Polypropylene (PP) blends with acrylonitrile-butadiene-styrene (ABS) were prepared using the styrene-ethylene-butylene-styrene copolymer (SEBS) as a compatibilizing agent. The blends were prepared in a co-rotational twin-screw extruder and injection molded. Torque rheometry, Izod impact strength, tensile strength, heat deflection temperature (HDT), differential scanning calorimetry, thermogravimetry, and scanning electron microscopy properties were investigated. The results showed that there was an increase in the torque of PA6/ABS blends with SEBS addition. The PP/ABS/SEBS (60/25/15%) blend showed significant improvement in impact strength, elongation at break, thermal stability, and HDT compared with neat PP. The elastic modulus and tensile strength have not been significantly reduced. The degree of crystallinity and the crystalline melting temperature increased, indicating a nucleating effect of ABS. The PP/ABS blends compatibilized with 12.5% and 15% SEBS presented morphology with well-distributed fine ABS particles with good interfacial adhesion. As a result, thermal stability has been improved over pure PP and the mechanical properties have been increased, especially impact strength. In general, the addition of the SEBS copolymer as the PP/ABS blend compatibilizer has the advantage of refining the blend's morphology, increasing its toughness and thermal stability, without jeopardizing other PP properties.

中文翻译：

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通过机械、热、热机械性能和形态评估 SEBS 共聚物与 PP/ABS 共混物的相容性

使用苯乙烯-乙烯-丁烯-苯乙烯共聚物 (SEBS) 作为增容剂制备聚丙烯 (PP) 与丙烯腈-丁二烯-苯乙烯 (ABS) 共混物。共混物在同向双螺杆挤出机中制备并注塑。研究了扭矩流变测定法、悬臂梁式冲击强度、拉伸强度、热变形温度 (HDT)、差示扫描量热法、热重法和扫描电子显微镜性能。结果表明，加入 SEBS 后 PA6/ABS 共混物的扭矩增加。与纯 PP 相比，PP/ABS/SEBS (60/25/15%) 共混物在冲击强度、断裂伸长率、热稳定性和 HDT 方面有显着改善。弹性模量和拉伸强度没有显着降低。结晶度和结晶熔融温度升高，表明 ABS 具有成核作用。与 12.5% 和 15% SEBS 相容的 PP/ABS 共混物呈现出具有良好界面附着力且分布良好的细 ABS 颗粒的形态。因此，与纯 PP 相比，热稳定性有所提高，机械性能也有所提高，尤其是冲击强度。通常，添加 SEBS 共聚物作为 PP/ABS 共混物增容剂具有改善共混物形态、增加其韧性和热稳定性的优势，而不会危及其他 PP 性能。与纯 PP 相比，热稳定性有所提高，机械性能也有所提高，尤其是冲击强度。通常，添加 SEBS 共聚物作为 PP/ABS 共混物增容剂具有改善共混物形态、增加其韧性和热稳定性的优势，而不会危及其他 PP 性能。与纯 PP 相比，热稳定性有所提高，机械性能也有所提高，尤其是冲击强度。通常，添加 SEBS 共聚物作为 PP/ABS 共混物增容剂具有改善共混物形态、增加其韧性和热稳定性的优势，而不会危及其他 PP 性能。