Signal-responsive gating of porous membranes by polymer brushes

被引：1
|
作者：
Ito, Y [1 ]
Park, YS
机构：
[1] Univ Tokushima, Dept Biol Sci & Technol, Fac Engn, Tokushima 7708506, Japan
[2] Korea Inst Sci & Technol, Ctr Facilitated Transport Membrane, Seoul 130650, South Korea
来源：
POLYMERS FOR ADVANCED TECHNOLOGIES | 2000年 / 11卷 / 03期
关键词：
signal-responsiveness; porous membrane; polymer brush; permeability; intelligent material;
D O I：
10.1002/1099-1581(200003)11:3<136::AID-PAT961>3.3.CO;2-6
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Various types of signal-responsive polymers were grafted on surfaces of porous membranes as polymer brushes. The grafted polymers shrank and extended in response to environmental signals, such as pH, ionic strength, temperature, redox reaction and photo-irradiation. The pore size was regulated by the extent of the polymer brush. The phenomenon was observed in situ by atomic force microscopy. As a result, the substance permeation through the porous membrane was controlled in response to the signals. The permeation control was rapid in comparison with hydrogel-type membranes, and was reversibly performed. Copyright (C) 2000 John Wiley & Sons Ltd.
引用
收藏
页码：136 / 144
页数：9
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