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学科主题: 高分子化学
题名: Synthesis of Well-Defined PNIPAM-b-(PEA-g-P2VP) Double Hydrophilic Graft Copolymer via Sequential SET-LRP and ATRP and Its "Schizophrenic" Micellization Behavior in Aqueous Media
其他题名: 由连续SET-LRP和ATRP合成结构规整的PNIPAM-b-(PEA-g-P2VP)双亲水接枝共聚物及其在水周多样性胶束行为的研究
作者: Feng C(冯纯) ; Li YJ(李永军) ; Yang D(杨东) ; Li YG(李垚功) ; Hu JH(胡建华) ; Zhai SJ(翟素娟) ; Lu GL(陆国林) ; Huang XY(黄晓宇)
通讯作者: 胡建华 ; 黄晓宇
刊名: J. Polym. Sci. Pol. Chem.
发表日期: 2010
卷: 48, 期:1, 页:15-23
收录类别: SCI
部门归属: 中国科学院上海有机化学研究所; 复旦大学
英文摘要: A series of well-defined double hydrophilic graft copolymers, consisting of poly(N-isopropylacrylamide)-b-poly-(ethyl acrylate) backbone and poly(2-vinylpyridine) side chains, were synthesized by successive single-electron-transfer living radical polymerization (SET-LRP) and atom transfer radical polymerization (ATRP). The backbone was prepared by sequential SET-LRP of N-isopropylacrylamide and 2-hydroxyethyl acrylate at 25 degrees C using CuCl/tris(2-(dimethylamino)ethyl)amine as the catalytic system. The obtained diblock copolymer was transformed into the macroinitiator by reacting with 2-chloropropionyl chloride. Next, grafting-from strategy was used for the synthesis of poly(N-isopropylacrylamide)-b-[poly(ethyl acrylate)-g-poly (2-vinylpyridine)] double hydrophilic graft copolymer. ATRP of 2-vinylpyridine was initiated by the macroinitiator at 25 degrees C using CuCl/hexamethyldiethylenetriamine as the catalytic system. The synthesis of both the backbone and the side chains are controllable. Thermo- and pH-responsive schizophrenic micellization behaviors were investigated by H-1 NMR, fluorescence spectroscopy, dynamic light scattering, and transmission electron microscopy. Unimolecular micelles with PNIPAM-core formed in acidic environment (pH = 2) with elevated temperature (T >= 32 degrees C), whereas the aggregates turned into spheres with PEA-g-P2VP-core accompanied with the lifting of pH values (pH >= 5.3) at room temperature. (C) 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48:15-23, 2010
语种: 英语
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WOS记录号: WOS:000273249800002
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内容类型: 期刊论文
URI标识: http://ir.sioc.ac.cn/handle/331003/24433
Appears in Collections:高分子材料研究室_期刊论文

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Recommended Citation:
Feng C,Li YJ,Yang D,et al. Synthesis of Well-Defined PNIPAM-b-(PEA-g-P2VP) Double Hydrophilic Graft Copolymer via Sequential SET-LRP and ATRP and Its "Schizophrenic" Micellization Behavior in Aqueous Media[J]. J. Polym. Sci. Pol. Chem.,2010,48(1):15-23.
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