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Preparation of porous membranes grafted with poly(spiropyran‐containing methacrylate) and photocontrol of permeability
Author(s) -
Chung DongJune,
Ito Yoshihiro,
Imanishi Yukio
Publication year - 1994
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1994.070511207
Subject(s) - spiropyran , copolymer , membrane , polymer chemistry , irradiation , permeability (electromagnetism) , methacrylate , merocyanine , ultraviolet light , materials science , solvent , ultraviolet , polymer , swelling , methyl methacrylate , chemistry , chemical engineering , photochemistry , photochromism , organic chemistry , composite material , biochemistry , physics , optoelectronics , nuclear physics , engineering
Graft copolymerization of spiropyran‐containing methacrylate (SPMMA) and acrylamide (AM) onto the surface of a porous polymer membrane was carried out. The permeability of the graft membrane varied with ultraviolet (UV) ‐ or visible‐light irradiation. It was found that the change by UV‐light irradiation of the permeability of the H 2 O/CH 3 OH mixture through the SPMMA/AM‐grafted membrane is related to the change by UV‐light irradiation of the solubility, i.e., the chain extension, of the graft copolymer in the mixed solvent. When the free SPMMA/AM copolymer becomes insoluble in the H 2 O/CH 3 OH mixture by UV‐light irradiation, the permeability of the H 2 O/CH 3 OH mixture through the SPMMA/AM‐grafted membrane is increased. © 1994 John Wiley & Sons, Inc.