CALCULATION OF CONCENTRATION DEPENDENT MUTUAL DIFFUSION COEFFICIENTS FOR THE PENETRATION PERIOD OF SORPTION PROCESS IN POLYMER FILM
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概要
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A new method of calculating concentration dependent mutual diffusion coefficients was proposed for the penetration period of adsorption and desorption processes in polymer film. The diffusion equation for a slab based on a dissolved solid coordinate with constant surface concentration was solved numerically for the sorption process, assuming a power function for the concentration dependence of the diffusion coefficient. The solvent concentrations corresponding to the apparent diffusion coefficients, which were calculated easily from the experimental sorption rate curves of the penetration period, were correlated with the surface concentrations using the power value of the concentration dependence as the parameter. Using this correlation, the relation between the diffusion coefficient and the concentration was obtained easily by trial calculation.
- 社団法人 化学工学会の論文
著者
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YAMAMOTO Shuichi
Department of Ophthalmology, Chiba University Hospital
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Kobuchi Shigetoshi
Department Of Applied Chemistry And Chemical Engineering Yamaguchi University
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Sano Yuji
Department Of Applied Chemistry And Chemical Engineering Yamaguchi University
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Yamamoto Shuichi
Department Of Applied Chemistry And Chemical Engineering Yamaguchi University
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