Abstract: This paper introduced the research on compatibility in alloys of acrylonitrile-butadiene-styrene copolymer/polyethylene terephthalate (ABS/PET), using methyl methacrylate-butadiene-styrene copolymers (MBS), KT-18, KT-5A as compatibilizers. The alloys were prepared via twin-screw extrusion. It showed that the best loading of PET in the alloy was 20 % ~ 30 %. KT-18 constituted the best compatibilizer. When and the dosage of KT - 18 was 3 % ~ 5 %, the impact strength of ABS/PET alloy reached 8.79 kJ/m2.

Key words: acrylonitrile - butadiene - styrene copolymer, polyethylene terephthalate, alloy, compatibilizer