POLYMERIZATION OF CRYSTALLINE METHACRYLIC ACID INITIATED BY ULTRA-VIOLET RADIATION .2. EFFECT OF ADDED ISOBUTYRIC ACID ON RADICAL CONFORMATIONS AND RATES OF REACTION

被引：15

作者：

BAMFORD, CH

BIBBY, A

EASTMOND, GC

机构：

[1] Department of Inorganic, Physical and Industrial Chemistry, University of Liverpool, Liverpool

来源：

POLYMER | 1968年 / 9卷 / 12期

关键词：

D O I：

10.1016/0032-3861(68)90086-4

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The influence of low concentrations of isobutyric acid in methacrylic acid crystals on the radical concentrations and conformations observed during irradiation with ultra-violet light at temperatures below -20°C has been studied. The additive, which is not chemically active, increases the density of sites in which there is adequate molecular mobility for reaction, and also changes the distribution of mobility in these sites. As a result, radical formation and relaxation occur more readily in the presence of the additive. At somewhat higher temperatures (-14°C), higher rates of polymerization, and higher molecular weights, are obtained in the presence of isobutyric acid. © 1968.

引用

页码：645 / &

共 14 条

[1] POLYMERIZATION IN SOLID SOLUTIONS OF ACRYLAMIDE IN PROPIONAMIDE [J].