WAXS AND SAXS INVESTIGATION OF POLYPROPYLENE CRYSTALLINE PHASE IN BLENDS WITH HIGH-IMPACT POLYSTYRENE AND COMPATIBILIZERS

On the basis of combination of wide-angle and small-angle X-ray scatte ring, the character of the polypropylene crystalline phase and its con tent were studied in polypropylene-high impact polystyrene blends, com patibilized by styrene-butadiene block copolymers. Addition of a copol ymer slightly reduces the crystallinity of polypropylene. In the absen ce of the compatibilizer no miscibility of the components was observed . In all samples polypropylene maintains its alpha-crystalline phase.