Abstract
We investigated the crystallization behavior in mixtures of poly (ethylene terephthalate) (PET) and talc using the time-resolved light scattering. The time variation of the orientation fluctuation was measured using on Hv optical geometry, and the induction time, overall crystallization rate, and linear growth rate (G), were estimated by an invariant method. G was analyzed on the basis of the Hoffman-Lauritzen theory. As the crystallization temperature Tc increased, a regime transition from III to II was found to occur in the PET/talc mixture and the neat PET. For the PET/talc system, the overall crystallization rate increased with increasing talc content. G however was independent of talc content, i. e., talc acted as a nucleating agent. The mixture also shows high crystallinity at low mold temperatures in the injection molding process.
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