| RING-OPENING POLYMERIZATION OF PROPYLENE SULFIDE CATALYZED BY BIMETALLIC OXO ALKOXIDE |
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| 作者姓名： | 朱业湘 谢洪泉 |
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| 作者单位： | Hubei Research Institute of Chemistry，Wuhan，Hubei Research Institute of Chemistry，Wuhan |
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| 摘 要： | It was shown that the polymerization rate of propylene sulfide is second order with respect tomonomer concentration and half order with respect to catalyst concentration. A mechanism ofbimolecular coordinated propagation of propylene sulfide and association of the catalyst in thepolymerization system were proposed. The activation energy of polymerization was measured as12.2±0. 5 kcal/mole. Chain transfer constants of monomer and solvent were calculated. Thechange of molecular weight and molecular weight distribution with conversion was followed by GPCwhich was improved by adding LiCl to eluant.
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| 收稿时间： | 1983-10-22 |
RING-OPENING POLYMERIZATION OF PROPYLENE SULFIDE CATALYZED BY BIMETALLIC OXO ALKOXIDE* |
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| ZHU Yiexiang,XIE Hongquan.RING-OPENING POLYMERIZATION OF PROPYLENE SULFIDE CATALYZED BY BIMETALLIC OXO ALKOXIDE[J].Chinese Journal of Polymer Science,1985,0(2):116-123. |
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| Authors: | ZHU Yiexiang XIE Hongquan |
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| Institution: | Hubei Research Institute of Chemistry; Wuhan |
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| Abstract: | It was shown that the polymerization rate of propylene sulfide is second order with respect tomonomer concentration and half order with respect to catalyst concentration. A mechanism ofbimolecular coordinated propagation of propylene sulfide and association of the catalyst in thepolymerization system were proposed. The activation energy of polymerization was measured as12.2±0. 5 kcal/mole. Chain transfer constants of monomer and solvent were calculated. The change of molecular weight and molecular weight distribution with conversion was followed by GPC which was improved by adding LiCl to eluant. |
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