SYNTHESIS AND PROPERTIES OF 2 KINDS OF AMPHIPHILIC GRAFT-COPOLYMERS WITH WELL-DEFINED STRUCTURE

被引：9
|
作者：
XIE, HQ
WU, XD
GUO, JS
机构：
[1] Department of Chemistry, Huazhong University of Science and Technology, Wuhan
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 1994年 / 54卷 / 08期
关键词：
D O I：
10.1002/app.1994.070540810
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Polyacrylamide with well-defined polystyrene grafts (PAM-g-PS) and poly(methacrylic acid) with well-defined poly(methyl methacrylate) grafts (PMAA-g-PMMA) were synthesized via macromer techniques. Polymerization conditions and reactivity ratios for the copolymerizations were studied. The graft copolymers were purified by extractions and characterized with IR spectra. Structural parameters of PMAA-g-PMMA were determined by measurement of number average molecular weight of both macromers and copolymers. Both kinds of the graft copolymers are amphiphilic, exhibiting good emulsifying properties. When PAM-g-PS was mixed with PMAA-g-PMMA in a molar ratio of PAM/PMAA = 1, an intermolecular complex membrane was formed. This behaves as a chemical valve; its permeability can be controlled reversibly by changing the pH value. (C) 1994 John Wiley and Sons, Inc.
引用
收藏
页码：1079 / 1086
页数：8
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