross-linked polymer particles prepared by nitroxide-mediated radical polymerization in aqueous micro-suspension
Publisher: Elsevier BV
Date: 06-2007
Nitroxide-Mediated Radical Dispersion Polymerization of Styrene in Supercritical Carbon Dioxide Using a Poly(dimethylsiloxane-b-methyl methacrylate) Stabilizer
Publisher: American Chemical Society (ACS)
Date: 06-09-2006
DOI: 10.1021/MA061154N
Multiblock copolymer synthesis via aqueous RAFT polymerization-induced self-assembly (PISA)
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2PY01005D
Abstract: Employing RAFT PISA emulsion polymerization to synthesize high molecular weight hexablock multiblock copolymers.
Pushing the limit of the RAFT process: Multiblock copolymers by one-pot rapid multiple chain extensions at full monomer conversion
Publisher: American Chemical Society (ACS)
Date: 14-05-2014
DOI: 10.1021/MA402435N
Use of fluorescence-labelled macroinitiator to investigate nucleation mechanism in nitroxide-mediated crosslinking polymerization in aqueous miniemulsion
Publisher: Springer Science and Business Media LLC
Date: 19-02-2008
Synthesis of polymeric nanoparticles containing reduced graphene oxide nanosheets stabilized by poly(ionic liquid) using miniemulsion polymerization
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6SM00269B
Abstract: Polymeric nanoparticles containing reduced graphene oxide (rGO) nanosheets have been prepared by aqueous miniemulsion radical polymerization of methyl methacrylate (MMA) utilizing poly(ionic liquid) (PIL) as stabilizer to effectively disperse the rGO nanosheets in the monomer phase. The PIL that gave the best results in terms of rGO dispersibility was a block copolymer of the ionic liquid monomer 1-(2-methacryloyloxyethyl)-3-butylimidazolium bis(trifluoromethanesulfonyl)amide ([Mbim][TFSA]) and MMA, the concept being that the MMA units impart solubility in the MMA monomer droplets whereas the IL units act as adsorption sites for rGO. The rGO dispersibility in vinyl monomer was demonstrated to be superior using the above PIL block copolymer compared to the corresponding statistical copolymer or PIL homopolymer. Overall, the approach developed demonstrates how PILs can be employed to conveniently switch (turn ON/OFF) the dispersibility of PIL/rGO via anion exchange reactions, which can be an efficient strategy for synthesis of polymer/rGO nanocomposite materials.
Electrochemically-Initiated RAFT Synthesis of Low Dispersity Multiblock Copolymers by Seeded Emulsion Polymerization
Publisher: American Chemical Society (ACS)
Date: 20-02-2023
Exploitation of the nanoreactor concept for efficient synthesis of multiblock copolymers via macroraft-mediated emulsion polymerization
Publisher: American Chemical Society (ACS)
Date: 23-07-2019
DOI: 10.1021/ACSMACROLETT.9B00534
Abstract: Multiblock copolymers are a class of polymeric materials with a range of potential applications. We report here a strategy for the synthesis of multiblock copolymers based on methacrylates. Reversible addition-fragmentation chain transfer (RAFT) polymerization is implemented as an emulsion polymerization to generate seed particles as nanoreactors, which can subsequently be employed in sequential RAFT emulsion polymerizations. The segregation effect allowed the synthesis of a high molar mass (>100,000 g·mol
Compartmentalization in NMP in Dispersed Systems: Relative Contributions of Confined Space Effect and Segregation Effect Depending on Nitroxide Type
Publisher: Wiley
Date: 14-07-2009
Abstract: Modeling and simulations employing modified Smith‐Ewart equations have been performed to elucidate compartmentalization effects (the segregation effect and the confined space effect) in nitroxide‐mediated polymerization of styrene at 125 °C in dispersed systems using the nitroxides TEMPO and TIPNO. By proper choice of particle size, it is possible to improve both the level of control and livingness relative to the corresponding homogeneous (bulk/solution) systems. magnified image
Exploiting the homogeneous expansion limit of CO2-expanded media for the synthesis of polymeric nanoparticles
Publisher: Elsevier BV
Date: 06-2013
Assessment of the influence of microwave irradiation on conventional and RAFT radical polymerization of styrene
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2PY20434G
Polymerization-induced self-assembly: Via RAFT in emulsion: Effect of Z-group on the nucleation step
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D0PY01311K
Abstract: It is demonstrated that the nature of the Z-group of trithiocarbonate RAFT agents can have a major effect on the nucleation step of aqueous RAFT PISA performed as emulsion polymerization.
Chain transfer to solvent in the radical polymerization of structurally diverse acrylamide monomers using straight-chain and branched alcohols as solvents
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3PY01441J
Low-Dispersity Polymers in Ab Initio Emulsion Polymerization: Improved MacroRAFT Agent Performance in Heterogeneous Media
Publisher: American Chemical Society (ACS)
Date: 03-09-2020
Reversible Destabilization of UV‐Responsive Polymer Particles (Latex) using a Photoresponsive Surfactant
Publisher: Wiley
Date: 30-09-2019
Abstract: Production of aqueous dispersions of polymeric nanoparticles via heterogeneous radical polymerization in emulsion-type systems is of enormous commercial importance. The ability to reversibly destabilize such a latex is highly desirable, for ex le, to save transportation costs. Herein, a method for synthesis of photo-responsive polymer latexes that can be destabilized (leading to sedimentation) by only using UV irradiation (no addition of chemicals or change in the experimental conditions) and subsequently redispersed by stirring under visible light irradiation is described. The destabilization/redispersion mechanism relies on photoinduced trans-cis isomerization of the cationic diazene surfactant 2-(4-(4-butylphenyl)diazenylphenoxy)ethyltrimethylammonium bromide (C4AzoTAB) used in conjunction with the anionic surfactant sodium dodecyl sulfate. It is demonstrated that reversible destabilization can be achieved very rapidly (90 s residence time) employing continuous flow technology.
High molecular weight block copolymers by sequential monomer addition via Cu(0)-mediated living radical polymerization (SET-LRP): An optimized approach
Publisher: American Chemical Society (ACS)
Date: 23-09-2013
DOI: 10.1021/MZ4004198
Abstract: The synthesis of well-defined high molecular weight block copolymers by sequential in situ chain extensions via Cu(0)-mediated living radical polymerization is reported. Optimal conditions for iterative high molecular weight block formation were determined using model homopolymer quasiblock systems, including methyl acrylate (MA), ethyl acrylate (EA), and
Dispersion polymerization of styrene in CO2-expanded ethanol
Publisher: Elsevier BV
Date: 11-2013
Preparation of onion-like multilayered particles comprising mainly poly(iso-butyl methacrylate)-block-polystyrene by two-step AGET ATRP
Publisher: Elsevier BV
Date: 07-2009
Nitroxide-Mediated Radical Polymerization in Microemulsion (Microemulsion NMP) of n-Butyl Acrylate
Publisher: American Chemical Society (ACS)
Date: 23-06-2011
DOI: 10.1021/MA200859S
Polymer-inorganic hybrid nanoparticles of various morphologies via polymerization-induced self assembly and sol–gel chemistry
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6PY01447J
Abstract: The preparation of polymer-silica hybrid nanoparticles of various morphologies is reported.
