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离子场活化的GTP机理研究
Authors
丁马太
夏海平
Publication date
27 September 1992
Publisher
Abstract
关于基团转移聚合(GTP)机理先后有可逆离解、不可逆离解和络合等多种见解,但都与一些实验事实相矛盾,本文在前人研究的基础上提出了特殊离子场活化聚合机理. 1 离子场活化聚合机理 (1)在GTP过程阴离子催化剂通过产生“离子场”对所有引发剂分子活化,离子场总强度Q与有效催化剂摩尔浓度成正比.(2)离子场均等地影响引发剂分子上的硅原子,增强其亲电性,每个硅原子分享的场强Q_i与有效硅烷基总摩尔浓度n成反比,即Q_i=Q/n.(3)只有当Q_
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Last time updated on 16/06/2016