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Diffusion in Polymers below the Glass Transition Temperature : Comparison of Two Approaches Based on Free Volume Concepts
Center for the Study of Polymer Solvent Systems, Department of Chemical Engineering, Pennsylvania State University, University Park, PA 16802, USA
jld@psu.edu
Korean Journal of Chemical Engineering, May 2000, 17(3), 310-317(8), 10.1007/BF02699046
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Abstract
Theories based on free-volume concepts have been developed to characterize the self and mutual diffusion coefficients of low molecular weight penetrants in rubbery and glassy polymer-solvent systems. These theories are applicable over a wide range of temperatures and concentrations. In this paper, two alternative free-volume based approaches used to evaluate the solvent self-diffusion in glassy polymer-solvent systems are compared in terms of their differences and applicability.
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Vrentas JS, Duda JL, J. Polym. Sci. B: Polym. Phys., 15, 403 (1977)
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Vrentas JS, Duda JL, AIChE J., 25, 1 (1979)
Vrentas JS, Vrentas CM, J. Polym. Sci. B: Polym. Phys., 30, 1005 (1992)
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Zielinski JM, Duda JL, AIChE J., 38(3), 405 (1992)
