KINETICS OF CROSS-LINKING REACTIONS .1. REACTION-RATE OF INTRAMOLECULAR CROSSLINKINGS BY USING A SOLUBLE MICROGEL

被引:16
作者
ISHIZU, K
KUWABARA, S
CHEN, H
MIZUNO, H
FUKUTOMI, T
机构
[1] Tokyo Inst of Technology, Tokyo, Jpn, Tokyo Inst of Technology, Tokyo, Jpn
关键词
CHEMICAL REACTIONS - Reaction Kinetics - CHROMATOGRAPHIC ANALYSIS - Gel Permeation - GELS - Crosslinking;
D O I
10.1002/pola.1986.080240802
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Soluble microgels with several pendant vinyl groups were synthesized by radical copolymerization of methyl methacrylate (MMA) with p-divinyl benzene (p-DVB). The polymerization conditions used for intramolecular crosslinking of microgels were chosen from gel permeation chromatograph (GPC) measurements of the reaction products. The rate constant of intramolecular crosslinking was estimated from the changes in the concentration of pendant vinyl groups of microgel by using photometrical measurements at 30 degree C assuming a unimolecular termination mechanism of polymer radicals. As a result, the rate constant showed larger values than those of styrene and depended strongly on the internal structure of the microgels.
引用
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页码:1735 / 1746
页数:12
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