| AMPHIPHILIC STAR-BLOCK COPOLYMERS BY IODIDE-MEDIATED RADICAL POLYMERIZATION |
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| 作者姓名： | Bing-yi Li Yan Shi Zhi-feng Fu Wan-tai Yang Shu-ke Jiao |
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| 作者单位： | State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China |
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| 摘 要： | Amphiphilic star-block copolymers composed of polystyrene and poly(acrylic acid)were synthesized by iodide- mediated radical polymerization.Firstly,free radical polymerization of styrene was carried out with AIBN as initiator and 1,1,1-trimethyolpropane tri(2-iodoisobutyrate)as chain transfer agent,giving iodine atom ended star-shaped polystyrene with three arm chains,R(polystyrene)_3.Secondly,tert-butyl acrylate was polymerization using polystyrene obtained as macro-chain transfer agent,and star-block copolymer,R(polystyrene-b-poly(tert-butyl acrylate))_3 with controlled molecular weight was obtained.Finally,amphiphilic star-block copolymer,R(polystyrene-b-poly(acrylic acid))_3 was obtained by hydrolysis of R(polystyrene-b-poly(tert-butyl acrylate))_3 under acidic condition.
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| 关 键 词： | 生物根 聚合作用 碘化物 两性分子 |
| 收稿时间： | 2006-10-17 |
| 修稿时间： | 2006-10-17 |
AMPHIPHILIC STAR-BLOCK COPOLYMERS BY IODIDE-MEDIATED RADICAL POLYMERIZATION |
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| Bing-yi Li Yan Shi Zhi-feng Fu Wan-tai Yang Shu-ke Jiao.AMPHIPHILIC STAR-BLOCK COPOLYMERS BY IODIDE-MEDIATED RADICAL POLYMERIZATION[J].Chinese Journal of Polymer Science,2007,0(6):609-619. |
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| Authors: | Bing-yi Li Yan Shi Zhi-feng Fu Wan-tai Yang Shu-ke Jiao |
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| Abstract: | Amphiphilic star-block copolymers composed of polystyrene and poly(acrylic acid) were synthesized by iodidemediated radical polymerization. Firstly, free radical polymerization of styrene was carried out with AIBN as initiator and 1,1,1-trimethyolpropane tri(2-iodoisobutyrate) as chain transfer agent, giving iodine atom ended star-shaped polystyrene with three arm chains, R(polystyrene)3. Secondly, tert-butyl acrylate was polymerization using polystyrene obtained as macro-chain transfer agent, and star-block copolymer, R(polystyrene-b-poly(tert-butyl acrylate))3 with controlled molecular weight was obtained. Finally, amphiphilic star-block copolymer, R(polystyrene-b-poly(acrylic acid))3 was obtained by hydrolysis of R(polystyrene-b-poly(tert-butyl acrylate))3 under acidic condition. |
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| Keywords: | Living radical polymerization Iodide-Mediated radical polymerization Star-block copolymers Amphiphilic copolymers RADICAL POLYMERIZATION acidic condition hydrolysis controlled molecular weight copolymers acrylate radical polymerization chain transfer iodine atom chains agent free polystyrene initiator synthesized acrylic |
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