Premium
Signal‐responsive gating of porous membranes by polymer brushes
Author(s) -
Ito Yoshihiro,
Soon Park Yong
Publication year - 2000
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/1099-1581(200003)11:3<136::aid-pat961>3.0.co;2-f
Subject(s) - membrane , materials science , polymer , permeation , porosity , chemical engineering , ionic bonding , signal (programming language) , synthetic membrane , polymer chemistry , composite material , chemistry , organic chemistry , ion , biochemistry , computer science , engineering , programming language
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 hygrogel‐type membranes, and was reversibly performed. Copyright © 2000 John Wiley & Sons, Ltd.