SIMULTANEOUS POLYMERIZATION AND FORMATION OF POLYPHENYLACETYLENE FILMS BY RARE-EARTH COORDINATION CATALYSIS Ⅳ.KINETICS AND MECHANISM OF POLYMERIZATION 期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

SIMULTANEOUS POLYMERIZATION AND FORMATION OF POLYPHENYLACETYLENE FILMS BY RARE-EARTH COORDINATION CATALYSIS Ⅳ.KINETICS AND MECHANISM OF POLYMERIZATION

作者姓名：	赵健杨慕杰刘敏沈之荃

作者单位：	Department of Chemistry Zhejiang University，Hangzhou 310027，China，Department of Chemistry，Zhejiang University，Hangzhou 310027，China，Department of Chemistry，Zhejiang University，Hangzhou 310027，China，Department of Chemistry，Zhejiang University，Hangzhou 310027，China

摘要：	The CO_2 quenching method has been used for the first time to determine the active complex concen-tration in Nd(naph)_3-Al(i-Bu)_3 catalyst system for polymerization of phenylacetylene intopolyphenylacetylene(PPA)films.The kinetics and mechanism of this polymerization have been investigatedby CO_2 quenching and IR,UV analytical methods.The kinetic equation can be expressed asRp=k[M][Cp],and the apparent activation energy is about 13.6 kJ/mol.There is self-termination ofchain propagating.Models for formation of the active complex and polymerization mechanism are proposed.
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