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

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	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
	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)
刊名	J. Polym. Sci. Pol. Chem.
	2010
卷号	48 期号:1 页码:15-23
ISSN号	0887-624X
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
通讯作者	胡建华 ; 黄晓宇
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
学科主题	高分子化学
收录类别	SCI
原文出处	http://dx.doi.org/10.1002/pola.23716
语种	英语
WOS记录号	WOS:000273249800002
公开日期	2013-03-11
内容类型	期刊论文
源URL	[http://202.127.28.38/handle/331003/24433]
专题	上海有机化学研究所_高分子材料研究室
推荐引用方式 GB/T 7714	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.
APA	冯纯.,李永军.,杨东.,李垚功.,胡建华.,...&黄晓宇.(2010).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. Polym. Sci. Pol. Chem.,48(1),15-23.
MLA	冯纯,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. Polym. Sci. Pol. Chem. 48.1(2010):15-23.