Synthesis of biodegradable hydrogel nanoparticles for bioapplications using inverse miniemulsion RAFT polymerization
Publisher: American Chemical Society (ACS)
Date: 18-08-2011
DOI: 10.1021/MA201531W
Polymeric Nanofibers of Various Degrees of Cross‐Linking as Fillers in Poly(styrene‐ stat‐n ‐butyl acrylate) Nanocomposites: Overcoming the Trade‐Off between Tensile Strength and Stretchability
Publisher: Wiley
Date: 05-2022
Abstract: Synthesis of light polymer nanocomposites with high strength and toughness has been a significant interest for its potential applications in industry. Herein, the authors have synthesized polymerization‐induced self‐assembly (PISA) derived nanodimensional polymeric worm (fiber) reinforced polymer nanocomposites by a simple and environmentally friendly synthesis process without the addition of volatile organic compounds. PISA‐derived worms with a core‐forming block of low glass transition temperature ( T g ≈ 27.1 °C) comprising poly(styrene‐ stat ‐ n ‐butyl acrylate) have been employed as reinforcing filler. The influence of core‐segment cross‐linking on reinforcement efficiency has been explored by comparing noncross‐linked worms, and worms cross‐linked with a small amount of ethylene glycol diacrylate introduced at t = 0 h or t = 2 h of polymerization. Upon addition of 1 wt% of noncross‐linked, t = 0 h cross‐linked, and t = 2 h cross‐linked worms, toughness of polymer nanocomposites can be enhanced by 62%, 114%, and 120%, respectively. The results suggest that the reinforcement efficiency of worms is significantly influenced by the cross‐linking of core‐segments regardless of cross‐linking methods. This work broadens the understanding in application of PISA‐derived worms as reinforcing filler by demonstrating the efficient reinforcement with low T g worms.
Visible-Light-Regulated Controlled/Living Radical Polymerization in Miniemulsion
Publisher: American Chemical Society (ACS)
Date: 23-09-2015
The role of excess nitroxide in the SG1 (N‐tert‐butyl‐N‐[1‐diethylphosphono‐(2,2‐dimethylpropyl)] nitroxide)‐mediated polymerization of methyl methacrylate
Publisher: Wiley
Date: 13-04-2007
DOI: 10.1002/POLA.21986
Macromonomer preparation by radical polymerization and copolymerization of the unsaturated tetramer of methyl acrylate
Publisher: Springer Science and Business Media LLC
Date: 06-2003
Mechanism and kinetics of the free radical ring-opening polymerization of cyclic allylic sulfide lactones
Publisher: Elsevier BV
Date: 12-2005
Exploitation of the degenerative transfer mechanism in RAFT polymerization for synthesis of polymer of high livingness at full monomer conversion
Publisher: American Chemical Society (ACS)
Date: 09-01-2014
DOI: 10.1021/MA402286E
Synthesis of Multicompositional Onion‐like Nanoparticles via RAFT Emulsion Polymerization
Publisher: Wiley
Date: 15-09-2021
Abstract: Synthesis of multicompositional polymeric nanoparticles of diameters 100–150 nm comprising well‐defined multiblock copolymers reaching from the particle surface to the particle core was conducted using surfactant‐free aqueous macroRAFT emulsion polymerization. The imposed constraints on chain mobility as well as chemical incompatibility between the blocks result in microphase separation, leading to formation of an onion‐like multilayered particle morphology with in idual layer thicknesses of approximately 20 nm. The approach provides considerable versatility in particle morphology design as the composition of in idual layers as well as the number of layers can be tailored as desired, offering more complex particle design compared to approaches relying on self‐assembly of preformed diblock copolymers within particles. Microphase separation can occur in these systems under conditions where the corresponding bulk system would not theoretically result in microphase separation.
Copolymerization of eight-membered ring-opening allylic sulfide lactone and disulfide monomers with methyl methacrylate and styrene
Publisher: Elsevier BV
Date: 10-2006
CO2-responsive polyacrylamide copolymer vesicles with acid-sensitive morpholine moieties and large hydrophobic RAFT end-group
Publisher: Elsevier BV
Date: 12-2017
Controlled/living radical polymerization in dispersed systems
Publisher: American Chemical Society (ACS)
Date: 27-08-2008
DOI: 10.1021/CR800242X
Grafting of P(OEGA) Onto Magnetic Nanoparticles Using Cu(0) Mediated Polymerization: Comparing Grafting "from" and "to" Approaches in the Search for the Optimal Material, Design of Nanoparticle MRI Contrast Agents
Publisher: American Chemical Society (ACS)
Date: 02-08-2013
DOI: 10.1021/MA401250F
Free radical bulk polymerization of styrene: Simulation of molecular weight distributions to high conversion using experimentally obtained rate coefficients
Publisher: Wiley
Date: 07-2003
Instantaneous copolymer composition in high conversion copolymerization of acrylonitrile and methyl acrylate assessed by in situ C-13 NMR measurements of individual monomer reaction rates
Publisher: American Chemical Society (ACS)
Date: 18-02-2005
DOI: 10.1021/MA048154C
Inverse Miniemulsion Periphery RAFT Polymerization: A Convenient Route to Hollow Polymeric Nanoparticles with an Aqueous Core
Publisher: American Chemical Society (ACS)
Date: 12-03-2013
DOI: 10.1021/MA4002148
Electrically conductive polymer/rGO nanocomposite films at ambient temperature via miniemulsion polymerization using GO as surfactant
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9NR00816K
Abstract: A facile method to synthesize colloidally stable polymer nanoparticles decorated with GO sheets via miniemulsion polymerization, which enables the preparation of electrically conductive films using a simple dropcasting method.
A facile route to segmented copolymers by fusing ambient temperature step-growth and RAFT polymerization
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7CC06347D
Abstract: We introduce the facile synthesis of segmented copolymers via a catalyst-free Diels–Alder (DA) reaction at ambient temperature via step-growth polymerization and subsequent reversible addition fragmentation chain transfer (RAFT) polymerization.
Penultimate unit effects in free radical copolymerization studied using the individual propagating radical concentrations from electron spin resonance spectroscopy
Publisher: American Chemical Society (ACS)
Date: 14-09-2002
DOI: 10.1021/MA020695J
Synthesis of low glass transition temperature worms comprising a poly(styrene-stat-n-butyl acrylate) core segment via polymerization-induced self-assembly in RAFT aqueous emulsion polyme
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D1PY01636A
Abstract: Synthesis of nanodimensional polymeric worms of low glass transition temperature using aqueous polymerization-induced self-assembly.
