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Supported Lyotropic Liquid‐Crystal Polymer Membranes: Promising Materials for Molecular‐Size‐Selective Aqueous Nanofiltration
Author(s) -
Zhou M.,
Kidd T. J.,
Noble R. D.,
Gin D. L.
Publication year - 2005
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200500444
Subject(s) - polysulfone , membrane , nanofiltration , materials science , dispersity , aqueous solution , polymer , chemical engineering , liquid crystal , lyotropic , molecule , lyotropic liquid crystal , molecular sieve , nanotechnology , polymer chemistry , organic chemistry , chemistry , liquid crystalline , composite material , biochemistry , optoelectronics , adsorption , engineering
The ordered monodisperse ionic channels existing in lyotropic liquid‐crystal (LLC) polymer films allow only the passage of water‐soluble molecules which are smaller than the ∼ 1.2 nm diameter of the channels. When formed on an ultraporous polysulfone (PSf) support, the films are used effectively as size‐selective sieves for water‐soluble molecules. These membranes are able to completely reject molecules larger than their pore sizes.