The non-isothermal crystallization kinetics of polypropylene after DSC calibration on cooling

Abstract

The effect of the temperature scale on the non-isothermal crystallization of a polypropylene is studied with the Nakamura and a Tobin-type equation for nonisothermal crystallization. The calibration on cooling of DSC data is performed and the scanning rate dependence of the sampleâ s thermal resistance is evaluated and taken into account, to correct the non-isothermal crystallization data obtained from the DSC measurements. The description of the crystallization is performed with only one varying parameter, which changes regularly with the scanning rate, making possible predictions of real non-isothermal crystallization behaviour at intermediate or high scanning rates.