Visible Light-Mediated Polymerization-Induced Self-Assembly Using Continuous Flow Reactors
Publisher: American Chemical Society (ACS)
Date: 06-07-2018
Compartmentalization Effects on Bimolecular Termination in Atom Transfer Radical Polymerization in Nanoreactors
Publisher: Wiley
Date: 28-07-2011
Nitroxide‐mediated stabilizer‐free inverse suspension polymerization of N‐isopropylacrylamide in supercritical carbon dioxide
Publisher: Wiley
Date: 08-02-2011
DOI: 10.1002/POLA.24580
Polymerization induced self-assembly: Tuning of nano-object morphology by use of CO2
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C4PY01632G
Abstract: A novel method for synthesis of polymeric nano-objects via polymerization-induced self-assembly in a CO 2 -expanded medium has been developed.
Nitroxide‐mediated radical polymerization of carbon dioxide‐expanded methyl methacrylate
Publisher: Wiley
Date: 13-10-2010
DOI: 10.1002/POLA.24343
Compartmentalization in TEMPO-mediated radical polymerization in dispersed systems: Effects of macroinitiator concentration
Publisher: Wiley
Date: 23-03-2007
RAFT Emulsion Polymerization for (Multi)block Copolymer Synthesis: Overcoming the Constraints of Monomer Order
Publisher: American Chemical Society (ACS)
Date: 05-01-2021
Free volume-based modelling of free radical crosslinking polymerisation of unsaturated polyesters
Publisher: Elsevier BV
Date: 03-2002
Nitroxide-Mediated Radical Polymerization in Nanoreactors: Can Dilution or Increased Nitroxide Concentration Provide Benefits Similar to Compartmentalization?
Publisher: CSIRO Publishing
Date: 2010
DOI: 10.1071/CH10063
Abstract: Compartmentalization of a nitroxide-mediated radical polymerization system can lead to improved levels of both control and livingness, but at the cost of a reduced polymerization rate. Improved control is a result of the confined space effect on deactivation, whereas improved livingness stems from the segregation effect on bimolecular termination. Modelling and simulations have been carried out for the systems styrene/2,2,6,6-tetramethylpiperidine-N-oxyl (TEMPO) and styrene/2,2,5-trimethyl-4-phenyl-3-azahexane-3-oxy (TIPNO) using the respective nitroxide-based polystyrene macroinitaitors (alkoxyamines) at 125°C to elucidate whether similar benefits can be obtained in the corresponding bulk polymerizations by merely diluting the systems or by addition of extra free nitroxide. The results have shown that neither approach leads to simultaneous improvement in control and livingness relative to the corresponding bulk systems, thus accentuating the merits of compartmentalization in nanoreactors.
Mechanistic Aspects of the Functionalization of Graphene Oxide with Ethylene Diamine: Implications for Energy Storage Applications
Publisher: American Chemical Society (ACS)
Date: 26-02-2021
In Situ Surfactant Effects on Polymer/Reduced Graphene Oxide Nanocomposite Films: Implications for Coating and Biomedical Applications
Publisher: American Chemical Society (ACS)
Date: 05-11-2021
Modification of graphene/graphene oxide with polymer brushes using controlled/living radical polymerization
Publisher: Wiley
Date: 08-05-2012
DOI: 10.1002/POLA.26094
Particle size effects in TEMPO-mediated radical polymerization of styrene in aqueous miniemulsion
Publisher: Wiley
Date: 12-2006
Soft polyhedral particles based on cubic liquid crystalline emulsion droplets
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7SM01521F
Abstract: Soft polyhedral particles based on variations of the cubic symmetry group are produced from a precursor emulsion by extracting solvent to grow facets on the droplets.
Mechanistic investigation of particle size effects in TEMPO-mediated radical polymerization of styrene in aqueous miniemulsion
Publisher: American Chemical Society (ACS)
Date: 24-10-2007
DOI: 10.1021/MA0712403
Addition-fragmentation chain transfer involving dimers of α-methylvinyl monomers studied by ESR spectroscopy: Competition between fragmentation and bimolecular termination
Publisher: Wiley
Date: 02-2003
Kinetics of polyesterification: Modelling of the condensation of maleic anhydride, phthalic anhydride, and 1,2-propylene glycol
Publisher: Informa UK Limited
Date: 2002
Microcapsule synthesis via RAFT photopolymerization in vegetable Oil as a green solvent
Publisher: Wiley
Date: 30-01-2018
DOI: 10.1002/POLA.28958
First Nitroxide‐Mediated Controlled/Living Free Radical Polymerization in an Ionic Liquid
Publisher: Wiley
Date: 21-04-2004
Radical Polymerization of Alkyl 2-Cyanoacrylates
Publisher: MDPI AG
Date: 20-02-2018
Water and Carbon Dioxide: A Unique Solvent for the Catalytic Polymerization of Ethylene in Miniemulsion
Publisher: Wiley
Date: 21-07-2017
Abstract: The catalytic polymerization of ethylene is performed in water pressurized with CO
Nitroxide-mediated radical polymerization in miniemulsion: Bimolecular termination in monomer-free model systems
Publisher: Wiley
Date: 18-09-2007
DOI: 10.1002/POLA.22294
Synthesis of pH-Responsive Nanocapsules via Inverse Miniemulsion Periphery RAFT Polymerization and Post-Polymerization Reaction
Publisher: American Chemical Society (ACS)
Date: 04-09-2014
DOI: 10.1021/MZ5005019
Mechanism and Kinetics of the Free Radical Ring-Opening Polymerization of Eight-Membered Cyclic Allylic Disulfide Monomers
Publisher: American Chemical Society (ACS)
Date: 22-02-2005
DOI: 10.1021/MA047894I
Compartmentalization in Atom Transfer Radical Polymerization of Styrene in Dispersed Systems: Effects of Target Molecular Weight and Halide End Group
Publisher: American Chemical Society (ACS)
Date: 13-03-2009
DOI: 10.1021/MA900035X
Free radical polymerization of styrene: Mass spectrometric identification of the first 15 nitroxide-trapped oligomers and estimated propagation rate coefficients
Publisher: American Chemical Society (ACS)
Date: 08-08-2002
DOI: 10.1021/MA020325V
Polymerization-induced self-assembly based on ATRP in supercritical carbon dioxide
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9PY00498J
Abstract: Polymerization-induced self-assembly (PISA) based on ATRP has been successfully conducted in scCO 2 resulting in polymer particles of high order morphology.
