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Stress Effects in Drying Polymer Films

  • S. Y. Tam (a1), L. E. Scriven (a2) and H. K. Stolarski (a1)


A model is developed to predict the magnitude and pattern of stress due to drying of polymer films. This model combines diffusion-and-convection equation with large deformation elasto-viscoplasticity, utilizing concentration dependent elastic and viscoplastic material properties to better represent the behavior of drying thin films.

The results show that the highest stress occurs at film surface where the concentration depletion is the highest. The magnitude of this stress is induced by increasing mass transfer across the film surface but reduced by increasing diffusion coefficient. The edge effect is significant but local, limited to about four film thicknesses. Similarly, change in substrate induces extra stress.



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Stress Effects in Drying Polymer Films

  • S. Y. Tam (a1), L. E. Scriven (a2) and H. K. Stolarski (a1)


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