| 原子转移自由基聚合(ATRP)制备高密度端羟基聚氧乙烯梳状嵌段聚合物 |
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| 引用本文： | 李晓林,计剑,沈家骢.原子转移自由基聚合(ATRP)制备高密度端羟基聚氧乙烯梳状嵌段聚合物[J].高等学校化学学报,2005,26(2):388-390. |
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| 作者姓名： | 李晓林 计剑 沈家骢 |
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| 作者单位： | 浙江大学高分子科学与工程系,杭州,310027 |
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| 摘 要： | 聚氧乙烯Poly(ethylene glycol)，PEG]是一种稳定、无毒且具有良好的生物惰性和非免疫性、非抗原性的水溶性聚合物，在生物医学和生物技术领域具有广泛的应用背景和重要的研究意义，大量研究表明，多臂的PEG由于其枝状结构具有比线型结构更好的性能，然而，通常多臂，PEG采用Corefirst阴离子开环聚合环氧乙烷的方法，这种方法对聚合条件及设备等要求较高，限制了多臂的PEG的应用。
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| 关 键 词： | 原子转移自由基聚合 α-甲基丙烯酰基-ω-羟基-低聚聚乙二醇 梳状聚合物 |
| 文章编号： | 0251-0790(2005)02-0388-03 |
| 收稿时间： | 2004-03-03 |
Preparation of Comb-like Block Polymer Hydroxy-capped Poly(ethylene glycol)methacrylate with High Density via Atom Transfer Radical Polymerization |
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| LI Xiao-Lin,JI Jian,SHEN Jia-Cong.Preparation of Comb-like Block Polymer Hydroxy-capped Poly(ethylene glycol)methacrylate with High Density via Atom Transfer Radical Polymerization[J].Chemical Research In Chinese Universities,2005,26(2):388-390. |
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| Authors: | LI Xiao-Lin JI Jian SHEN Jia-Cong |
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| Institution: | Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | A novel hydroxy-capped comb-like block polymer, polypoly(ethylene glycol)](HCPEG), was prepared via atom transfer radical polymerization(ATRP) of α-methylacryloyl-ω-hydroxyl-poly(ethylene glycol). The polymerization kinetics of the PHPEGMA was studied by gel permeation chromatography and 1H NMR. The semilogarithmic plot of monomer conversion vs. reaction time increases linearly before the conversion is up to more than 70% and the number-average molecular weights(Mn) by GPC increased linearly with increase of the monomer conversion up to 100%, while the polydispersity index remained fairly narrow with Mw/Mn<1.2. |
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| Keywords: | Atom transfer radical polymerization(ATRP) α-Methylacryloyl-ω-hydroxyl-poly(ethylene glycol) Comb-like polymer |
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