Abstract
A new theoretical approach of the isothermal crystallization of a thin polymer film is proposed. This model, derived from Evans' theory, is in very good agreement with a previous one, but is much more interesting because it makes it possible to calculate the transformed volume fraction anywhere in the film. The main effects of decreasing thickness are a slower average crystallization of the film and a decrease in the Avrami exponent caused by a slower crystallization of the polymer close to the surfaces.
A slight modification of the model allows us to calculate the isothermal crystallization kinetics at any point of the film when it contains two identical transcrystalline regions on its surfaces.
All the models are well verified by computer simulations.
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Billon, N., Escleine, J.M. & Haudin, J.M. Isothermal crystallization kinetics in a limited volume. A geometrical approach based on Evans' theory. Colloid & Polymer Sci 267, 668–680 (1989). https://doi.org/10.1007/BF01524369
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DOI: https://doi.org/10.1007/BF01524369