PHASE FORMATION AND DEVELOPMENT IN POLYPROPYLENE/POLYSTYRENE BLENDS
PP/PS共混体系相结构形成与演变

The phase formation and development of polypropylene/polystyrene (PP/PS) blends during mixing were investigated by pattern analysis of scanning electron microsc opy.The effect of compatibilization of styrene-ethylene-propylene block copoly mer (SEP) on polypropylene/polystyrene (PP/PS) was proved by small angle laser sc attering (SALS),which confirmed the validity of SALS to describe the morphology of blends.The morphology development was investigated by analysing the variation of phase dimension d_g.Further,the fractal character of distribution of p h ase dimension was examined in terms of distribution function to study the dynami cs of phase dispersion.