ANIONIC-POLYMERIZATION OF ISOPRENE IN DIETHYL-ETHER

被引：23

作者：

DYBALL, CJ ^{[1
]}

WORSFOLD, DJ ^{[1
]}

BYWATER, S ^{[1
]}

机构：

[1] NATL RES COUNCIL CANADA,DIV CHEM,OTTAWA K1A 0R9,ONTARIO,CANADA

来源：

MACROMOLECULES | 1979年 / 12卷 / 05期

关键词：

D O I：

10.1021/ma60071a005

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

An investigation has been made of the active centers in the anionic polymerization of isoprene in diethyl ether using model compounds. A preference for the cis configuration has been established, although some trans structure can be detected with lithium els the counterion. In this case, association ceui be detected at concentrations greater than 10-3 M. Polymerization rate measurements were made with lithium and potassium counterions. As is usual in polar solvents, the potassium-based system shows faster rates and a lower activation energy. Microstructures of the polymers formed were determined. Some factors determining polymer microstructure are discussed. © 1979, American Chemical Society. All rights reserved.

引用

页码：819 / 822

页数：4

共 24 条

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