| COORDINATION COPOLYMERIZATION OF STYRENE WITH MALEIC ANHYDRIDE BY RARE-EARTH COORDINATION CATALYSTS |
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| 作者姓名： | 杨慕杰 郑豪 沈之荃 |
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| 作者单位： | Department of Chemistry，Zhejiang University，Hangzhou 310027，PRC，Department of Chemistry，Zhejiang University，Hangzhou 310027，PRC，Department of Chemistry，Zhejiang University，Hangzhou 310027，PRC |
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| 摘 要： | The study on coordination copolymerization of styrene (S) with maleic anhydride (MA) by rare-earth coordination catalysts, NdL_3-Al(i-Bu)_3, has been successfully carried out for the first time. Some features, kinetic behavior, and mechanism of the SMA copolymerization by Nd(naph)_3-Al(i-Bu)_3 system are described and discussed. The copolymex of styrenemaleic anhydride prepared by the NdL_3-Al(i-Bu)_3 systems in benzene at 50℃ is an alternating-rich white powder having high number-average molecular weight of 6—8.5×10~5. The overall activation energy for the polymerization was found to be 10.5KJ/mol. The polymerization was not suppressed by addition of hydroquinone. The catalytic activity of various ligands in NdL_3 for the copolymerization decreases in the following order: Nd (naph)_3>Nd-(P_(507))_3～NdCl_3-6H_2O>Nd(P_(204))_3>Nd(acac)_3. 3H_2O. The experimental results are explained based on a mechanism to be the coordination-type copolymerization in terms of the participation of a monomer-monomer c
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COORDINATION COPOLYMERIZATION OF STYRENE WITH MALEIC ANHYDRIDE BY RARE-EARTH COORDINATION CATALYSTS |
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| YANG MU-IE ZHENG HAO AND SHEN ZHI-QUAN.COORDINATION COPOLYMERIZATION OF STYRENE WITH MALEIC ANHYDRIDE BY RARE-EARTH COORDINATION CATALYSTS[J].Science in China(Chemistry),1992(6). |
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| Authors: | YANG MU-IE ZHENG HAO AND SHEN ZHI-QUAN |
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| Abstract: | |
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| Keywords: | rare-earth coordination catalyst styrene maleic anhydride coordination copolymerization |
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