| COPOLYMERIZATION OF 1-OCTENE WITH STYRENE BY RARE EARTH COORDINATION CATALYSTS |
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| 作者姓名： | 杨慕杰 张小俊 李俭扶 沈之荃 |
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| 作者单位： | Department of Chemistry，Zhejiang University，Hangzhou，310027，Department of Chemistry，Zhejiang University，Hangzhou，310027，Department of Chemistry，Zhejiang University，Hangzhou，310027，Department of Chemistry，Zhejiang University，Hangzhou，310027 |
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| 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_p=K_p Nd] M]~2. (=1.68×10~(-3) L~2/mol~2. S, 50℃, Oct]/St]=1). The catalytic activity of various rare earth elements in Ln (naph)_3 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)_3-AlEt_3 have the tendency of constant proportion copolymerization. The structure of the copolymers was studied by ~1H-NMR.
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| 收稿时间： | 1991-02-09 |
COPOLYMERIZATION OF 1-OCTENE WITH STYRENE BY RARE EARTH COORDINATION CATALYSTS |
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| YANG Mujie,ZHANG Xiaojun,LI Jianfu,SHEN Zhiquan.COPOLYMERIZATION OF 1-OCTENE WITH STYRENE BY RARE EARTH COORDINATION CATALYSTS[J].Chinese Journal of Polymer Science,1992,0(2):106-112. |
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| Authors: | YANG Mujie ZHANG Xiaojun LI Jianfu SHEN Zhiquan |
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| Institution: | Department of Chemistry; Zhejiang University; Hangzhou |
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| Abstract: | 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 Rp=Kp Nd] M]2. (=1.68×10-3L2/mol2. S, 50℃, Oct]/St]=1). The catalytic activity of various rare earth elements in Ln (naph)3 for the copolymerization was compared and shows the following sequence:Dy,Y,Yb>Ho>Sm,Gd,Nd>Pr>Ce>La>Tm.Both monomers of 1-octene and styrene in the copolymerization by Nd(naph)3-AlEt3 have the tendency of constant proportion copolymerization.The structure of the copolymers was studied by 1H-NMR. |
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| Keywords: | 1-Octene Styrene Copolymerization Rare earth catalyst |
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