| Synthesis and Characterization of Amphiphific Block Copolymer Containing PVP and Poly（5-benzyloxytrimethylene carbonate） |
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| 作者姓名： | Ying Xia WANG Feng HE Ren Xi ZHUO |
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| 作者单位： | Key Laboratory of Biomedical Polymers of Ministry of Education, Department of Chemistry, Wuhan University, Wuhan 430072 |
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| 基金项目： | Acknowledgment The authors are grateful for the financial support of National Key Fundamental Research Program of China （Grant No. G1999064703） and the National Natural Science Foundation of China （Grant No. 20104005）. |
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| 摘 要： | Amphiphilic copolymer of 5-benzyloxytrimethylene carbonate （BTMC） with poly （vinyl pyrrolidone） （PVP） was successfully synthesized using immobilized porcine pancreas lipase （IPPL） or SnOct2 as catalyst. Hydroxyl terminated PVP, synthesized with 2-mercaptoethanol as a chain transfer reagent, was employed as a rnacroinitiator. The resulting copolymers were characterized by GPC, ^1H NMR and IR. Increasing the BTMC/PVP-OH feed ratio （[B]/[P]） resulted in the increase of Mn of corresponding copolymers and the decrease of Mw/Mn. Immobilized enzyme has comparable catalytic activity to SnOct2 for the copolymerization.
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| 关 键 词： | 合成 表征 两性分子共聚体 聚乙烯吡咯酮 PVP 末端功能化 聚（5-苄基氧三甲烯碳酸盐） 引发剂 |
| 收稿时间： | 2005-06-06 |
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