THE EFFECT OF BULKY ESTER ALKYL SUBSTITUENTS ON RATE CONSTANTS OF RADICAL POLYMERIZATION OF DIALKYL FUMARATES

被引：8

作者：

MATSUMOTO, A ^{[1
]}

OTSU, T ^{[1
]}

机构：

[1] KINKI UNIV, FAC BIOL ORIENTED SCI & TECHNOL, UCHIDA, WAKAYAMA 64964, JAPAN

来源：

PROCEEDINGS OF THE JAPAN ACADEMY SERIES B-PHYSICAL AND BIOLOGICAL SCIENCES | 1994年 / 70卷 / 04期

关键词：

1,2-DISUBSTITUTED ETHYLENE; DIALKYL FUMARATE; PROPAGATION; TERMINATION; RATE CONSTANTS; TACTICITY;

D O I：

10.2183/pjab.70.43

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The radical polymerization of dialkyl fumarates bearing various ester alkyl groups was investigated to evaluate the propagation and termination rate constants (k(p) and k(t)) by means of electron spin resonance spectroscopy. It was revealed that the introduction of tert-butyl ester group promoted the polymerization reactivity not only the retardation of the termination, but also by the acceleration of the propagation despite of steric repulsion by the bulky substituents. The latter was interpreted by the stereospecific propagation leading to the diisotactic polymer formation.

引用

页码：43 / 47

页数：5

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