Polymeric surfactants for the new millennium: A pH-responsive, zwitterionic, schizophrenic diblock copolymer

被引：0
|
作者：
Liu, Shiyong [1 ]
Armes, Steven P. [1 ]
机构：
[1] School of Chemistry, Physics and Environmental Science, University of Sussex, Falmer, Brighton, E. Sussex, BN1 9QJ, United Kingdom
来源：
| 2002年 / Wiley-VCH Verlag卷 / 41期
关键词：
Micelles - Organic acids - pH effects - Precipitation (chemical) - Surface active agents - Synthesis (chemical);
D O I：
10.1002/1521-3773(20020415)41:83.0.CO;2-K
中图分类号：
学科分类号：
摘要：
Schizophrenic character: A novel zwitterionic AB diblock copolymer was prepared by atom-transfer radical polymerization (ATRP) of 2-(diethylamino)-ethyl methacrylate (DEA) and 4-vinyl benzoic acid (VBA). Both conventional micelles and inverted micelles can be formed in aqueous solution at ambient temperature, by controlling the solution pH. At low pH, VBA-core micelles (A) are formed, at high pH DEA-core micelles (B) are formed, and at neutral pH, the system precipitates (C; see figure).
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