Crystallization kinetics of high polymers: Isotactic polystyrene

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Abstract
The crystallization kinetics of a sample of isotactic polystyrene have been measured at various temperatures. Despite the presence of secondary crystallization sufficient accuracy can be attained to enable an Avrami relationship with a constant integral value of n to be assigned to most of the rate curves. The interpretation of the Avrami constants in terms of crystallization by growth of spherical entities, produced at fixed sites, is verified by microscope observations.