COPOLYMERIZATION OF 1-OCTENE WITH STYRENE BY RARE EARTH COORDINATION CATALYSTS

被引：0
|
作者：
杨慕杰
张小俊
李俭扶
沈之荃
机构：
[1] Department of Chemistry
[2] Hangzhou
[3] Zhejiang University
来源：
Chinese Journal of Polymer Science | 1992年 / 02期
关键词：
1-Octene; Styrene; Copolymerization; Rare earth catalyst;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The copolymerization of l-octene with styrene catalyzed by rare earth coordination catalysts has been studied for the first time. Some features and kinetic behavior are described. The overall activation energy of the copolymerization was 22.2 KJ/mol and the copolymerization rate could be expressed as R;=K;[Nd] [M];. (=1.68×10;L;/mol;. S, 50℃, [Oct]/[St]=1). The catalytic activity of various rare earth elements in Ln （naph）;for the copolymerization was compared and shows the following sequence: Dy, Y, Yb>Ho>Sm, Gd, Nd>Pr>Ce>La>Tm. Both monomers of l-octene and styrene in the copolymerization by Nd （naph）;-AlEt;have the tendency of constant proportion copolymerization. The structure of the copolymers was studied by;H-NMR.
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页码：106 / 112
页数：7
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