| INFLUENCE OF DIALKYLZINC IN RARE-EARTH TERNARY CATALYST ON THE COPOLYMERIZATION OF CARBON DIOXIDE AND PROPYLENE OXIDE |
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| 作者姓名： | Dong Xie Xian-hong Wang Xiao-jiang Zhao Fo-song Wang |
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| 作者单位： | Polymer Material Engineering Lab, Changchun Institute of Applied Chemistry, Graduate School of Chinese Academy of Sciences, Changchun 130022, China |
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| 摘 要： | Rare-earth ternary catalysts Y（CCl3COO）3-ZnR2-glycerin were prepared for the copolymerization of carbon dioxide and propylene oxide （PO）, where dialkylzincs （ZnR2） were diethylzinc, di（n-propyl）zinc, di（n-butyl）zinc, di（i-propyl）zinc, di（i-butyl）zinc, di（s-butyl）zinc,respectively. The Y（CCl3COO）3-ZnR2-glycerin catalysts displayed the highest catalytic activity at the molar ratio of Y（CCl3COO）3：ZnR2：glycerin = 1：20：10. In the same copolymerization condition, catalysts containing dialkylzincs with branched alkyl group showed lower catalytic activity than that with primary alkyl group. For those catalysts including dialkylzincs with primary alkyl group, their catalytic activity decreases with increasing number of carbon atom in the alkyl group with the following sequence： Y（CCl3COO）3-ZnEt2-glycerin 〉 Y（CCl3COO）3-Zn（n- Pr）2-glycerin〉Y（CCl3COO）3-Zn（n-Bu）2-glycerin. However, the alkyl group in the dialkylzinc does not influence the insertion of PO into the propagation chain end.
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| 关 键 词： | 稀土 催化剂 二氧化碳 丙烯 共聚合作用 |
| 收稿时间： | 2004-12-07 |
| 修稿时间： | 2005-04-07 |
Influence of Dialkylzinc in Rare-earth Ternary Catalyst on the Copolymerization of Carbon Dioxide and Propylene Oxide |
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| Dong Xie Xian-hong Wang Xiao-jiang Zhao Fo-song Wang.INFLUENCE OF DIALKYLZINC IN RARE-EARTH TERNARY CATALYST ON THE COPOLYMERIZATION OF CARBON DIOXIDE AND PROPYLENE OXIDE[J].Chinese Journal of Polymer Science,2005,0(6):671-674. |
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| Authors: | Dong Xie Xian-hong Wang Xiao-jiang Zhao Fo-song Wang |
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| Institution: | Polymer Material Engineering Lab, Changchun Institute of Applied Chemistry, Graduate School of Chinese Academy of Sciences, Changchun 130022, China |
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| Abstract: | Rare-earth ternary catalysts Y(CC13COO)3-ZnR2-glycerin were prepared for the copolymerization of carbon dioxide and propylene oxide (PO), where dialkylzincs (ZnR2) were diethylzinc, di(n-propyl)zinc, ali(n-butyl)zinc, di(i-propyl)zinc, di(i-butyl)zinc, di(s-butyl)zinc,respectively. The Y(CCl3COO)3-ZnR2-glycerin catalysts displayed the highest catalytic activity at the molar ratio of Y(CCl3COO)3:ZnR2:glycerin = 1:20:10. In the same copolymerization condition,catalysts containing dialkylzincs with branched alkyl group showed lower catalytic activity than that with primary alkyl group. For those catalysts including dialkylzincs with primary alkyl group, their catalytic activity decreases with increasing number of carbon atom in the alkyl group with the following sequence: Y(CCl3COO)3-ZnEt2-glycerin ＞ Y(CCl3COO)3-Zn(n-Pr)2-glycerin＞Y(CCl3COO)3-Zn(n-Bu)2-glycerin. However, the alkyl group in the dialkylzinc does not influence the insertion of PO into the propagation chain end. |
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| Keywords: | Carbon dioxide Propylene oxide Copolymerization Dialkylzinc |
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