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Traveling wave solutions for case II diffusion in polymers

✍ Scribed by Thomas P. Witelski

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Volume
34
Category
Article
ISSN
0887-6266

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✦ Synopsis

Case I1 diffusion of penetrant liquids in polymer films is characterized by constant-velocity propagation of a phase interface. We review the development of viscoelastic models describing case I1 diffusion and then present a phase plane analysis for traveling wave solutions.

For simplified, piecewise-constant coefficient models we give closed-form analytic solutions showing the dependence on various physical parameters in both viscous and viscoelastic diffusive systems. We will also compare the results of our analysis with results from numerical simulations of more general models.

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