Topic
Suspension polymerization
About: Suspension polymerization is a research topic. Over the lifetime, 6143 publications have been published within this topic receiving 74727 citations.
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TL;DR: In this paper, free radical polymerization was used to obtain polystyrene and poly(styrene-co-butadiene) with narrow polydispersity (1.19-1.36) in the presence of 2,2,6, 6,6-tetramethyl-1-piperidinyloxy using benzoyl peroxide as initiator
Abstract: Polystyrene and poly(styrene-co-butadiene) with narrow polydispersity (1.19-1.36) could be obtained by free radical polymerization in solution, bulk or suspension in the presence of 2,2,6,6-tetramethyl-1-piperidinyloxy using benzoyl peroxide as initiator
1,863 citations
TL;DR: In this article, a novel class of homogeneous nickel(II) catalysts, denoted as Ni(NCN)Br, is reported to mediate in the presence of activated alkyl halides, e.g., CCl4 or α-halocarbonyl compounds, and remarkably enough, poly(methyl methacrylate) (PMMA) with molecular weight up to at least 105 g/mol was synthesized in a controlled fashion.
Abstract: A novel class of homogeneous nickel(II) catalysts, i.e [Ni{o,o‘(CH2NMe2)2C6H3}Br], denoted as Ni(NCN‘)Br, is reported to mediate in the presence of activated alkyl halides, e.g., CCl4 or α-halocarbonyl compounds, a well-controlled radical polymerization of methacrylic monomers [methyl and n-butyl methacrylate), (MMA, n-BuMA)] at rather low temperatures (<100 °C). The number-average molecular weight of the polymer gradually increased with the monomer conversion and was inversely proportional to the initiator concentration of alkyl halides. The molecular weight distribution (MWD) remained very narrow during the whole course of the polymerization (MWD < 1.3). All the experimental data including a successful block copolymerization (n-BuMA-b-MMA) experiment were in agreement with a living polymerization process, and remarkably enough, poly(methyl methacrylate) (PMMA) with molecular weight up to at least 105 g/mol was synthesized in a controlled fashion. Increased thermal stability of the PMMA is a further indi...
544 citations
TL;DR: In this article, the most common methods allowing control of the radical polymerization, such as nitroxide-mediated polymerization and atom transfer radical polymerisation and reversible transfer, are presented in detail.
523 citations
TL;DR: A review of living/controlled radical polymerization (L/CRP) to aqueous dispersions, including miniemulsion, emulsion, and suspension, can be found in this paper.
500 citations
TL;DR: A methodological description of heterogeneous polymerization processes, including suspension, emulsion, dispersion, and precipitation polymerization, is presented in this paper, where the authors focus on the initial state of the polymerization mixture, mechanism of particle formation, and the shape and size of polymer particles produced in different heterogenous polymerization systems.
Abstract: A methodological description of heterogeneous polymerization processes, including suspension, emulsion, dispersion, and precipitation polymerization is presented. The discussion focuses on the initial state of the polymerization mixture, mechanism of particle formation, and the shape and size of polymer particles produced in different heterogeneous polymerization systems. The dependence of particle size and morphology on manufacturing parameters such as emulsifier, stabilizer, reactor design, and stirring speed is discussed. Special topics, including emulsifier-free (soapless) emulsion polymerization, seeded ponymerization, and the formation of core-shell particles are also briefly covered.
460 citations