Abstract: The nonisothermal crystallization behavior of poly(ε-caprolactone) was studied by DSC and XRD, the crystallization kinetics was analyzed using Ozawa and Jeziorny equations. The obtained Avrami index n is about 4, which demonstrates a three-dimensional spherulite growth on homogengous nuclei. Secondary crystallization process was observed when the relative crystallinity was 98 %, which was affected by the degree of supercooling.

Key words: poly(ε-caprolactone), nonisothermal crystallization kinetics, secondary crystallization, Ozawa equation, Jeziorny equation