Premium
Gas‐transport properties through cation‐exchanged sulfonated polysulfone membranes
Author(s) -
Bum Park Ho,
Yong Nam Sang,
Won Rhim Ji,
Min Lee Jung,
Kim Sun E.,
Ran Kim Jung,
Moo Lee Young
Publication year - 2002
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.11200
Subject(s) - polysulfone , membrane , ionic bonding , polymer chemistry , polymer , metal , chemistry , infrared spectroscopy , fourier transform infrared spectroscopy , divalent , metal ions in aqueous solution , chemical engineering , inorganic chemistry , materials science , analytical chemistry (journal) , ion , organic chemistry , biochemistry , engineering
Sulfonated polysulfone (SPS) membranes were prepared, and the gas‐transport properties of the resulting ionic polymers were examined. Gas‐transport measurements were made on dense films of these polymers with a continuous flow technique. The sulfonation of polysulfone and the metal‐cation exchange of SPS were confirmed with Fourier transform infrared spectroscopy and electron spectroscopy for chemical analysis. The SPS membranes exchanged with the monovalent metal ions showed higher permeability coefficients than the SPS membranes exchanged with the multivalent metal ions, whereas the selectivities of all the metal‐cation‐exchanged sulfonated polysulfone (MeSPS) membranes for O 2 /N 2 and CO 2 /N 2 gas pairs were higher than those of SPS membranes. When the MeSPS membranes with metal cations of similar ionic radii were compared, the ideal selectivities of O 2 /N 2 and CO 2 /N 2 through MeSPS with divalent cations were higher than those through MeSPS with monovalent cations. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 2611–2617, 2002