ABSTRACT
The melt blends of random copolymer of styrene-maleic anhydride (SMA) and commercial acrylonitrile-butadiene-styrene (ABS) resin were prepared by using the twin screw extruder. These blends combine the heat resistance and stiffness of SMA with the toughness and easy processibility of ABS resin. The compatibility of SMA/ABS was investigated by thermal and dynamic mechanical measurements. Inner shifts in transition temperatures (Rheovibron) and a single Tg (DSC) of intermediate value between those of the individual constituents, indicated the partial compatibility of the blends. The morphology of the blends by transmission electron microscopy has proved the good dispersion of the rubber phase. The processibility of these blends evaluated with capillary rheometer exhibited their flow behavior between those of the individual components. In addition, physical properties such as heat distortion temperatures, impact strength, tensile strength and modulus are also discussed in this paper.
