Kinetics of RAFT Emulsion Polymerization of Styrene Mediated by Oligo(Acrylic Acid-b-Styrene) Trithiocarbonate

被引：13

作者：

Yan, Kun ^{[1
]}

Gao, Xiang ^{[1
]}

Luo, Yingwu ^{[1
]}

机构：

[1] Zhejiang Univ, Coll Chem & Biol Engn, State Key Lab Chem Engn, 38 Zhe Da Rd, Hangzhou 310027, Zhejiang, Peoples R China

来源：

AICHE JOURNAL | 2016年 / 62卷 / 06期

基金：

国家杰出青年科学基金;

关键词：

reversible addition-fragmentation chain transfer (RAFT) polymerization; emulsion polymerization; polymerization kinetics; radical polymerization; LIVING RADICAL POLYMERIZATION; FRAGMENTATION CHAIN TRANSFER; MOLECULAR-WEIGHT DISTRIBUTION; AMPHIPHILIC BLOCK-COPOLYMERS; THERMAL POLYMERIZATION; PARTICLE-SIZE; POLY(ACRYLIC ACID); MINIEMULSION; POLYSTYRENE; WATER;

D O I：

10.1002/aic.15199

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The kinetics of ab initio reversible addition:fragmentation chain transfer (RAFT) emulsion polymerization of styrene using oligo(acrylic acid-b-styrene) trithiocarbonate as both polymerization mediator and surfactant were systematically investigated. The initiator concentration was set much lower than that in the conventional emulsion polymerization to significantly suppress the irreversible termination reaction. It was found that n decreased rapidly but the nucleation efficiency of micelles increased with the decrease of the initiator concentrations due to the significant radical exit. The particle number (iVp) did not follow the classic Smith Sward equation but was proportional to [1]-0.4 [st. It was suggested that RAFT emulsion polymerization could be fast enough for commercial use even at extremely low initiator concentrations and low macro-RAFT agent concentrations due to the higher particle nucleation efficiency at lower initiator concentration. (C) 2016 American Institute of Chemical Engineers

引用

页码：2126 / 2134

页数：9

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