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CopolymersPolymersEthylene glycolMethacrylateNanoparticlesMonomerRadical polymerizationCopolymerizationATRPAqueousThermoresponsiveMethylPolymerPolystyreneReversibleHydrophilicTrithiocarbonateMethacrylamideSolventSelf-assemblyPreparationNanocompositeSelective2019Acrylic acidTemperaturePhase separationVinylProcessBlockAgentsAgentChainsControlMolecular weights
Copolymers11
  • ATRP can also be used for the preparation of defined block copolymers of PVP, by polymerization of 4-acetoxystyrene that is subsequently selectively hydrolysed. (wikipedia.org)
  • A facile and versatile approach for preparing CO 2 -responsive graft copolymers via a grafting-to strategy that combines controlled radical polymerization with post-polymerization modification has been demonstrated. (rsc.org)
  • Subsequently, post-polymerization modification via active-ester amine chemistry, resulted in CO 2 -responsive graft copolymers with either homo-side chains or discrete multi-functional hetero side chains. (rsc.org)
  • Amphiphilic anionic and cationic graft copolymers possessing poly(2-hydroxyethyl methacrylate) (PHEMA) backbone and poly(methacrylic acid), poly(2-methoxyethyl acrylate-co-methacrylic acid), and poly(2-methoxyethyl acrylate-co-2-(dimethylamino)ethyl methacrylate) grafts are constructed by merging reversible addition-fragmentation chain transfer (RAFT) polymerization, copper-mediated atom transfer radical polymerization (ATRP), and a selective deprotection reaction. (dtu.dk)
  • The graft copolymers showed effective surface adsorption and lubrication for self-mated poly(dimethylsiloxane) (PDMS) contacts in physiological salt concentration. (dtu.dk)
  • In this article, poly(styrene-alt-maleic anhydride) copolymers were first prepared by RAFT polymerization and characterized by different analytical techniques. (ibmmpolymerbiomaterials.com)
  • For the amphiphilic graft copolymers based on poly(ethylene glycol), aggregation behavior in water was investigated. (ibmmpolymerbiomaterials.com)
  • Amphiphilic block copolymers composed of polystyrene and PIPAAm (St-IPAAms) were synthesized by reversible addition-fragmentation chain transfer (RAFT) radical polymerization. (pubchase.com)
  • The first results indicated a successful polymerization of the second polymer and show the potential of the current strategy to prepare block copolymers from the surface of the RAFT-modified QDs. (ua.pt)
  • Furthermore, block copolymers of PFMA with poly(ethylene glycol) methacrylate (PEGMA) as a biocompatible component were prepared. (iyte.edu.tr)
  • Poly(ɛ-caprolactone)-block-poly(methyl methacrylate)-block-poly[2-(tert-butylamino) ethyl methacrylate] (PCL-b-PMMA-b-PTA) triblock copolymers were synthesized using combined ring-opening and RAFT polymerizations, and then self-assembled into polycationic cylindrical micelles with controllable lengths by epitaxial growth. (birmingham.ac.uk)
Polymers6
  • For example, the aqueous dispersion RAFT polymerization allows one to obtain a colloidal solution only for a small number of water-soluble monomers which form insoluble polymers during polymerization [ 4 ]. (springer.com)
  • In this current research, two immiscible polymers, poly(methyl methacrylate) (PMMA) and poly(benzyl methacrylate) (PBzMA) with controlled molecular weight, bearing terminal furan-maleimide groups, are prepared via Reversible Addition-Fragmentation chain transfer (RAFT) polymerization. (aps.org)
  • In the second part, two classes of water soluble polymers were grafted on nanoparticles via surface-initiated RAFT polymerizations. (sc.edu)
  • Poly(2-oxazoline)s as smart bioinspired polymers. (mpg.de)
  • The aim of this work is to synthesize arginine-containing well-defined polymers via reversible addition-fragmentation chain transfer (RAFT) polymerization and perform preliminary investigation on the use of these polymers in nucleic acid complexation for potential gene therapy applications. (iyte.edu.tr)
  • The advancement in polymerization technologies has propelled the development of polymers with increasingly complex structures and properties, enabling novel research in the biomedical , energy, and electronic fields. (sigmaaldrich.com)
Ethylene glycol3
  • Then, the poly(styrene-alt-maleic anhydride) precursors were functionalized with primary amine such as azidopropylamine and amino poly(ethylene glycol). (ibmmpolymerbiomaterials.com)