Photopolymerization in dispersed systems
Publisher: Elsevier BV
Date: 09-2018
Miniemulsion polymerization using graphene oxide as surfactant: In situ grafting of polymers
Publisher: Elsevier BV
Date: 08-2019
Alkoxyamine‐mediated “living” radical polymerization: MS investigation of the early stages of styrene polymerization initiated by cumyl‐TEISO
Publisher: Wiley
Date: 28-02-2001
DOI: 10.1002/POLA.1100
Influence of Monomer Type on Miniemulsion Polymerization Systems Stabilized by Graphene Oxide as Sole Surfactant
Publisher: Wiley
Date: 09-10-2013
DOI: 10.1002/POLA.26947
Nitroxide-mediated precipitation polymerization of styrene in supercritical carbon dioxide: Effects of monomer loading and nitroxide partitioning on control
Publisher: Elsevier BV
Date: 12-2008
A new method for the determination of the Arrhenius constants for the cure process of unsaturated polyester resins based on a mechanistic model
Publisher: Elsevier BV
Date: 12-1996
Gelation and Hollow Particle Formation in Nitroxide-Mediated Radical Copolymerization of Styrene and Divinylbenzene in Miniemulsion
Publisher: Wiley
Date: 28-01-2009
Controlled/living heterogeneous radical polymerization in supercritical carbon dioxide
Publisher: Wiley
Date: 10-06-2009
DOI: 10.1002/POLA.23432
Preparation of Polymer Particles Containing Reduced Graphene Oxide Nanosheets Using Ionic Liquid Monomer
Publisher: American Chemical Society (ACS)
Date: 03-02-2016
Preparation of Composite Materials by Using Graphene Oxide as a Surfactant in Ab Initio Emulsion Polymerization Systems
Publisher: American Chemical Society (ACS)
Date: 05-07-2013
DOI: 10.1021/MZ400280T
Abstract: In this letter, we report a simple and unexpected method of producing polymer-graphene oxide (GO) composite materials via ab initio emulsion polymerization in water. On the basis of the recent reports concerning the surfactant-like behavior of GO for stabilizing oil-in-water emulsions, we prepared exfoliated GO sheets with lateral dimension approximately 200 nm for use as surfactant in the emulsion polymerization of styrene. We observed an expected "classic" surfactant behavior to produce stable nanoparticles at extremely low GO loadings (<0.1% w/w) however, at higher concentrations a highly aggregated, fibrous morphology was formed. This morphology is predominantly due to the electrolyte concentration (ionic strength) of the aqueous phase resulting in heterocoagulation of growing oligomers with dispersed GO sheets, which offers a convenient route toward preparing hybrid materials.
Enhanced Osteogenic Differentiation of Human Fetal Cartilage Rudiment Cells on Graphene Oxide-PLGA Hybrid Microparticles
Publisher: MDPI AG
Date: 30-07-2019
DOI: 10.3390/JFB10030033
Abstract: Poly(d,l–lactide–co–glycolide) (PLGA) has been extensively explored for bone regeneration applications however, its clinical use is limited by low osteointegration. Therefore, approaches that incorporate osteoconductive molecules are of great interest. Graphene oxide (GO) is gaining popularity for biomedical applications due to its ability to bind biological molecules and present them for enhanced bioactivity. This study reports the preparation of PLGA microparticles via Pickering emulsification using GO as the sole surfactant, which resulted in hybrid microparticles in the size range of 1.1 to 2.4 µm based on the ratio of GO to PLGA in the reaction. Furthermore, this study demonstrated that the hybrid GO-PLGA microparticles were not cytotoxic to either primary human fetal cartilage rudiment cells or the human osteoblast-like cell line, Saos-2. Additionally, the GO-PLGA microparticles promoted the osteogenic differentiation of the human fetal cartilage rudiment cells in the absence of exogenous growth factors to a greater extent than PLGA alone. These findings demonstrate that GO-PLGA microparticles are cytocompatible, osteoinductive and have potential as substrates for bone tissue engineering.
Nitroxide-Mediated Radical Polymerization in Dispersed Systems: Compartmentalization and Nitroxide Partitioning
Publisher: Wiley
Date: 02-2010
RAFT iniferter polymerization in miniemulsion using visible light
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7PY00939A
Abstract: Methodology for the successful implementation of RAFT (4-cyano-4[(dodecylsulfanylthiocarbonyl)sulfanyl]pentanoic acid (CDTPA)) iniferter polymerization of butyl methacrylate in miniemulsion using visible light (green light λ max = 530 nm) has been developed.
Mechanism and kinetics of the imidazolidinone nitroxide‐mediated free‐radical polymerization of styrene
Publisher: Wiley
Date: 09-12-2002
DOI: 10.1002/POLA.10582
Graphene oxide (GO) nanosheets as oil-in-water emulsion stabilizers: Influence of oil phase polarity
Publisher: Elsevier BV
Date: 03-2015
DOI: 10.1016/J.JCIS.2014.11.047
Abstract: Two-dimensional nanoparticles such as graphene oxide (GO) can serve as emulsion stabilizers due their ability to adsorb at oil-water (o/w) interfaces with high atom efficiency. The ability for GO to act as a surfactant is hypothesized to be highly dependent on the nature (i.e. polarity) of the oil phase, which has not considered previously. The stabilization energy associated with adsorption of GO sheets at an o/w interface was modelled as a function of the polarity of the oil phase using surface tension contributions terms and Hansen solubility parameters (HSPs). Oil-in-water (o/w) miniemulsions were prepared via ultrasonication in the presence of GO for a variety of different oil phases, and were studied using dynamic light scattering (DLS). The stabilization energy associated with GO adsorption was greater for non-polar oil phases compared to more polar oils. This behaviour is driven by the significant reduction in the oil-water interfacial tension as the polarity of the oil increases, to the point where GO adsorption is no longer thermodynamically favourable. This was verified by DLS measurements experiments, as GO-stabilized emulsion were successfully prepared for hydrophobic and aromatic oil phases (e.g. styrene), but not for polar oil phases such as methyl methacrylate.
Synthesis of hollow polymeric nanoparticles for protein delivery via inverse miniemulsion periphery RAFT polymerization
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2CC36116G
Abstract: Hollow polymeric nanoparticles with a hydrophilic liquid core have been synthesized in a one-pot approach via a novel inverse miniemulsion periphery RAFT polymerization process. Successful encapsulation and release of a model protein is reported as a potential application.
