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  • RAFT
  • Herein we exemplify the latter approach by reporting the convenient one-pot synthesis of high molecular weight poly(glycerol monomethacrylate) (PGMA) via the reversible addition−fragmentation chain transfer (RAFT) aqueous emulsion polymerization of a water-immiscible protected monomer precursor, isopropylideneglycerol methacrylate (IPGMA) at 70 °C, using a water-soluble poly(glycerol monomethacrylate) (PGMA) chain transfer agent as a steric stabilizer. (whiterose.ac.uk)
  • Moreover, it is shown that this latex precursor route offers an important advantage compared to the RAFT aqueous solution polymerization of glycerol monomethacrylate since it provides a significantly faster rate of polymerization (and hence higher monomer conversion) under comparable conditions. (whiterose.ac.uk)
  • Herein, a new method of one-pot synthesis of the colloid-like metal/block-copolymer nanocomposites of poly(4-vinylpyridine)- block -polystyrene (P4VP- b -PS) and Ag nanoparticles by dispersion RAFT polymerization is proposed. (rsc.org)
  • This method employs the chelate polymer of poly(4-vinylpyridine) trithiocarbonate (P4VP-TTC) as both a macro-RAFT agent for dispersion RAFT polymerization and a stabilizer for Ag nanoparticles, and it affords a convenient synthesis of the Ag/P4VP- b -PS composite nanoparticles. (rsc.org)
  • This dispersion RAFT polymerization in the presence of a macro-RAFT agent stabilized metal nanoparticles is believed to be an efficient method to synthesize concentrated metal/block-copolymer nanocomposites. (rsc.org)
  • The reversible addition-fragmentation chain transfer (RAFT)-mediated polymerization of methyl methacrylate (MMA) and tributylsilyl methacrylate (TBSiMA) through the immobilized vinyl bond on the silk fibroin surface in the presence of 2-cyanoprop-2-yl dithiobenzoate (CPDB) as chain-transfer agent and 2,2′-azobis(isobutyronitrile) (AIBN) as initiator was conducted in toluene solution at 70°C for 24 h. (univ-tln.fr)
  • Hydrogel
  • Such a structure, as observed in the photo-rheology experiments, serves as a light-scattering source when the solution is illuminated by UV light, which provides a uniform polymerization of the hydrogel in three-dimension and reduces the curing time. (epfl.ch)
  • To investigate the biocompatibility and cytotoxicity of the Poly(HEMA-Am) hydrogel, we evaluated an in vitro cytotoxicity assay on human fibroblasts (hFBs) and human adipose-derived stem cells (hADSCs) with the hydrogel eluate, and confirmed a cell viability of over 80% of the cell viability with the Poly(HEMA-Am) hydrogel. (mdpi.com)
  • emulsion
  • The deficiency in the industry has been the inability to balance the necessary hydrophilicity for emulsion polymerization with ultimate resistance to water in the resulting polymer products. (google.com)
  • Functional monomers are often not stable to the conditions of polymerization in aqueous emulsion systems and are, therefore, unsuited for providing appropriate and desired physical and mechanical property development in the ultimate uses of the emulsion polymer products. (google.com)
  • copolymers
  • In combination with ring-opening polymerization, it also produces new amphiphilic copolymers which self-assemble into flower-like vesicles in water. (ac.be)
  • By adjusting the reaction conditions, including the molar ratio of PDO to the anhydroglucose unit (AGU), amount of DMAP, and reaction temperature and time, the structure of the graft copolymers could be altered, and a series of copolymers with molar substitutions (MSs) in the range of 1.09 to 6.97 and polymerization degrees (DPs) varying from 1.85 to 2.88 were obtained. (ncsu.edu)
  • molar
  • 34 However, control over the molar mass distributions (MMD) in this type of polymerisation is harder to achieve requiring much more precise regulation of the reaction parameters. (rsc.org)
  • For a co-polymerization using an equal molar mixture of butadiene and styrene, butadiene is consumed initially much more rapidly than the styrene. (google.com)
  • latexes
  • Semicontinuous heterophase polymerization of methyl and hexyl methacrylates to produce latexes with high nanoparticles content," Journal of Macromolecular Science, Part A: Pure and Applied Chemistry , vol. 51, no. 2, pp. 144-155, 2014. (hindawi.com)
  • processes
  • The experimental data sets produced established a theoretical basis for conducting scale up processes to efficiently produce larger quantities of poly(acrylic acid) delivered with good control over the molecular weight and dispersity. (rsc.org)
  • reaction
  • Effects of reaction time and quantity of BPO on the polymerization were investigated. (scientific.net)
  • Therefore generating a new free radical derived polymer necessitates time intensive screening of the various reaction parameters, ensuring consistency of the polymerisation process and enabling the targeting of specific molecular weights. (rsc.org)
  • Blends
  • S. Pivsa-Art, N. Srisawat, N. O-Charoen, S. Pavasupree and W. "Preparation of Knitting Socks from Poly (Lactic Acid) and Poly [(R)-3-Hydroxybutyrate-co-(R)-3-Hydroxyvalerate] (PHBV) Blends for Textile Industrials," Pivsa-Art: Energy Procedia, Vol. 9, pp. 589-597, 2011. (koreascience.or.kr)
  • nanoparticles
  • A. Graf, A. McDowell, and T. Rades, "Poly(alkycyanoacrylate) nanoparticles for enhanced delivery of therapeutics-is there real potential? (hindawi.com)
  • S. J. Douglas, L. Illum, and S. S. Davis, "Particle size and size distribution of poly(butyl 2-cyanoacrylate) nanoparticles. (hindawi.com)
  • S. K. Das, I. G. Tucker, D. J. T. Hill, and N. Ganguly, "Evaluation of poly(isobutylcyanoacrylate) nanoparticles for mucoadhesive ocular drug delivery. (hindawi.com)
  • In vivo / in vitro pharmacokinetic and pharmacodynamic study of spray-dried poly-(dl-lactic-co-glycolic) acid nanoparticles encapsulating rifampicin and isoniazid," International Journal of Pharmaceutics , vol. 444, no. 1-2, pp. 10-17, 2013. (hindawi.com)
  • properties
  • M. Ajioka, K. Enomoto, K. Suzuki and A. Yamaguchi, "The basic properties of poly(lactic acid) produced by the direct condensation polymerization of lactic acid," J. Envt. (koreascience.or.kr)
  • Among them, aliphatic polyesters synthesized by ring-opening polymerization (ROP) of lactones and lactides have a leading position due to their good mechanical properties, hydrolyzability and biocompatibility. (diva-portal.org)
  • study
  • Poly(acrylic acid) was selected for study as it has been extensively researched and its behaviour is well known yet it presents several challenges in its synthesis. (rsc.org)
  • various
  • 23-28 Indeed, several types of polymerisation have already been shown to benefit from the application of various flow processing techniques which have been comprehensively summarised in a few recommended review articles. (rsc.org)