Crystallization of bisphenol‐A polycarbonate. I. Influence of trimellitic acid tridecyloctyl ester on the kinetics of crystallization

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Abstract
The crystallization of bisphenol‐A polycarbonate plasticized by trimellitic acid tridecyloctyl ester (Morflex 525) has been studied. A half‐crystallization time of 100 min is observed at 170°C with 10% of plasticizer compared with a figure of 18,000 min for the unplasticized material. The kinetic study is limited to the primary crystallization process which can be described by an Avrami equation; however, the Avrami coefficients are much higher than usual. Studies on the effect of the preparation procedure of the samples and of premelting indicate that nucleation is at least partially heterogeneous.