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Mechanism of gas transport in plasma treated glassy polymer films
Author(s) -
Sada E.,
Kumazawa H.,
Xu P.,
Kiyohara T.
Publication year - 1989
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.1989.070380408
Subject(s) - polysulfone , polyimide , diffusion , permeation , polymer , thermal diffusivity , plasma , materials science , population , oxygen , chemical engineering , polymer chemistry , glass transition , gaseous diffusion , membrane , analytical chemistry (journal) , chemistry , layer (electronics) , composite material , organic chemistry , thermodynamics , biochemistry , physics , demography , quantum mechanics , sociology , engineering , fuel cells
The effect of oxygen‐ and Ar‐plasma treatment on glassy polysulfone and polyimide films upon the gas diffusion process was investigated in the permeation of CO 2 and H 2 . The plasma treatment apparently induced a reduction of only the diffusivity of Henry's law population, while the diffusion coefficient of the Langmuir population was not altered by plasma treatment. The oxygen‐ and Ar‐plasma treatment on polysulfone films is favorable for permselectivity of H 2 relative to CO 2 . Such a surface modification of polyimide films appears to be ineffective for improvement of permselectivity of H 2 .