Early propagation kinetics in the free radical polymerization of methacrylonitrile investigated by a nitroxide trapping technique
Publisher: Wiley
Date: 27-10-2003
DOI: 10.1002/PI.1291
Initiation in the free radical (co) polymerization of dialkyl fumarates and dicyclohexyl fumarate/tert-butyl vinyl ether investigated by a nitroxide trapping technique
Publisher: Wiley
Date: 27-10-2003
DOI: 10.1002/PI.1292
Reaction behavior of sterically hindered α‐(substituted methyl)acrylic esters with tert‐butoxy radicals studied by a nitroxide trapping technique
Publisher: Wiley
Date: 27-10-2003
DOI: 10.1002/PI.1293
Nitroxide‐Mediated Radical Precipitation Polymerization of Styrene in Supercritical Carbon Dioxide
Publisher: Wiley
Date: 10-08-2007
Utility of propenyl groups in free radical polymerization: Effects of steric hindrance on formation and reaction behavior as versatile intermediates
Publisher: Elsevier BV
Date: 10-2006
The Nanoreactor Concept: Kinetic Features of Compartmentalization in Dispersed Phase Polymerization
Publisher: American Chemical Society (ACS)
Date: 07-10-2019
Estimation of Copolymer/Water Interfacial Tensions Using Pendant Drop Tensiometry
Publisher: American Chemical Society (ACS)
Date: 17-05-2018
DOI: 10.1021/ACS.LANGMUIR.8B00554
Abstract: Copolymer/water interfacial tensions of statistical copolymers of styrene/ n-butyl acrylate were estimated by pendant drop tensiometry using an "inverse" configuration according to which a drop of water was formed in toluene/copolymer solutions. The study first involved the precise measurement of copolymer solutions density using pycnometry. Subsequently, interfacial tensions of copolymer solutions against water were plotted as a function of copolymer concentration in toluene. Several methods were explored to fit the experimental data and obtain estimates of copolymer/water interfacial tensions at 100% copolymer concentration in toluene by extrapolation. The Belton-Evans extrapolation resulted in the best fit with the experimental data. When plotted as a function of the styrene composition of the copolymer, the interfacial tensions estimates followed an additivity relationship. This enabled estimation of the copolymer/water interfacial tensions directly from their respective homopolymer/water interfacial tensions values. These results are particularly useful for the prediction of composite particle morphology involving copolymerization of multiple monomers.
Propagation and termination kinetics in high conversion free radical co-polymerization of styrene/divinylbenzene investigated by electron spin resonance and Fourier-transform near-infrared spectroscopy
Publisher: Elsevier BV
Date: 2002
Nano-sized graphene oxide as sole surfactant in miniemulsion polymerization for nanocomposite synthesis: Effect of pH and ionic strength
Publisher: Elsevier BV
Date: 08-2014
Polymer Synthesis in Continuous Flow Reactors
Publisher: Elsevier BV
Date: 08-2020
High-conversion free-radical bulk polymerization of styrene: Termination kinetics studied by electron spin resonance, fourier transform near-infrared spectroscopy, and gel permeation chromatography
Publisher: American Chemical Society (ACS)
Date: 29-09-2001
DOI: 10.1021/MA010560Y
The limits of precision monomer placement in chain growth polymerization
Publisher: Springer Science and Business Media LLC
Date: 02-2016
DOI: 10.1038/NCOMMS10514
Abstract: Precise control over the location of monomers in a polymer chain has been described as the ‘Holy Grail’ of polymer synthesis. Controlled chain growth polymerization techniques have brought this goal closer, allowing the preparation of multiblock copolymers with ordered sequences of functional monomers. Such structures have promising applications ranging from medicine to materials engineering. Here we show, however, that the statistical nature of chain growth polymerization places strong limits on the control that can be obtained. We demonstrate that monomer locations are distributed according to surprisingly simple laws related to the Poisson or beta distributions. The degree of control is quantified in terms of the yield of the desired structure and the standard deviation of the appropriate distribution, allowing comparison between different synthetic techniques. This analysis establishes experimental requirements for the design of polymeric chains with controlled sequence of functionalities, which balance precise control of structure with simplicity of synthesis.
Synergistic Effects of Compartmentalization and Nitroxide Exit/Entry in Nitroxide-Mediated Radical Polymerization in Dispersed Systems
Publisher: American Chemical Society (ACS)
Date: 21-05-2012
DOI: 10.1021/MZ3001786
Abstract: Modeling and simulations of compartmentalization effects in tandem with nitroxide exit and entry have been performed for the nitroxide-mediated radical polymerization (NMP) of styrene in an aqueous dispersed system employing 2,2,6,6-tetramethylpiperidinyl-1-oxy (TEMPO) at 125 °C. It is demonstrated that, even for a relatively water-insoluble nitroxide like TEMPO, exit and entry can strongly influence the polymerization kinetics in submicrometer-size droplets articles. In such systems, the polymerization is expected to proceed at a markedly higher rate than the corresponding bulk system at the expense of control/livingness. Depending on the deactivator water solubility, these findings will apply qualitatively to all controlled/living radical polymerization systems governed by the persistent radical effect [e.g., NMP and atom transfer radical polymerization (ATRP)].
Addition‐Fragmentation Chain Transfer to Polymer in the Free Radical Ring‐Opening Polymerization of an Eight‐membered Cyclic Allylic Sulfide Monomer
Publisher: Wiley
Date: 14-02-2005
Effect of Monomer Loading and Pressure on Particle Formation in Nitroxide-Mediated Precipitation Polymerization in Supercritical Carbon Dioxide
Publisher: American Chemical Society (ACS)
Date: 18-11-2009
DOI: 10.1021/MA9022179
Atom Transfer Radical Polymerization of iso‐Butyl Methacrylate in Microemulsion with Cationic and Non‐Ionic Emulsifiers
Publisher: Wiley
Date: 04-12-2007
High-temperature propagation and termination kinetics of styrene to high conversion investigated by electron paramagnetic resonance spectroscopy
Publisher: Wiley
Date: 04-2004
SAXS Analysis of Shell Formation During Nanocapsule Synthesis via Inverse Miniemulsion Periphery RAFT Polymerization
Publisher: Wiley
Date: 17-04-2015
Abstract: Currently available methods for synthesis of polymeric nanocapsules only offer limited control over the shell thickness, even though it is an important parameter for various applications. Furthermore, suitable methods to critically measure this parameter in a facile way are still nonexistent. Here, lab-scale small-angle X-ray scattering (SAXS) is utilized to in situ measure the evolution of shell thickness during nanocapsule synthesis via inverse miniemulsion periphery reversible addition-fragmentation chain transfer (RAFT) polymerization (IMEPP). The measured shell thickness is consistent with estimates from the commonly used transmission electron microscopy (TEM) technique. Moreover, the in idual thicknesses of two concentric shells comprising different polymeric materials (the outer shell formed via IMEPP chain extension of the inner shell) can be determined, thus further demonstrating the versatility of this approach.
Nitroxide-mediated radical polymerization in microemulsion
Publisher: Wiley
Date: 04-12-2007
Reactivities of ω‐Unsaturated Methacrylate Oligomers toward tert‐Butoxy Radicals: Investigation of the Effect of Degree of Polymerization and Ester Alkyl Group
Publisher: Wiley
Date: 10-2003
Rapid Oxygen Tolerant Aqueous RAFT Photopolymerization in Continuous Flow Reactors
Publisher: American Chemical Society (ACS)
Date: 07-02-2019
Controlled/living radical polymerization in nanoreactors: compartmentalization effects
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C0PY00247J
Interfacial crosslinking of self‐assembled triblock copolymer nanoparticles via alkoxysilane hydrolysis and condensation
Publisher: Wiley
Date: 28-12-2018
DOI: 10.1002/POLA.29313
Macromonomer Synthesis Using Oligomers of ω-Unsaturated Methacrylate as Addition−Fragmentation Chain Transfer Agents: Increased Efficiency by Manipulation of Steric Hindrance
Publisher: American Chemical Society (ACS)
Date: 02-03-2004
DOI: 10.1021/MA0352734
Block copolymer synthesis by controlled/living radical polymerisation in heterogeneous systems
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6CS00253F
Abstract: We review the range of CLRP-controlled syntheses of block copolymer particles in dispersed systems, which are being exploited to create new opportunities for the design of nanostructured soft materials.
