KINETICS AND MECHANISM OF EMULSIFIER-FREE EMULSION COPOLYMERIZATION

被引：12

作者：

CHEN, SA

LEE, ST

LEE, SJ

机构：

[1] Chemical Engineering Department, National Tsing-Hua University, Hsinchu

来源：

MAKROMOLEKULARE CHEMIE-MACROMOLECULAR SYMPOSIA | 1990年 / 35-6卷

关键词：

D O I：

10.1002/masy.19900350121

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

In the emulsifier‐free emulsion polymerization of styrene/potassium persulfate (KPS) system, due to larger particle size and ionic chain ends, the polymerization only occurs in the shell part of the polymer particles (the shell‐growth mechanism). For the styrene/comonomer/KPS system, the hydrophilicity and ionic characteristic of the comonomer play a dominant role in the nucleation and growth mechanisms. If a nonionic comonomer is used, the shell‐growth mechanism also follows. If an ionic comonomer having sufficient cross‐propagation with the monomer is used, the particle size is small and the polymerization occurs uniformly within the particles as in the conventional case. If it has insufficient cross‐propagation, then shell‐growth mechanism occurs again. Copyright © 1990 Hüthig & Wepf Verlag

引用

页码：349 / 365

页数：17

共 17 条

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