Diffusion in Polymers below the Glass Transition Temperature : Comparison of Two Approaches Based on Free Volume Concepts

Narayan Ramesh; J. L. Duda

Korean Journal of Chemical Engineering, Vol.17, No.3, 310-317, May, 2000

Narayan Ramesh, and J. L. Duda^†

Center for the Study of Polymer Solvent Systems, Department of Chemical Engineering, Pennsylvania State University, University Park, PA 16802, USA

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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.

Keywords:Diffusivity;Self-Diffusion Coefficient;Polymers;Glass Transition;Free-Volume

[References]

Chow TS, Macromolecules, 13, 362 (1980)
Cohen MH, Turnbull D, J. Chem. Phys., 31, 1164 (1959)
Duda JL, Romdhane IH, Danner RP, J. Non-Cryst. Solids, 172-174, 715 (1994)
Ehlich D, Sillescu H, Macromolecules, 23, 1600 (1990)
Fujita H, Homopolym. Forsch., 3, 1 (1961)
Lodge TP, Lee JA, Frick TS, J. Polym. Sci. B: Polym. Phys., 28, 2607 (1990)
Murphy PG, Macdonald DA, Lickly TD, Food Chem. Toxicology, 30(3), 225 (1992)
Vrentas JS, Duda JL, J. Polym. Sci. B: Polym. Phys., 15, 403 (1977)
Vrentas JS, Duda JL, J. Polym. Sci. B: Polym. Phys., 15, 417 (1977)
Vrentas JS, Duda JL, J. Appl. Polym. Sci., 22, 2325 (1978)
Vrentas JS, Duda JL, AIChE J., 25, 1 (1979)
Vrentas JS, Vrentas CM, J. Polym. Sci. B: Polym. Phys., 30, 1005 (1992)
Vrentas JS, Vrentas CM, J. Polym. Sci. B: Polym. Phys., 31, 69 (1993)
Vrentas JS, Vrentas CM, Macromolecules, 27(17), 4684 (1994)
Vrentas JS, Vrentas CM, Macromolecules, 27(20), 5570 (1994)
Vrentas JS, Vrentas CM, Macromolecules, 29(9), 3272 (1996)
Vrentas JS, Vrentas CM, Eur. Polym. J., 34, 797 (1998)
Zielinski JM, Duda JL, AIChE J., 38(3), 405 (1992)

[Referenced By]

[1] Chow TS, Macromolecules, 13, 362 (1980)

[2] Cohen MH, Turnbull D, J. Chem. Phys., 31, 1164 (1959)

[3] Duda JL, Romdhane IH, Danner RP, J. Non-Cryst. Solids, 172-174, 715 (1994)

[4] Ehlich D, Sillescu H, Macromolecules, 23, 1600 (1990)

[5] Fujita H, Homopolym. Forsch., 3, 1 (1961)

[6] Lodge TP, Lee JA, Frick TS, J. Polym. Sci. B: Polym. Phys., 28, 2607 (1990)

[7] Murphy PG, Macdonald DA, Lickly TD, Food Chem. Toxicology, 30(3), 225 (1992)

[8] Vrentas JS, Duda JL, J. Polym. Sci. B: Polym. Phys., 15, 403 (1977)

[9] Vrentas JS, Duda JL, J. Polym. Sci. B: Polym. Phys., 15, 417 (1977)

[10] Vrentas JS, Duda JL, J. Appl. Polym. Sci., 22, 2325 (1978)

[11] Vrentas JS, Duda JL, AIChE J., 25, 1 (1979)

[12] Vrentas JS, Vrentas CM, J. Polym. Sci. B: Polym. Phys., 30, 1005 (1992)

[13] Vrentas JS, Vrentas CM, J. Polym. Sci. B: Polym. Phys., 31, 69 (1993)

[14] Vrentas JS, Vrentas CM, Macromolecules, 27(17), 4684 (1994)

[15] Vrentas JS, Vrentas CM, Macromolecules, 27(20), 5570 (1994)

[16] Vrentas JS, Vrentas CM, Macromolecules, 29(9), 3272 (1996)

[17] Vrentas JS, Vrentas CM, Eur. Polym. J., 34, 797 (1998)

[18] Zielinski JM, Duda JL, AIChE J., 38(3), 405 (1992)