Abstract: The effect of three kinds of compatibilizers on the mechanical property and melt flow rate of poly(butylenes terephthalate)/acrylonitrile-butadiene-styrene copolymer (PBT/ABS) alloys was studied. The interface property, compatibility, and crystallinity of PBT/ABS alloy were characterized using scanning electron microscope (SEM) and differential scanning calorimeter (DSC). It was found that the compatibility of PBT/ABS alloys could be effectively improved by adding a compatibilizer containing epoxy functional groups, KS-TD-00202, as a result, the notched impact strength was obviously enhanced without reducing the tensile strength, flexural strength, and processing properties. In addition, the crystallinity of PBT in the alloy was also increased.

Key words: acrylonitrile-butadiene-styrene copolymer, poly(butylenes terephthalate), alloy, compatibilizer, crystallinity