Rapid and quantitative one-pot synthesis of sequence-controlled polymers by radical polymerization
Publisher: Springer Science and Business Media LLC
Date: 30-09-2013
DOI: 10.1038/NCOMMS3505
Abstract: A long-standing challenge in polymer chemistry has been to prepare synthetic polymers with not only well-defined molecular weight, but also precisely controlled microstructure in terms of the distribution of monomeric units along the chain. Here we describe a simple and scalable method that enables the synthesis of sequence-controlled multiblock copolymers with precisely defined high-order structures, covering a wide range of functional groups. We develop a one-pot, multistep sequential polymerization process with yields >99%, giving access to a wide range of such multifunctional multiblock copolymers. To illustrate the enormous potential of this approach, we describe the synthesis of a dodecablock copolymer, a functional hexablock copolymer and an icosablock (20 blocks) copolymer, which represents the largest number of blocks seen to date, all of very narrow molecular weight distribution for such complex structures. We believe this approach paves the way to the design and synthesis of a new generation of synthetic polymers.
Effects of storage and service on tire performance: Oil component content and swelling behavior
Publisher: Rubber Division, ACS
Date: 05-2003
DOI: 10.5254/1.3547757
Abstract: In order to investigate the effects of storage and service on passenger car tire performance, two separate sets of s les were characterized: (i) tires stored at a temperature of 45–50 °C for different time periods, and (ii) used tires of different mileage. The tires were analyzed with respect to the performance of the tread rubber as manifested in the modulus at 200% elongation, the tensile strength at break, the elongation at break, the hardness, the viscoelasticity of the rubber, swelling, and the oil component content. The change in the properties of the tires as functions of increasing storage time and mileage indicated a marked deterioration in performance. The rate of change in these properties was found to be markedly enhanced by the extra stimuli provided by service, as demonstrated by comparing tires of similar age but different mileage. The results were analyzed and rationalized in terms of the change in the degree of crosslinking and transfer of oil components from the tread rubber to the inner part of the tire or to the surroundings.
Improved Control in Nitroxide-Mediated Radical Polymerization Using Supercritical Carbon Dioxide
Publisher: American Chemical Society (ACS)
Date: 03-2008
DOI: 10.1021/MA702645B
Self‐assembly of block copolymers with an alkoxysilane‐based core‐forming block: A comparison of synthetic approaches
Publisher: Wiley
Date: 21-11-2017
DOI: 10.1002/POLA.28911
Exploitation of Compartmentalization in RAFT Miniemulsion Polymerization to Increase the Degree of Livingness
Publisher: Wiley
Date: 05-02-2019
DOI: 10.1002/POLA.29329
RAFT inverse miniemulsion periphery polymerization in binary solvent mixtures for synthesis of nanocapsules
Publisher: Elsevier BV
Date: 12-2015
RAFT Emulsion Polymerization: MacroRAFT Agent Self-Assembly Investigated Using a Solvachromatic Dye
Publisher: American Chemical Society (ACS)
Date: 19-06-2020
Large Hexosomes from Emulsion Droplets: Particle Shape and Mesostructure Control
Publisher: American Chemical Society (ACS)
Date: 15-10-2018
DOI: 10.1021/ACS.LANGMUIR.8B02638
Abstract: Soft, rotationally symmetric particles of dispersed hexagonal liquid crystalline phase are produced using a method previously developed for cubosome microparticle production. The technique forms hexosome particles via removal of ethanol from emulsion droplets containing monoolein, water, and one of the various hydrophobic molecules: vitamin E, hexadecane, oleic acid, cyclohexane, or inylbenzene. The unique rotational symmetry of the particles is characterized by optical microscopy and small-angle X-ray scattering to link particle phase, shape, and structure to composition. Rheology of the soft particles can be varied independently of shape, enabling control of transport, deformation, and biological response by controlling composition and molecular structure of the additives. The direct observations of formation, and the resultant hexosome shapes, link the particle-scale and mesoscale properties of these novel self-assembled particles and broaden their applications. The micron-scale hexosomes provide a route to understanding the effects of particle size, crystallization rate, and rheology on the production of soft particles with liquid crystalline structure and unique shape and symmetry.
RAFT dispersion polymerization induced self-assembly (PISA) of boronic acid-substituted acrylamides
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2PY00530A
Abstract: For the unprotected monomer, the boroxine core of nanoparticles allows transitions to higher order morphologies, while worms and vesicles are yielded directly from PISA of the pinacol ester-protected monomer.
Free radical polymerization of acrylonitrile: mass spectrometric identification of the nitroxide-trapped oligomers formed in and estimated rate constants for each of the first eight propagation steps
Publisher: American Chemical Society (ACS)
Date: 11-1999
DOI: 10.1021/MA9910078
Aqueous RAFT polymerization-induced self-assembly (PISA): amphiphilic macroRAFT self-assembly vs. monomer droplet nucleation (miniemulsion polymerization)
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D2PY01425D
Abstract: The effect of monomer droplet size on the particle formation mechanism in aqueous heterogeneous polymerization using a hydrophilic macroRAFT agent has been investigated.
Synthesis of multi-block copolymer stars using a simple iterative Cu(0)-mediated radical polymerization technique
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C1PY00384D
Abstract: A new iterative copper(0)-mediated radical polymerization approach is presented that represents a significant advance in the synthesis of high order multi-block star copolymers. The synthesis of these materials can now be achieved in high yield and with controlled structural complexity, with purification only required at the last step. The approach is general, facile and offers the opportunity to synthesize new copolymer stars.
Synthesis of Highly Stretchable and Electrically Conductive Multiwalled Carbon Nanotube/Polymer Nanocomposite Films
Publisher: American Chemical Society (ACS)
Date: 02-03-2022
Particle formation mechanism in radical polymerization in miniemulsion based on in situ surfactant formation without high energy homogenization
Publisher: Elsevier BV
Date: 09-2011
RAFT polymerization under microwave irradiation: Toward mechanistic understanding
Publisher: American Chemical Society (ACS)
Date: 17-02-2011
DOI: 10.1021/MA102689D
Polymerization‐Induced Self‐Assembly under Compressed CO2: Control of Morphology Using a CO2‐Responsive MacroRAFT Agent
Publisher: Wiley
Date: 02-09-2018
Abstract: Polymerization-induced self-assembly of 2-hydroxypropyl methacrylate is conducted in water and water/MeOH using a CO
Compartmentalization in nitroxide-mediated radical polymerization in dispersed systems
Publisher: American Chemical Society (ACS)
Date: 22-11-2006
DOI: 10.1021/MA060841B
Quantification of spontaneous initiation in radical polymerization of styrene in aqueous miniemulsion at high temperature
Publisher: Elsevier BV
Date: 02-2008
Effects of Laplace pressure on propagation and termination in aqueous heterogeneous free radical polymerization
Publisher: Wiley
Date: 12-01-2006
Miniemulsion photopolymerization in a continuous tubular reactor: particle size controlviamembrane emulsification
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0PY00654H
Abstract: Synthesis of polymeric nanoparticles of adjustable size in the submicron-range 200–950 nm has been conducted via membrane emulsification combined with photoinduced miniemulsion polymerization in a continuous tubular flow reactor.
