| 星型嵌段共聚物PEO_4-b-PNIPAAm_4的合成 |
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| 引用本文： | 杨文,张孝彦,付鹏,赵清香,刘民英,王玉东.星型嵌段共聚物PEO_4-b-PNIPAAm_4的合成[J].高分子材料科学与工程,2011(8):43-45,49. |
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| 作者姓名： | 杨文 张孝彦 付鹏 赵清香 刘民英 王玉东 |
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| 作者单位： | 郑州大学材料科学与工程学院 |
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| 基金项目： | 河南省杰出青年科学基金资助项目(74100510025);河南省教育厅自然科学基金资助项目(2009A430018) |
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| 摘 要： | 通过可逆加成-裂解链转移自由基聚合（RAFT）和活性阴离子开环聚合（ROP）方法合成了星型嵌段共聚物PEO4-b-PNIPAAm4。首先通过活性阴离子聚合合成了分子量为8000、分子量分布为1.1的四臂星型聚环氧乙烷（PEO4）,PEO4的末端羟基和DDAT进行酯化反应,得到大分子RAFT引发剂。然后引发N-异丙基丙烯...
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| 关 键 词： | 共聚物 可逆加成-裂解链转移自由基聚合 环境响应性 N-异丙基丙烯酰胺 |
Synthesis of Four-Arm Star-Shaped Copolymers Poly(Ethylene Oxide)-b-Poly(N-Isopropylacrylamide) |
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| Wen Yang,Xiaoyan Zhang,Peng Fu,Qingxiang Zhao,Minying Liu,Yudong Wang.Synthesis of Four-Arm Star-Shaped Copolymers Poly(Ethylene Oxide)-b-Poly(N-Isopropylacrylamide)[J].Polymer Materials Science & Engineering,2011(8):43-45,49. |
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| Authors: | Wen Yang Xiaoyan Zhang Peng Fu Qingxiang Zhao Minying Liu Yudong Wang |
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| Affiliation: | (College of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450001,China) |
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| Abstract: | a series of four-arm star-shaped block copolymers poly(ethylene oxide)-b-poly(N-isopropyl-acrylamide)(PEO4-b-PNIPAAm4) were synthesized by a combination of reversive addition-fragmentation chain transfer polymerization(RAFT) and anionic ring-opening polymeration(AROP).Firstly,the four-arm star-shaped PEO4 was prepared by AROP of EO.Then,PEO4 was esterified by reaction with S-1-dodecyl-S′-(α,α′-dimethyl-α″-acetic acid)trithio-carbonate)(DDAT),and then used as RAFT macroinitiator to initiate polymerization of NIPAAm.And a series of four-arm star-shaped copolymers PEO4-b-PNIPAAm4 were obtained.The structure and molecular weights of every segment of the star-shaped block copolymer were controllable,and the polydispersity was narrow.The final product and intermediate were characterized by 1H nuclear magnetic resonance spectrum(1H-NMR)and gel permeation in chromatography(GPC) in details. |
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| Keywords: | block copolymer RAFT environment-responsive N-isopropylacrylamide |
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