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Polymerization of vinyl monomers initiated by zwitterionic polymer in aqueous solution

✍ Scribed by Der-Jang Liaw; Kueir-Rarn Lee

Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
540 KB
Volume
30
Category
Article
ISSN
0959-8103

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✦ Synopsis

Abstract

The polymerization of vinyl monomers, mainly styrene and methyl methacrylate, initiated by zwitterionic poly[3‐dimethyl(methacryloyloxy‐ethyl)ammonium propane sulfonate], [poly(DMAPS)], in aqueous solution was studied under vacuum at 85°C. An initiation mechanism involving hydrogen atom transfer is proposed. The effects of the efficiency of grafting. pH, water content and betaine polymer content on the polymerization were investigated. The conversion of vinyl monomers in poly(DMAPS) is lower than that in poly [3‐dimethyl(acryloyloxyethyl)ammonium propane sulfonate], which may be due to steric hindrance of the methyl group on the α‐carbon of the former.

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