Synthesis and characterization of poly(ethylene oxide) star polymers possessing a tertiary amino group at each arm end by organized polymerization using macromonomers

被引：11

作者：

Furukawa, T ^{[1
]}

Ishizu, K ^{[1
]}

机构：

[1] Tokyo Inst Technol, Dept Organ Mat & Macromol, Int Res Ctr Macromol Sci, Meguro Ku, Tokyo 1528552, Japan

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2002年 / 253卷 / 02期

关键词：

poly(ethylene oxide) star; macromonomer; organized polymerization;

D O I：

10.1006/jcis.2002.8512

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：

Functional poly(ethylene oxide) star polymers possessing a tertiary amino group at each arm end were prepared by free-radical copolymerization of poly(ethylene oxide) macromonomers with divinylbenzene (DVB) in water or ethanol. The poly(ethylene oxide) arm was prepared by anionic polymerization using 2-[2-(N,N-dimethylamino)ethoxy]ethanol potassium alkoxide as the initiator. The star polymers had narrow molecular weight distribution. The arm number was controlled by varying the feed ratio [DVB]/[M], the initial concentration of macromonomer [M], and solvent media. The branching factor g' in methanol ([eta](S)/[eta](L) are the intrinsic viscosities of the star and linear molecules, respectively) exhibited a power-law dependence on the arm number, f, with a negative exponent. This means that the dimensions of a star were in agreement with the Daoud-Cotton scaling model. (C) 2002 Elsevier Science (USA).

引用

页码：465 / 469

页数：5