Hollow microspheres and aqueous phase behavior of pH-responsive poly(methyl methacrylate-co-methacrylic acid) copolymers with a blocky comonomer distribution

被引：11
|
作者：
Manokruang, Kiattikhun
Manias, Evangelos [1 ]
机构：
[1] Penn State Univ, Polymer Nanostruct Lab, CSPS, University Pk, PA 16802 USA
来源：
MATERIALS LETTERS | 2009年 / 63卷 / 13-14期
基金：
美国国家科学基金会;
关键词：
Smart polymers; Stimulus-response; Tunable copolymers; Encapsulating hollow spheres; pH-triggered release; TO-GLOBULE TRANSITION; MICROCAPSULES; POLYMERS; SYSTEMS;
D O I：
10.1016/j.matlet.2009.01.046
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Copolymers of methyl methacrylate (MMA) and methacrylic acid (MAA) were prepared by partial hydrolysis of PMMA in bad solvent. These copolymers evidently have a blocky comonomer distribution -strands of predominantly MMA or MAA across the polymer- and show sharp transitions in aqueous solution upon pH change. Additionally, their hollow microcapsules show an exceptional and prolonged stability at acidic conditions (pH 2) and pH-triggered release at physiological conditions. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：1144 / 1147
页数：4
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