MACROCYCLIC TETRAHYDROFURAN OLIGOMERS .3. FORMATION OF MACROCYCLES IN TETRAHYDROFURAN COPOLYMERIZATIONS

被引：16

作者：

ROBINSON, IM ^{[1
]}

PRUCKMAYR, G ^{[1
]}

机构：

[1] DUPONT CO,DEPT CHEM DYES & PIGMENTS,WILMINGTON,DE 19898

来源：

MACROMOLECULES | 1979年 / 12卷 / 06期

关键词：

D O I：

10.1021/ma60072a005

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Previous work demonstrated formation of cyclic oligomers and high molecular weight linear polymer during polymerization of tetrahydrofuran (THF) with nonhydrolyzable proton acid initiators. A similar mechanism is now shown to be operative in ethylene oxide (EO) homopolymerizations and EO/THF copolymerizations. In EO/THF copolymerizations, the predominant oligomers are cyclic tetramers. The absence of linear oligomers in these systems supports the general nature of the proposed chain-coupling mechanism. © 1979, American Chemical Society. All rights reserved.

引用

页码：1043 / 1047

页数：5

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