CHAIN TRANSFER TO POLYMER IN EMULSION POLYMERIZATION OF NORMAL-BUTYL ACRYLATE STUDIED BY C-13 NMR-SPECTROSCOPY AND GPC

被引：0

作者：

LOVELL, PA ^{[1
]}

SHAH, TH ^{[1
]}

HEATLEY, F ^{[1
]}

机构：

[1] UNIV MANCHESTER,DEPT CHEM,MANCHESTER M13 9PL,LANCS,ENGLAND

来源：

POLYMER COMMUNICATIONS | 1991年 / 32卷 / 04期

关键词：

CHAIN TRANSFER TO POLYMER; EMULSION POLYMERIZATION; NORMAL-BUTYL ACRYLATE; C-13; NMR; GPC;

D O I：

暂无

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Direct C-13 n.m.r. evidence for chain transfer to polymer in emulsion polymerization of n-butyl acrylate is reported. This reveals that the reaction proceeds by abstraction of tertiary C-H bonds in n-butyl acrylate repeat units and, under the usual condition of high instantaneous conversion, leads to polymers with high extents of branching (10-20 branches per 1000 backbone carbon atoms). Changes in molar mass distribution during emulsion polymerization correlate with observations on the extent of chain transfer to polymer.

引用

页码：98 / 103

页数：6