THERMAL TRANSITIONS, MICROSTRUCTURE AND MISCIBILITY IN TERNARY POLYBLENDS BASED ON POLY(VINYLIDENE FLUORIDE)

The morphology, microstructure and compatibility of binary and ternary polyblends based on poly(vinylidene fluoride) have been studied by means of glass transition temperature, isothermal crystallization kinetics analysis and scanning electron microscopy in order to determine the possibilities offered by poly(vinyl acetate) for compatibilizing poly(vinylidene fluoride) and polystyrene. Calorimetric and dynamic mechanical analyses demonstrate that poly(vinyl acetate) tends to compatibilize' blends of PVF2/PS, although the results of the two analyses do not agree with each other; we presume that this is due to differences in the techniques employed.