Dramatic solvent effects on ring-opening metathesis polymerization of cycloalkenes

被引：47
作者：
Al Samak, B
Amir-Ebrahimi, V
Corry, DG
Hamilton, JG [1 ]
Rigby, S
Rooney, JJ
Thompson, JM
机构：
[1] Queens Univ Belfast, Sch Chem, Belfast BT9 5AG, Antrim, North Ireland
[2] Robert Gordon Univ, Sch Appl Sci, Aberdeen AB25 1HG, Scotland
来源：
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2000年 / 160卷 / 01期
关键词：
metathesis polymers; alternating copolymers; acidic alcohols and ether solvents; tacticity; C-13; NMR;
D O I：
10.1016/S1381-1169(00)00228-4
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A series of metathesis polymers and copolymers have been formed and their structures were analysed by C-13 NMR spectroscopy. Noble metal and non-noble metal salt catalysts are distinguished by their behaviour in various solvents. Thus, in phenolic solvents, the former class produce alternating copolymers from cyclopentene and norbornene, while the latter are unaffected and produce random copolymers. In contrast, ether solvents have the effect of markedly increasing the cis content of polymers from the latter catalysts while the former are unaffected. The tacticity of various polymers are correlated through their hydrogenated derivatives and found to depend on the type of monomer as well as the catalysts. (C) 2000 Elsevier Science B.V. All rights reserved.
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页码：13 / 21
页数：9
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