Addition-fragmentation chain transfer: Molecular weight distributions and retardation in the system methyl methacrylate/methyl alpha-(bromomethyl)acrylate
Publisher: Wiley
Date: 21-04-2004
DOI: 10.1002/POLA.20127
Synthesis of polystyrene nanoparticles "armoured" with nanodimensional graphene oxide sheets by miniemulsion polymerization
Publisher: Wiley
Date: 14-09-2013
DOI: 10.1002/POLA.26341
Core–shell and gradient morphology polymer particles analyzed by X‐ray photoelectron spectroscopy: Effect of monomer feed order
Publisher: Wiley
Date: 15-05-2017
DOI: 10.1002/POLA.28644
Successful Miniemulsion ATRP Using an Anionic Surfactant: Minimization of Deactivator Loss by Addition of a Halide Salt
Publisher: American Chemical Society (ACS)
Date: 07-09-2014
DOI: 10.1021/MA501379Q
Rate-Enhanced Nitroxide-Mediated Miniemulsion Polymerization
Publisher: American Chemical Society (ACS)
Date: 06-2012
DOI: 10.1021/MZ300213J
Abstract: A novel approach is presented whereby nitroxide-mediated radical polymerization (NMP) is conducted in an aqueous heterogeneous system at an initial polymerization rate an order of magnitude greater than the corresponding bulk system, accompanied by an improvement in the level of control over the molecular weight distribution. NMP of styrene mediated by
Confined polymerisation of bis-thyminyl monomers within nanoreactors: towards molecular weight control
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0PY00523A
Abstract: Controlling polymer molecular weight by topochemical polymerisation inside nanoreactors.
An Innovative Approach to Implementation of Organotellurium-Mediated Radical Polymerization (TERP) in Emulsion Polymerization
Publisher: American Chemical Society (ACS)
Date: 17-06-2015
Nitroxide‐Mediated Radical Polymerization of N‐tert‐Butylacrylamide
Publisher: Wiley
Date: 27-11-2008
Ambient-Temperature Waterborne Polymer/rGO Nanocomposite Films: Effect of rGO Distribution on Electrical Conductivity.
Publisher: American Chemical Society (ACS)
Date: 20-11-2019
Abstract: Electrically conductive polymer/rGO (reduced graphene oxide) films based on styrene and
Multisegmented polymers via step-growth and RAFT miniemulsion polymerization
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1PY01163D
Abstract: We report a method to efficiently prepare multisegmented polymers via a combination of step-growth (SG) and reversible addition-fragmentation chain transfer (RAFT) polymerization.
Optimization of the RAFT polymerization conditions for the in situ formation of nano-objects via dispersion polymerization in alcoholic medium
Publisher: Royal Society of Chemistry (RSC)
Date: 17-09-0006
DOI: 10.1039/C4PY00855C
Synthesis of microcapsules using inverse emulsion periphery RAFT polymerization via SPG membrane emulsification
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6PY01584K
Abstract: Synthesis of polymeric capsules with good control over the particle size and size distribution is demonstrated via a novel approach involving SPG membrane emulsification.
Biocompatible Glycopolymer Nanocapsules via Inverse Miniemulsion Periphery RAFT Polymerization for the Delivery of Gemcitabine
Publisher: American Chemical Society (ACS)
Date: 25-06-2015
DOI: 10.1021/ACS.BIOMAC.5B00545
Abstract: Encapsulation of hydrophilic cancer drugs in polymeric nanocapsules was achieved in a one-pot process via the inverse miniemulsion periphery RAFT polymerization (IMEPP) approach. The chosen guest molecule was gemcitabine hydrochloride, which is used as the first-line treatment of pancreatic cancer. The resulting nanocapsules were confirmed to be ∼200 nm, with excellent encapsulation (∼96%) and loading (∼12%) efficiency. Postpolymerization reaction was successfully conducted to create glyocopolymer nanocapsules without any impact on the loads as well as the nanocapsules size or morphology. The loaded nanocapsules were specifically designed to be responsive in a reductive environment. This was confirmed by the successful disintegration of the nanocapsules in the presence of glutathione. The gemcitabine-loaded nanocapsules were tested in vitro against pancreatic cancer cells (AsPC-1), with the results showing an enhancement in the cytotoxicity by two fold due to selective accumulation and release of the nanocapsules within the cells. The results demonstrated the versatility of IMEPP as a tool to synthesize functionalized, loaded-polymeric nanocapsules suitable for drug-delivery application.
Revised insights into templating radical polymerization within nanoreactors
Publisher: Wiley
Date: 26-02-2017
DOI: 10.1002/POLA.28538
Chain transfer to solvent in the radical polymerization of N‐isopropylacrylamide
Publisher: Wiley
Date: 03-2011
DOI: 10.1002/POLA.24612
A new paradigm in polymerization induced self-assembly (PISA): Exploitation of non-living addition-fragmentation chain transfer (AFCT) polymerization
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7PY00998D
Abstract: Polymerization-induced self-assembly (PISA) is conducted based on “non-living” radical dispersion polymerization in the form of addition–fragmentation chain transfer (AFCT) polymerization.
Effects of the oil-water interface on network formation in nanogel synthesis using nitroxide-mediated radical copolymerization of styrene/divinylbenzene in miniemulsion
Publisher: Elsevier BV
Date: 11-2009
Cu(0)-mediated controlled/living radical polymerization: A tool for precise multiblock copolymer synthesis
Publisher: American Chemical Society
Date: 2014
Alcohol-based PISA in batch and flow: exploring the role of photoinitiators
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9PY00166B
Abstract: Polymerization-induced self-assembly (PISA) via PhotoRAFT (photoinduced reversible addition–fragmentation radical transfer) was investigated in polar solvents via continuous flow reactors.
RAFT polymerization in supercritical carbon dioxide based on an induced precipitation approach: Synthesis of 2-ethoxyethyl methacrylate/acrylamide block copolymers
Publisher: Wiley
Date: 13-05-2015
DOI: 10.1002/POLA.27688
Influence of Polymer Matrix on Polymer/Graphene Oxide Nanocomposite Intrinsic Properties
Publisher: American Chemical Society (ACS)
Date: 16-09-2021
Hollow hybrid polymer-graphene oxide nanoparticles via Pickering miniemulsion polymerization
Publisher: Royal Society of Chemistry (RSC)
Date: 30-06-2014
DOI: 10.1039/C4NR01175A
Abstract: The preparation of hybrid hollow capsules consisting of a cross-linked polymer shell and a coating of graphene oxide (GO) is demonstrated. The capsules are prepared by Pickering miniemulsion polymerization, exploiting the surface activity of GO for its use as a colloidal surfactant. This approach represents a simple and convenient route towards hollow carbon nanostructures for a variety of applications. The incorporation of surface-modified TiO2 nanoparticles into the interior of these capsules was also demonstrated.
