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Gas permeabilities of NH 3 ‐plasma‐treated polyethersulfone membranes
Author(s) -
Iwa T.,
Kumazawa H.,
Bae S.Y.
Publication year - 2004
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.20961
Subject(s) - membrane , permeation , permeability (electromagnetism) , diffusion , chemistry , langmuir , diffusion process , plasma , analytical chemistry (journal) , thermodynamics , polymer chemistry , chromatography , chemical engineering , aqueous solution , biochemistry , physics , knowledge management , innovation diffusion , quantum mechanics , computer science , engineering
The effect of NH 3 ‐plasma treatment on glassy polyethersulfone (PES) membranes upon the diffusion process for CO 2 , O 2 , and N 2 . was investigated from the permeability measurements. The permeation behavior for O 2 and CO 2 in untreated and NH 3 ‐plasma‐treated PES membranes was simulated well in terms of the dual‐mode mobility model. For O 2 transport, NH 3 ‐plasma treatment on PES membrane had a little influence on the diffusion process of Langmuir species and very little influence on the diffusion process of Henry's law species. For CO 2 transport, it promoted the transport of Henry's law mode but had very little influence on the transport process of Langmuir species. Both the mean permeability coefficient to CO 2 and the ideal separation factor for CO 2 relative to N 2 took maximum values at a treatment power of 40 W. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 94: 758–762, 2004
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