Linear poly (ethylenimine)-graft-poly(ethylene glycol) copolymers:: Their micellization and secondary assembly

被引：9
|
作者：
Wang, Huanbing [1 ]
Chen, Xuesi [2 ]
Pan, Caiyuan [1 ]
机构：
[1] Univ Sci & Technol China, Dept Polymer Sci & Engn, Joint Lab Polymer Thin Films & Solut, Hefei 230026, Anhui, Peoples R China
[2] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
来源：
JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2008年 / 320卷 / 01期
基金：
中国国家自然科学基金;
关键词：
self-assembly; secondary assembly; pH-sensitive; poly(ethylenimine);
D O I：
10.1016/j.jcis.2007.11.051
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Linear poly(ethylenimine)-graft-poly(ethylene glycol)s (LPEI-g-PEG) with various degrees of grafting and molecular weights were synthesized by Michael addition reaction of LPEI with methoxy poly(ethylene glycol) acrylate. The graft copolymers display pH-sensitive behaviors, and pH variation of the copolymer solution induced the aggregation of graft copolymers, forming the micelles with different sizes. The dynamic light scattering method was used to study the effects of ionic strength, chain composition and pH on hydrodynamic radius. With solvent evaporation of the micelles solution, various morphologies were formed. (C) 2007 Elsevier Inc. All rights reserved.
引用
收藏
页码：62 / 69
页数：8
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