Structural Complexity of Graphene Oxide: The Kirigami Model
Publisher: American Chemical Society (ACS)
Date: 02-04-2021
Determination of the propagation rate coefficient of vinyl pivalate based on EPR quantification of the propagating radical concentration
Publisher: Wiley
Date: 11-09-2007
New aspects of unsaturated polyester resin synthesis. Part 1: Modelling and simulation of reactant sequence length distributions in stepwise polymerization
Publisher: Wiley
Date: 2003
DOI: 10.1002/PI.1040
TG-FTIR studies on biodegradable polyurethanes containing mono- and disaccharide components
Publisher: Elsevier BV
Date: 07-1996
Prevention of rubber degradation by use of microencapsulated antioxidants
Publisher: Rubber Division, ACS
Date: 09-2003
DOI: 10.5254/1.3547783
Abstract: A new approach of preventing evaporation and migration of antioxidants in rubber is presented. The antioxidant N-1,3-dimethylbutyl-N'-phenyl-p-phenylenediamine (6PPD) was microencapsulated in silica (MC6PPD) prior to compounding with the rubber. The microencapsulated antioxidants were characterized by differential scanning calorimetry and thermogravimetric analysis, indicating reduced rates of evaporation compared to free antioxidant. The stress-strain properties, flex cracking resistance and discoloration of the rubber were examined as s les containing equal amounts of antioxidant but in the different forms of 6PPD and MC6PPD. The results clearly indicated superior rubber performance in the case of MC6PPD, suggesting that antioxidant encapsulation is an effective technique to prevent rubber degradation due to aging.
Nano-Engineered Multiblock Copolymer Nanoparticles via Reversible Addition-Fragmentation Chain Transfer Emulsion Polymerization
Publisher: American Chemical Society (ACS)
Date: 03-04-2019
Preparation of Macromonomers by Copolymerization of Methyl Acrylate Dimer Involving β Fragmentation
Publisher: Wiley
Date: 16-12-2004
DOI: 10.1002/POLA.10803
Nitroxide‐Mediated Radical Dispersion Polymerization of Styrene in Supercritical Carbon Dioxide Using a Poly(dimethylsiloxane‐block‐styrene) Alkoxyamine as Initiator and Stabilizer
Publisher: Wiley
Date: 31-08-2006
Miniemulsion polymerization of styrene using carboxylated graphene quantum dots as surfactant
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0PY00404A
Abstract: Carboxylated graphene quantum dots (cGQDs) were synthesized from dextrose and sulfuric acid via a hydrothermal process, and subsequently used as sole surfactant in miniemulsion polymerization of styrene.
Nitroxide-mediated radical polymerization in miniemulsion at stationary state: Rationale for independence of polymerization rate on nitroxide partitioning using oil-phase initiation
Publisher: Wiley
Date: 10-08-2005
Nitroxide-mediated radical polymerization of styrene: Experimental evidence of chain transfer to monomer
Publisher: Elsevier BV
Date: 10-2006
Radical polymerization of CO2‐induced emulsions: A novel route to polymeric nanoparticles
Publisher: Wiley
Date: 28-07-2011
DOI: 10.1002/POLA.24875
Polymer film synthesis from an aqueous latex of polymerization-induced self-assembly (PISA) derived nanofibers
Publisher: Elsevier BV
Date: 07-2023
Expanding the Scope of RAFT Multiblock Copolymer Synthesis Using the Nanoreactor Concept: The Critical Importance of Initiator Hydrophobicity
Publisher: American Chemical Society (ACS)
Date: 03-03-2022
Polymerization of cubosome and hexosome templates to produce complex microparticle shapes
Publisher: Elsevier BV
Date: 06-2019
DOI: 10.1016/J.JCIS.2019.03.069
Abstract: Cubic and hexagonal liquid crystalline particles, or cubosomes and hexosomes, are used as templates to polymerize various monomers to produce particles with unique micron-scale geometric shapes. Emulsion droplets containing water, ethanol, and the lipid glyceryl monooleate are suspended in a yield stress fluid and used to produce shapes based on cubic and hexagonal symmetry by slow crystallization. The underlying liquid crystalline ordering of the aqueous lipid system drives symmetric shape formation, while its hiphilicity allows incorporation of various organic monomers. Photopolymerization of monomers in the lipid templates creates polymeric particles shaped like polyhedra based on cubic symmetry as well as biconical cylinders based on hexagonal symmetry, and their shape is preserved after template removal. Product particle shapes are controlled by varying the structures and hydrophobicity of the monomers, as they control formation of different phases and microstructures. Monomer polarity determines whether the template can exhibit hexagonal phase, as when inylbenzene is used, or cubic phase, when di(ethylene glycol) dimethacrylate is used. The monomers also control the microstructure of the final particles produced, forming rigid shapes composed of linked polymer nanospheres when inylbenzene or di(ethylene glycol) dimethacrylate are used, and soft hydrogel particles when N,N'-methylenebisacrylamide is used.
Atom Transfer Radical Polymerization in Miniemulsion: Partitioning Effects of Copper(I) and Copper(II) on Polymerization Rate, Livingness, and Molecular Weight Distribution
Publisher: American Chemical Society (ACS)
Date: 27-03-2007
DOI: 10.1021/MA062786C
Chain transfer and efficiency of end-group introduction in free radical polymerization of methyl methacrylate in the presence of poly(methyl methacrylate) macromonomer
Publisher: Wiley
Date: 02-11-2004
Scalable Aqueous Reversible Addition–Fragmentation Chain Transfer Photopolymerization-Induced Self-Assembly of Acrylamides for Direct Synthesis of Polymer Nanoparticles for Potential Drug Delivery App
Publisher: American Chemical Society (ACS)
Date: 16-05-2019
Synthesis of Complex Macromolecules Using Iterative Copper(0)-Mediated Radical Polymerization
Publisher: Wiley
Date: 12-05-2014
DOI: 10.1002/POLA.27220
Synthesis of fluorinated alkoxyamines and alkoxyamine-initiated nitroxide-mediated precipitation polymerizations of styrene in supercritical carbon dioxide
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4PY00757C
Abstract: The first controlled/living precipitation NMP in supercritical carbon dioxide in the absence of nitroxide and comparisons with fluorinated alkoxyamines.
Network formation in nitroxide-mediated radical copolymerization of styrene and divinylbenzene in miniemulsion: Effect of macroinitiator hydrophilicity
Publisher: Elsevier BV
Date: 03-2009
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