| SIMULTANEOUS POLYMERIZATION AND FORMATION OF POLYPHENYLACETYLENE FILMS BY RARE-EARTH COORDINATION CATALYSIS Ⅳ.KINETICS AND MECHANISM OF POLYMERIZATION |
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| 引用本文： | 赵健,杨慕杰,刘敏,沈之荃.SIMULTANEOUS POLYMERIZATION AND FORMATION OF POLYPHENYLACETYLENE FILMS BY RARE-EARTH COORDINATION CATALYSIS Ⅳ.KINETICS AND MECHANISM OF POLYMERIZATION[J].中国稀土学报(英文版),1990(3). |
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| 作者姓名： | 赵健 杨慕杰 刘敏 沈之荃 |
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| 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 |
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| 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=kM]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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