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TRANSPORT PHENOMENA IN GAS PERMEATION THROUGH GLASSY POLYMER MEMBRANES WITH CONCENTRATION-DEPENDENT SORPTION AND DIFFUSION PARAMETERS
Korean Journal of Chemical Engineering, July 1994, 11(3), 211-215(5), 10.1007/BF02697468
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Abstract
The modified dual-mode mobility model for permeation of a gas in glassy polymer membranes was combined with the extended dual-mode sorption model to take account of the plasticization effect of sorbed gas molecules on both sorption and diffusion processes. The combined model was further simplified by the introduction of a concentration of the mobile gas species. However, the observed pressure dependence of mean permeability coefficients of carbon dioxide in methylme-thacrylate-n-butyl acrylate copolymer and polymethylmethacrylate films at 30℃ and also that of oxy-gen in a polycarbonate film at 50℃ and 60℃ showed that a plasticization action of sorbed gas species has an influence on the diffusion process rather than on the sorption process, that is, were simulated by the modified dual-mode mobility model combined with the conventional dual-mode sorption model.
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Kamiya Y, Hirose T, Naito Y, Mizoguchi K, J. Polym. Sci. B: Polym. Phys., 26, 159 (1988)
Kamiya Y, Hirose T, Mizoguchi K, Terada K, J. Polym. Sci. B: Polym. Phys., 26, 1409 (1988)
Zhou S, Stern SA, J. Polym. Sci. B: Polym. Phys., 27, 205 (1989)
Sada E, Kumazawa H, Wang JS, J. Polym. Sci. B: Polym. Phys., 30, 105 (1992)
Suwandi MS, Stern SA, J. Polym. Sci. B: Polym. Phys., 11, 663 (1973)
Mauze GR, Stern SA, J. Membr. Sci., 12, 51 (1982)
Stern SA, Saxena V, J. Membr. Sci., 7, 47 (1980)
Sada E, Kumazawa H, Wang JS, J. Appl. Polym. Sci., 48, 939 (1993)
Sanders ES, Koros WJ, Hopfenberg HB, Stannett VT, J. Membr. Sci., 13, 161 (1983)
Ko SW, M.S. Thesis, Hanyang University, Seoul, Korea (1992)
