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Preparation and Properties of Nanoporous Triblock Copolymer Membranes
Author(s) -
Liu Guojun,
Ding Jianfu,
Stewart Sean
Publication year - 1999
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/(sici)1521-3773(19990315)38:6<835::aid-anie835>3.0.co;2-r
Subject(s) - copolymer , membrane , materials science , nanoporous , casting , chemical engineering , polymer , solvent , permeability (electromagnetism) , polymer chemistry , composite material , chemistry , nanotechnology , organic chemistry , engineering , biochemistry
“ Unplug those pores!” could be a slogan common to cosmetologists and polymer chemists. Membranes with nanochannels can be obtained by first forming a film by casting a solution of a triblock and homopolymer mixture, then selectively cross‐linking domains in the film by photolysis, and finally forming nanochannels through removal of the homopolymer by solvent extraction. Such membranes are not liquid permeable but have gas‐permeability constants about six orders of magnitude higher than that of low‐density polyethylene films.