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Numerical examination of the dual‐mode model for permeation, sorption, and desorption rate curves
Author(s) -
Toi Keio,
Saito Koichi,
Suganuma Yasushi,
Ito Tomoyasu,
Ikemoto Isao
Publication year - 1992
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.1992.070461106
Subject(s) - sorption , permeation , desorption , diffusion , thermodynamics , langmuir , fick's laws of diffusion , analytical chemistry (journal) , chemistry , materials science , adsorption , chromatography , membrane , physics , biochemistry
Numerical solutions were applied to the dual‐mode sorption and transport model for gas permeation, sorption, and desorption rate curves allowing for mobility of the Langmuir component. Satisfactory agreement is obtained between integral diffusion coefficient from sorption and desorption rate curves and apparent diffusion coefficient from permeation rate curves (time lag method). These rate curves were also compared to the curves predicted by Fickian‐type diffusion equations. © 1992 John Wiley & Sons, Inc.