  • This study describes the first example for shielding of a high performing terpolymer that consists of N-(2-hydroxypropyl)methacrylamide (HPMA), N-(3-guanidinopropyl)methacrylamide (GPMA), and N-(2-indolethyl)methacrylamide monomers (IEMA) by block copolymerization of a polyethylene glycol derivative - poly(nona(ethylene glycol)methyl ether methacrylate) (P(MEO9MA)) via reversible addition-fragmentation chain transfer (RAFT) polymerization. (tib.eu)
  • Then, the well-defined double hydrophilic block copolymer (DHBC), poly[oligo(ethylene glycol)methyl ether methacrylate]- b -poly[2-(3-(2-aminophenyl)ureido)ethyl methacrylate- co -4-(2-methylacryloyloxyethylamino)-7-nitro-2,1,3-benzoxadiazole)] (POEGMA- b -P(APUEMA- co -NBD)), was synthesized via sequential reversible addition-fragmentation chain transfer (RAFT) polymerization. (sioc-journal.cn)
Methacrylate5
  • Then, amino end-functionalized poly(2-(diethylamino)ethyl methacrylate) (PDEAEMA) known for its CO 2 responsiveness and hydrophobic poly(methyl methacrylate) (PMMA) were prepared via atom transfer radical polymerization (ATRP) as side blocks, respectively. (rsc.org)
  • These monomers consist of styrene, methyl acrylate, methyl methacrylate, vinyl acetate and isoprene, which have different activities and require different classes of RAFT agents to control the polymerizations. (sc.edu)
  • Soft matter nanoparticles exhibiting rich polymorphism with reactive pentafluorophenyl methacrylate (PFPMA) units in their coronae were prepared via non-polar reversible addition-fragmentation chain transfer dispersion polymerization and polymerization-induced self-assembly. (edu.au)
  • Poly(stearyl methacrylate-stat-PFPMA) macro-CTAs, containing up to 12 mol % PFPMA, were used in n-octane and n-tetradecane for the subsequent copolymerization of 3-phenylpropyl methacrylate. (edu.au)
  • Poly(stearyl methacrylate) (PSMA) homopolymers, prepared by RAFT radical polymerization, have been employed in the RAFT dispersion polymerization (RAFTDP) of 3-phenylpropyl methacrylate (PPMA) in n-tetradecane. (edu.au)
Nanoparticles7
  • It should be noted that limitations also apply to the choice of a polymeric RAFT agent, to which the role of a stabilizer of colloidal nanoparticles is uniquely assigned. (springer.com)
  • The synthesis of poly(vinylpyrrolidone) (PVP) grafted nanoparticles was confirmed by FTIR, TGA, 1H NMR and TEM. (sc.edu)
  • The synthesis of dye-labeled poly(methacrylic acid) (PMAA) grafted silica nanoparticles was studied with two methods. (sc.edu)
  • In the second method, surface-initiated RAFT polymerization of tert butylmethacrylate ( t BuMA) was conducted on dye-labeled CPDB coated silica nanoparticles followed by sequential removal of the thiocarbonylthio end groups and the tert -butyl moieties. (sc.edu)
  • Additionally, as a more straightforward strategy, direct polymerization of methacrylic acid on silica nanoparticles with a diameter size as small as 15 nm was conducted via the RAFT polymerization technique. (sc.edu)
  • PMAA brushes were prepared on the magnetic nanoparticles with an average diameter size as small as 10 nm via surface-initiated RAFT polymerization of methacrylic acid while maintaining good dispersibility in solutions. (sc.edu)
  • The direct synthesis of methacrylic-based soft polymeric nanoparticles via reversible addition-fragmentation chain transfer dispersion polymerization (RAFTDP) is described. (edu.au)
Monomer4
  • The polymerization kinetics, as well as the effects of initiator concentration and the ratio of monomer to CTM were studied. (nova.edu)
  • Linear increase in ln[M]0/[M] with polymerization time, and number average molecular weight (Mn) with monomer conversion indicated RAFT controlled polymerization of PFMA under the conditions tested. (iyte.edu.tr)
  • Polymer properties and performances are highly dependent on monomer types and the polymerization tools or methods used for the synthesis. (sigmaaldrich.com)
  • By adjusting the relative concentrations of solvent, monomer, and RAFT chain transfer agent, PAESO undergoes a series of both inter-molecular and intra-molecular reactions such that both molecular weight and chain architecture vary throughout the reaction. (researcher-app.com)
Radical polymerization8
Copolymerization1
  • Copolymerization was studied using both P(PFMA) and P(PEGMA) as macro RAFT agent. (iyte.edu.tr)
ATRP2
  • Initially, multifunctional ATRP macroinitiators based on PHEMA backbone are prepared by RAFT polymerization. (dtu.dk)
