LAUSR

In this study, the isothermal crystallization kinetics of poly(ethylene terephthalate) (PET) filled with 0 to 5 wt% alumina (Al2O3) nanoparticles (NPs) has been investigated at a wide range of defined crystallization temperatures (i.e., 190–220 °C) using differential scanning calorimetry (DSC). The obtained DSC data (experimentally) under isothermal condition was compared with the calculated data obtained from each macrokinetic equation of Avrami, Tobin, Malkin, and Urbanovici–Segal models using data fitting procedure. The goodness of best fit for the qualitative analysis of isothermal crystallization data obtained from each model has been evaluated using nonlinear multivariable regression program. The obtained results from four distinct models are compared based on isothermal kinetic parameters and the quality of the fitted data. The Avrami, Malkin, and Urbanovici–Segal models have appropriately described the isothermal crystallization kinetics, whereas the Tobin model was less satisfactory in describing the present system.