The nonisothermal crystallization kinetics of surface fluorinated polypropylene/polypropylene blend

摘要

The surface fluorinated polypropylene/polypropylene blend (SFPP/PP) was obtained by direct fluorination of polypropylene particle with 3% F2/N2 gas and subsequently blending it with polypropylene particle and antioxidant 1010. The nonisothermal crystallization kinetics properties of SFPP/PP were investigated using differential scanning calorimetry and the results indicated the compatibility of SFPP/PP is good, the crystallization temperature T_o, T_c and crystallization activation energy ΔE are increased, whereas enthalpy ΔH_C are decreased with the incorporation of fluorine to PP. Several macrokinetic models such as Jeziorny, Ozawa and Mo are used to analyze the nonisothermal crystallization behavior of the blend, among which Mo equation supplies a convenient and reasonable kinetic approach to describe its crystallization process.