  • We offer a comprehensive portfolio of vinyl and norbornene monomers, RAFT agents, ATRP agents and NMP initiators for different types of controlled radical polymerizations. (sigmaaldrich.com)
Aqueous3
  • Aqueous solution behavior of thermoresponsive polyzwitterionic microgels based on poly(N-vinylca. (rwth-aachen.de)
  • Polymersomes constituting poly(N-2-hydroxypropylmethacrylamide)-b-poly(N-(2-(methylthio)ethyl)acrylamide) (PHPMAm-b-PMTEAM) are prepared by aqueous dispersion RAFT-mediated polymerization-induced self-assembly (PISA). (u-pec.fr)
  • Herein a highly unusual non-aqueous emulsion polymerization formulation is reported. (diamond.ac.uk)
Thermoresponsive4
  • Functional microspheres through crystallization of thermoresponsive poly(2-oxazoline)s. (mpg.de)
  • Thermoresponsive poly(N-isopropylacrylamide) (PIPAAm)-immobilized surfaces for controlling cell adhesion and detachment were fabricated by the Langmuir-Schaefer method. (pubchase.com)
  • A nonionic double hydrophilic block copolymer with a long permanently hydrophilic and a small thermoresponsive block is synthesized by reversible addition-fragmentation chain-transfer polymerization (RAFT). (tu-berlin.de)
  • The other end attached to the thermoresponsive block of poly(N-isopropylacrylamide) pNiPAm incorporates a coumarin fluorophore. (tu-berlin.de)
Methyl1
  • Poly(N-isopropylacrylamide) with two chain lengths (MW: ca. 5000, and ca. 20 000 g mol -1 ) was synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization, using 2-dodecylsulfanylthiocarbonylsulfanyl-2-methyl propionic acid as the chain transfer agent. (elsevierpure.com)
Polymer6
  • Reversible addition-fragmentation chain transfer (RAFT) polymerization and a toolbox of surface functionalization from the simple to the advanced were developed to prepare the polymer nanomaterials. (sc.edu)
  • MADIX agents and trithiocarbonate RAFT agents containing the similar R groups generated polystyrene with a high PDI (~2.0) and a low PDI (~ 1.1) respectively with control over the polymer molecular weights. (sc.edu)
  • Herein, we report the synthesis of quantum dots (QDs)/polymer nanocomposites by reversible addition-fragmentation chain transfer (RAFT) polymerization in miniemulsions using a grafting from approach. (ua.pt)
  • However, advances in polymerization methods, emulsion science and technology, new organic-inorganic hybrid systems, as well as principles of nanotechnology and self‐assembly can lead to robust multifunctional polymer coatings with strong technological implications. (mdpi.com)
  • Polymerization is a chemical reaction of monomers to form polymer chains or networks. (sigmaaldrich.com)
  • In this article we demonstrate the role of chain architecture on the relaxation dynamics of poly(acrylated epoxidized soybean oil) (PAESO), a hyperbranched polymer, with a particular focus on the role played by intramolecular loops. (researcher-app.com)
Polystyrene2
  • Poly(4-vinylphenol), also called polyvinylphenol or PVP, is a plastic structurally similar to polystyrene. (wikipedia.org)
  • Using a free radical initiator (AIBN) to activate the RAFT process, a polystyrene (PS) block was grafted from the surface of the QDs. (ua.pt)
Reversible5
  • At present, one of the simplest and most affordable methods for preparing such a colloidal solution is heterophase-controlled polymerization occurring by the reversible addition−fragmentation chain transfer ( RAFT ) mechanism, which makes it possible to simultaneously control the molecular characteristics of the synthesized block copolymer and tune the size and morphology of the resulting micelles in the nanoscale. (springer.com)
  • A well-defined poly( N , N -dimethylacrylamide- co -pentafluorophenyl acrylate) (P(DMA- co -PFPA)) was synthesized by reversible addition fragmentation chain transfer (RAFT) polymerization bearing reactive pentafluorophenyl esters as grafting sites on a hydrophilic backbone. (rsc.org)
  • We report the first synthesis of hyperbranched poly( N -(2-hydroxypropyl) methacrylamide) (HB-PHPMA) using reversible addition-fragmentation chain transfer (RAFT) self-condensing vinyl polymerization (SCVP). (nova.edu)
  • α-Glutathione (GSH), ω-biotin functionalized poly(N-isopropylacrylamide) (PNIPAAm) was synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerization using a new R-group allyl functionalized trithiocarbonate chain transfer agent (CTA) and thiol-ene reactions. (iyte.edu.tr)
  • PAESO is produced by reversible addition-fragmentation chain transfer (RAFT) polymerization from acrylated epoxidized soybean oil (AESO) containing an average of 2.6 polymerizable acrylic moieties per trigylceride. (researcher-app.com)
