Ab Initio Batch Emulsion RAFT Polymerization of Styrene Mediated by Poly(acrylic acid-b-styrene) Trithicicarbonate

被引：101

作者：

Wang, Xiaoguang ^{[1
]}

Luo, Yingwu ^{[1
]}

Li, Bogeng ^{[1
]}

Zhu, Shiping ^{[2
]}

机构：

[1] Zhejiang Univ, Dept Chem & Biochem Engn, State Key Lab Chem Engn, Hangzhou 310027, Peoples R China

[2] McMaster Univ, Dept Chem Engn, Hamilton, ON L8S 4L7, Canada

来源：

MACROMOLECULES | 2009年 / 42卷 / 17期

基金：

美国国家科学基金会;

关键词：

FRAGMENTATION CHAIN TRANSFER; CONTROLLED/LIVING RADICAL POLYMERIZATION; DISPERSED SYSTEMS; MINIEMULSION POLYMERIZATION; AMPHIPHILIC BLOCK; MOLECULAR-WEIGHT; COMPARTMENTALIZATION; AGENT; COPOLYMERIZATION; STABILIZATION;

D O I：

10.1021/ma9010999

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We report an ab initio emulsion reversible addition-fragmentation chain transfer (RAFT) polymerization of styrene using poly(acrylic acid-b-styrene) trithiocarbonate as surfactant and RAFT agent. The system is characteristic or high polymerization rate, controlled polymer molecular weight, and free of coagulum. Design of the amphiphilic RAFT agent is found to be critical for the success. Poly(acrylic acid) neutralization increased the colloidal stability but led to uncontrolled molecular weight development and broad molecular weight distribution, attributed to small size and thus large number of micelles resulting in continuous particle nucleation. Polystyrene with molecular weight LIP to 120 kg/mol and block styrene-butylacrylate copolymer with well-controlled molecular weight were readily synthesized with this method.

引用

页码：6414 / 6421

页数：8

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