丙交酯(L-LA)与PEG600多嵌段共聚物的合成与表征 |
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引用本文: | 褚艳红,张国宝,赵根锁,余守志. 丙交酯(L-LA)与PEG600多嵌段共聚物的合成与表征[J]. 河南科学, 2003, 21(4): 404-407 |
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作者姓名: | 褚艳红 张国宝 赵根锁 余守志 |
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作者单位: | 河南大学化学化工学院,河南,开封,475001;河南省科学院分析测试中心,河南,郑州,450002 |
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基金项目: | 河南省自然科学基金资助(011103200) |
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摘 要: | 以氧化锌为催化剂,使丙交酯开环与PEG600共聚,得到三嵌段的HO-PLLA-PEG-PLLA-OH预聚物,产物的数均相对分子量为2127。以TDI-80为扩链剂对其进行扩链,得到多嵌段共聚物。采用NMR、IR、GPC等对产物的结构、分子量分布进行了表征。
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关 键 词: | 丙交酯 聚乙二醇(600) 多嵌段共聚物 |
文章编号: | 1004-3918(2003)04-0404-04 |
修稿时间: | 2003-05-10 |
Synthesis and characterization of multi-block copolymer with L-LA and PEG600 |
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Abstract: | Tri block pre polymer HO PLLA PEG PLLA OH having the number average molecular weight 2127 was obtained by L Lactide ring opening polymerization with PEG600 using ZnO as catalyst. The average Mn and Mw of multi block copolymer could be increased to 8496, 31078 respectively by chain extending with {TDI 80}. The chain structure and molecular weight distribution of multi block copolymer was characterized by IR, NMR and GPC. |
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Keywords: | L-Lactide PEG600 Multi-block copolymer |
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