聚苯乙烯（PS）/丙烯腈-丁二烯-苯乙烯（ABS）共混物在旋转双螺杆挤出机中加工并通过注射成型。苯乙烯-(乙烯-丙烯)(SEP)、苯乙烯-(乙烯-丁烯)-苯乙烯(SEBS)和苯乙烯-丁二烯-苯乙烯(SBS)共聚物作为相容剂进行了测试。报告了流变、机械、热、热机械、光谱和形态行为。考虑到 SEP 的加入形成了脆性且不相容的共混物，增容剂的类型极大地影响了 PS/ABS 的最终性能。相比之下，SEBS分子结构两侧均含有苯乙烯端基，形成的PS/ABS共混物具有更高的延展性。然而，与 SBS 相比，它的性能较低。PS/ABS/SBS 共混物的扭矩流变增加，熔体流动指数 (MFI) 显着降低，表明组分之间的相互作用更显着。结果，与 PS 相比，冲击强度和断裂伸长率分别提高了 113.7% 和 379.3%。此外，弹性模量、拉伸强度、肖氏 D 硬度和热变形温度 (HDT) 均保持较高的结果，证实了 PS/ABS/SBS 共混物的协同效应。通过热重分析 (TG)，观察到 PS/ABS/SBS 共混物的温度升高了约 22 °C，质量损失了 50%，这可能是由于丙烯腈造成的。扫描电子显微镜 (SEM) 和原子力 (AFM) 分析强化了这些优异的结果，表明在 SBS 存在的情况下，ABS 在 PS 基体中具有更好的相容性和更均匀的分布。PS/ABS/SBS 共混结果表明其潜在应用领域包括电子产品、空调格栅和玩具。

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Polystyrene (PS)/acrylonitrile-butadiene-styrene (ABS) blends were processed in a corrotational twin-screw extruder and molded by injection. Styrene-(ethylene-propylene) (SEP), styrene-(ethylene-butylene)-styrene (SEBS), and styrene-butadiene-styrene (SBS) copolymers were tested as compatibilizing agents. The rheological, mechanical, thermal, thermomechanical, spectroscopic, and morphological behavior were reported. The type of compatibilizer greatly influences the final performance of the PS/ABS, considering that the incorporation of SEP formed a brittle and incompatible blend. In contrast, SEBS containing styrene terminal groups on both sides of the molecular structure, formed a PS/ABS blend with greater ductility. However, it has lower performance compared to SBS. The torque rheometry increased, and the melt flow index (MFI) reduced significantly for the PS/ABS/SBS blend, indicating more significant interaction between the components. As a result, gains of 113.7% and 379.3% in impact strength and elongation at break compared to PS. In addition, elastic modulus, tensile strength, Shore D hardness, and heat deflection temperature (HDT) maintained high results, confirming a synergistic effect of the PS/ABS/SBS blend. By thermogravimetry (TG), a gain of around 22 °C was observed in the PS/ABS/SBS blend for a mass loss of 50%, possibly due to acrylonitrile. Scanning electron microscopy (SEM) and atomic force (AFM) analyses reinforced these excellent results, revealing better compatibility and a more homogeneous distribution of ABS in the PS matrix in the presence of SBS. The PS/ABS/SBS blend results indicate potential applications such as electronics, air conditioning grilles, and toys.