USE OF CROWN-ETHER IN THE ANIONIC-POLYMERIZATION OF PROPYLENE-OXIDE .1. RATE OF POLYMERIZATION

被引：43

作者：

DING, JF

PRICE, C

BOOTH, C

机构：

[1] UNIV MANCHESTER,MANCHESTER POLYMER CTR,MANCHESTER M13 9PL,LANCS,ENGLAND

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

来源：

EUROPEAN POLYMER JOURNAL | 1991年 / 27卷 / 09期

关键词：

D O I：

10.1016/0014-3057(91)90028-M

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 rate of anionic polymerization of bulk propylene oxide catalysed by potassium alkoxide in the presence of 18-crown-6 ether was followed dilatometrically. Rate constants were obtained at 40, 50 and 60-degrees over a range of crown ether concentrations, so allowing calculation of activation energies for polymerization with and without added crown ether. The results were consistent with polymerization by ligand-separated and contact ion-pairs in equilibrium.

引用

页码：891 / 894

页数：4

共 16 条

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