Abstract: Glycidyl methacrylate grafted polypropylene (PP-g-GMA) was prepared in an internal mixer, which was used as a compatibilizer for PP/PA6 blends.The mechanical properties and morphology of compatibilized PP/PA6 blends were investigated. The graft rate of PP-g-GMA measured with titration method was 3.35 %. The tensile strength and notched impact strength of PP/PA6/PP-g-GMA blends increased by 32.4 % and 60.4 % than neat PP/PA6 blends when the addition of PP-g-GMA was 4 wt% and 8 wt%, respectively. The interface compatibility of PP/PA6 blends was significantly enhanced while adding PP-g-GMA. It meant that PP-g-GMA was an efficient compatibilizer for PP/PA6 blends.

Key words: polypropylene grafted glycidyl methacrylate, polypropylene, polyamide 6, blend, compatilizer, mechanical property