Hydrophilic1
  • The end group attached to the permanently hydrophilic block of poly(N,N-dimethylacrylamide) pDMAm is designed as a permanently hydrophobic segment ("sticker") comprising a long alkyl chain and the 4-aminonaphthalimide fluorophore. (tu-berlin.de)
Trithiocarbonate2
  • The homophase polymerization of acrylic acid is carried out in a solution of poly(butyl acrylate) trithiocarbonate (PBATC) in a mixed solvent 2-propanol-water. (springer.com)
  • In the first part (Chapter 2), a variety of RAFT agents (xanthate, dithiocarbamate and trithiocarbonate) were used to mediate the polymerizations of several classes of free radical polymerizable monomers. (sc.edu)
Methacrylamide2
  • Hyperbranched Poly(N-(2-hydroxypropyl) methacrylamide) via RAFT Self-C" by Jawaher A. Alfurhood, Hao Sun et al. (nova.edu)
  • Moreover, a fluorescently labeled analogue of P(MEO9MA), bearing perylene monoimide methacrylamide (PMIM), is introduced as a comonomer in RAFT polymerization. (tib.eu)
Solvent2
  • The homophase polymerization of AA in the three-component system at 70°C, in which the mixed solvent with respect to PBATC is similar in thermodynamic quality to the θ-solvent at 22°, yields solutions of the narrowly dispersed block copolymer butyl acrylate-acrylic acid. (springer.com)
  • In particular, in dispersion RAFT polymerization it is often difficult to choose a selective solvent in which all reagents are readily soluble but which is selective with respect to the blocks of the synthesized block copolymer. (springer.com)
Self-assembly2
  • Self-assembly of poly(2-alkyl-2-oxazoline)s by crystallization in ethanol-water mixtures below the upper critical solution temperature. (mpg.de)
  • Polymerization-induced self-assembly (PISA) is widely recognized to be a powerful technique for the preparation of diblock copolymer nano-objects in various solvents. (diamond.ac.uk)
Preparation1
  • However, either the use of these solvents is not economical or they do not fully meet requirements of the polymerization preparation of the colloidal solution. (springer.com)
Nanocomposite2
  • Quantum confinement effects were identified for the nanocomposite obtained, so attesting to the integrity of the QDs after the polymerization. (ua.pt)
  • After isolating the nanocomposite particles, a second poly(n-butyl acrylate) block was tentatively grown from the initial PS block. (ua.pt)
Selective1
  • Molecularly Imprinted Poly-4-vinylphenol can be produced for the selective electrochemical detection of small molecules, such as cotinine or nicotine. (wikipedia.org)
20191
  • J Polym Sci Poly Chem 2019 , 57 (18), 1956-1963. (jia-lab.com)
Acrylic acid1
Temperature1
Phase separation1
  • Mechanistic study of the phase separation/crystallization process of poly(2-isopropyl-2-oxazoline) in hot water. (mpg.de)
Vinyl1
  • A dithiocarbamate RAFT agent exhibited excellent control over the polymerization of vinyl acetate. (sc.edu)
Process1
  • Despite the fact that water and alcohols are the most popular media for the heterophase RAFT process, many attempts have recently been made to search for new solvents. (springer.com)
Block1
  • The problem can be solved by obtaining a colloidal solution of a block copolymer in a medium in which a homophase solution is formed at elevated temperatures of polymerization. (springer.com)
Agents2
  • RAFT agents containing the tertiary and α-EWG R groups demonstrated excellent control over the molecular weights with little effect on the PDIs. (sc.edu)
  • In addition, trithiocarbonates were used as thermally stable RAFT agents that could mediate the polymerization of isoprene with predictable molecular weights. (sc.edu)
Agent1
  • A new RAFT agent, 4-cyanopentanoic acid N-pyrroledithiocarboxylate (CPDC) was invented for mediating the polymerization of N-vinylpyrrolidone. (sc.edu)
Chains1
Control1
  • GPC and 1H NMR results indicated that the allyl group had no adverse effect on the RAFT-controlled polymerization of NIPAAm and PEG-A, and the new CTA could efficiently control the polymerizations. (iyte.edu.tr)
Molecular weights2
  • In this study, seven PolyILs were synthesized having degrees of polymerization ranging from 1 to 333, corresponding to molecular weights (MW) from 482 to 160 400 g/mol. (osti.gov)
  • Discover our selection of polyethylene glycol (PEGs) and PEG derivatives in a wide range of molecular weights for all your PEGylation needs and applications. (sigmaaldrich.com)