Influence of Calcium Carbonate on the Crystallization of Polypropylene at High Supercooling

This article describes how the Flash DSC was used to investigate the influence of calcium carbonate on the crystallization of filled polypropylene (PP) in the temperature range 120 °C to 0 °C. At low supercooling (above 80 °C), the presence of calcium carbonate reduces the crystallization rate of the -phase. Between 45 °C and 80 °C, the crystallization of the -phase is accelerated. The mesophase formation at low temperatures is not influenced by the filler.

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