Nonisothermal crystallization behavior and kinetics of isotactic polypropylene/ethylene-octene blends. Part II: Modeling of crystallization kinetics

By applying the experimental data described in Part I, the non-isothermal crystallization kinetics of isotactic polypropylene/ethylene-octene blends have been mathematically modeled. The commonly used Avrami, Ozawa, Mo and Urbanovici-Segal models were used to model the crystallization kinetics, and it appears that Mo and Urbanovici-Segal models can well describe the non-isothermal crystallization kinetics of PP/POE blends. The data processing indicates that a small amount of POE can enhance the kinetic crystallizability because of heterogeneous nucleation, but excessive POE would in turn reduce the kinetic crystallizability by blocking the crystallization of PP. (C) 2010 Elsevier Ltd. All rights reserved.