| 三(2,6-二叔丁基-4-甲基-苯氧基)镧催化ε-己内酯低温聚合特征及与环碳酸酯嵌段共聚 |
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| 引用本文： | 祝桂香,谈国华,凌君,陈伟,沈之荃.三(2,6-二叔丁基-4-甲基-苯氧基)镧催化ε-己内酯低温聚合特征及与环碳酸酯嵌段共聚[J].高等学校化学学报,2006,27(2):356-359. |
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| 作者姓名： | 祝桂香 谈国华 凌君 陈伟 沈之荃 |
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| 作者单位： | 1. 浙江大学高分子科学与工程系, 杭州 310027; 2. 中国石油化工股份有限公司北京化工研究院, 北京 100013 |
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| 基金项目： | 国家自然科学重点基金(批准号:20434020),国家“九七三”计划项目(批准号:2005CB623802)资助 |
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| 摘 要： | 摘要用三(2,6-二叔丁基-4-甲基-苯氧基)镧La(OAr)3]在-15 ℃引发ε-己内酯(CL)的开环聚合, 发现聚合体系具有活性聚合特征. 在第二步聚合过程中继续补加第二种单体三亚甲基环碳酸酯(TMC)或二甲基三亚甲基环碳酸酯(DTC), 可得到CL与环碳酸酯的嵌段共聚物.
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| 关 键 词： | 关键词ε-己内酯 稀土催化剂 环碳酸酯 开环聚合 |
| 文章编号： | 0251-0790（2006）02-0356-04 |
| 收稿时间： | 03 17 2005 12:00AM |
| 修稿时间： | 2005-03-17 |
Polymerization Characteristics of ε-Caprolactone at Low Temperature by Lanthanum Tris(2,6-di-tert-butyl-4-methylphenolate) and the Block Copolymerization of ε-Caprolactone with Cyclic Carbonates |
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| ZHU Gui-Xiang,TAN Guo-Hua,LING Jun,CHEN Wei,SHEN Zhi-Quan.Polymerization Characteristics of ε-Caprolactone at Low Temperature by Lanthanum Tris(2,6-di-tert-butyl-4-methylphenolate) and the Block Copolymerization of ε-Caprolactone with Cyclic Carbonates[J].Chemical Research In Chinese Universities,2006,27(2):356-359. |
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| Authors: | ZHU Gui-Xiang TAN Guo-Hua LING Jun CHEN Wei SHEN Zhi-Quan |
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| Institution: | 1. Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China;
2. SINOPEC Beijing Research Institute of Chemical Industry, Beijing 100013, China |
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| Abstract: | Abstract The polymerization characteristics of ε-caprolactone(CL) with lanthanum tris(2,6-di-tert-butyl-4-methylphenolate) at a low temperature was reported. The polymerization system shows some living character below -10 ℃. That is the length of polymer chain increases with the increase of the molar ratio of monomer to initiator or polymerization time. The block copolymers of CL and cyclic carbonate(TMC or DTC) were prepared after CL had been polymerized for a period at a low temperature and were characterized by GPC, DSC and 1H NMR. |
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| Keywords: | ε-Caprolactone Rare earth catalyst Cyclic carbonate Keywords ε-Caprolactone" target="_blank">Ring-opening polymerization')" href="#">Keywords ε-Caprolactone Rare earth catalyst Cyclic carbonate Ring-opening polymerization |
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