| ATRP合成大分子单体法制备核壳结构微球 |
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| 引用本文： | 储鸿,杨伟,陈明清,陆剑燕,施冬健,明石满.ATRP合成大分子单体法制备核壳结构微球[J].中国化学,2008,26(10):1907-1912. |
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| 作者姓名： | 储鸿 杨伟 陈明清 陆剑燕 施冬健 明石满 |
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| 作者单位： | 1 江南大学 化学与材料工程学院，无锡，214122 ;2 日本大阪大学应用化学系，565-0871 ; |
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| 摘 要： | 以α-溴代丙酸乙酯(EPN-Br)为引发剂, N,N, N′,N″,N″-五甲基二亚乙基三胺(PMDETA)为配体，使甲基丙烯酸叔丁酯进行原子转移自由基聚合，合成了端基带溴原子的聚甲基丙烯酸叔丁酯(PtBMA-Br)大分子中间体，通过其与甲基丙烯酸的亲核取代反应，得到了末端C=C双键含量高的大分子单体（MAA-PtBMA），其相对分子质量可控制在5400-12000g/mol的范围内，分子量分布≤1.20。以偶氮二异丁腈为自由基引发剂，在乙醇中使MAA-PtBMA大分子单体与苯乙烯（St）进行分散共聚，制得了甲基丙烯酸叔丁酯接枝聚苯乙烯（PtBMA-g-PSt）微米级共聚微球，该微球具有核壳结构。
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| 关 键 词： | atom transfer radical polymerization nucleophilic substitution macromonomer dispersion copolymerization microsphere |
| 收稿时间： | 2008-3-25 |
| 修稿时间： | 2008-4-25 |
Preparation of Core‐shell Microspheres by ATRP Synthesized Macromonomer |
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| Hong CHU,Wei YANG,Ming‐Qing CHEN,Jian‐Yan LU,Dong‐Jian SHI,Mitusu AKASHI.Preparation of Core‐shell Microspheres by ATRP Synthesized Macromonomer[J].Chinese Journal of Chemistry,2008,26(10):1907-1912. |
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| Authors: | Hong CHU Wei YANG Ming‐Qing CHEN Jian‐Yan LU Dong‐Jian SHI Mitusu AKASHI |
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| Institution: | 1. School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China;2. Department of Applied Chemistry, Osaka University, 2‐1 Yamadaoka, Suita 565‐0871, Japan |
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| Abstract: | Poly(tert‐butyl methacrylate) macrointermediates (PtBMA‐Br) with an end of bromine atom were synthesized by atom transfer radical polymerization using ethylbromopropionate as an initiator in bulk in the presence of N,N,N′,N′′,N′′‐pentamethyl diethylenetriamine (PMDETA) as a single ligand. A new macromonomer (MAA‐ PtBMA) was successfully prepared via end‐group nucleophilic substitution with methacrylic acid to attain a high efficiency of C=C incorporation. The molecular weights of MAA‐PtBMA macromonomers were controllable from 5400 to 11000 g/mol, and the molecular weight distribution was narrow (≤1.20). Then, the PtBMA graft polystyrene (PtBMA‐g‐PSt) microspheres were prepared by dispersion copolymerization of MAA‐PtBMA macromonomers with styrene using 2,2′‐azobisisobutyronitrile as a free radical initiator in ethanol. The resulting PtBMA‐g‐PSt microspheres were regulated in diameter on a micron scale. |
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| Keywords: | atom transfer radical polymerization nucleophilic substitution macromonomer dispersion copolymerization microsphere |
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