FUNCTIONAL POLYTHIIRANES .1. COMPARATIVE-STUDY OF THE ANIONIC-POLYMERIZATION OF MERCAPTOMETHYLTHIIRANE AND HYDROXYMETHYLTHIIRANE INITIATED BY QUATERNARY AMMONIUM DITHIOBENZOATE

被引：4

作者：

BONNANSPLAISANCE, C ^{[1
]}

LEVESQUE, G ^{[1
]}

机构：

[1] UNIV CAEN,INST SCI MAT & RAYONNEMENT,COMPOSES THIOORGAN LAB,CNRS,UA 480,F-14032 CAEN,FRANCE

来源：

POLYMER | 1991年 / 32卷 / 07期

关键词：

THIIRANE ANIONIC POLYMERIZATION; CHAIN TRANSFERS; HYDROXYMETHYLTHIIRANE; MERCAPTOMETHYLTHIIRANE; (BENZYLTHIO)-METHYLTHIIRANE;

D O I：

10.1016/0032-3861(91)90238-E

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 occurrence of chain transfers has been studied during the anionic polymerization of protic thiiranes in dimethylformamide initiated by tetramethylammonium dithiobenzoate. Results on polymer molecular weights and C-13 nuclear magnetic resonance spectra as well as polymerization rates have been used in a comparative study of hydroxymethylthiirane and mercaptomethylthiirane polymerizations. We have demonstrated that chain transfers occur significantly with mercaptomethylthiirane while they may be considered as non-existent with hydroxymethylthiirane. This is due to the equilibrium between 'thiolate' and 'olate' ions being more favourable to thiolate because of the relative acidity of thiols and alcohols.

引用

页码：1318 / 1322

页数：5

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