Abstract: Maleic anhydride grafted EPDM (EPDM-g-MAH) was used as a compatibilizer for AES/PC (70:30) blends. When the rubber content in AES/PC blends was low, EPDM-g-MAH could reduce the size of the dispersed particle phase. When the dosage of EPDM-g-MAH was 3 phr and the rubber content of AES/PC blends was 21 %, the blends would maintain high tensile strength and high heat distortion temperature, while the notched impact strength will be nearly double.

Key words: acrylonitrile-ethylene propylene terpolymer-styrene copolymer, polycarbonate, Reactive compatibilization, phase morphology