This paper presents a groundbreaking study on the synergistic effect of combining Cloisite 30B (C30B) organoclay with styrene-butadiene-grafted glycidyl methacrylate (SbB-g-GMA), a dual-functional impact modifier and compatibilizer with the ultimate aim of developing high-performance materials based on polyethylene terephthalate (PET), and polystyrene (PS) with superior thermal and mechanical properties, thereby exploring the feasibility of recycling of these commonly used plastics via a simple melt blending approach. The morphology of the melt-mixed PET/PS blends and dispersion state of organoclay in the PET/PS/C30B nanocomposites in the presence and absence of the compatibilizer were analyzed by the X-ray diffraction, field emission scanning electron microscopy (FE-SEM), atomic force microscopy (AFM), and transmission electron microscopy (TEM). Furthermore, the thermal and mechanical properties of the nanocomposites were evaluated through TGA/DSC analysis and tensile and Izod impact tests. The microscopic images revealed that the addition of the SbB-g-GMA compatibilizer resulted in a superior dispersion of the nanoclay platelets. The composition of 70% PET, 30% PS, 7 phr SbB-g-GMA, and 3 phr C30B yielded the best dispersion of C30B and the most favorable thermomechanical properties in the PET/PS/SbB-g-GMA/C30B blend. Interestingly, the study found that using the nanoclay alone was insufficient to achieve compatibility between PET and PS. Optimal results were obtained when SbB-g-GMA was mixed into the PET/PS/C30B nanocomposite. The mechanical properties, including tensile and impact strength, modulus, elongation at break, as well as the thermal stability, exhibited significant improvements upon the addition of the synthesized SbB-g-GMA dual-functional compatibilizer compared to both the binary blends of PET/PS and the PET/PS/C30B nanocomposite.

本文对 Cloisite 30B (C30B) 有机粘土与苯乙烯-丁二烯接枝甲基丙烯酸缩水甘油酯 (SbB-g-GMA) 相结合的协同效应进行了开创性的研究，这是一种双功能抗冲改性剂和增容剂，最终目标是开发高抗冲性能。基于聚对苯二甲酸乙二醇酯（PET）和聚苯乙烯（PS）的高性能材料具有优异的热性能和机械性能，从而探索通过简单的熔融共混方法回收这些常用塑料的可行性。通过 X 射线衍射、场发射扫描电子显微镜 (FE-SEM) 分析了在存在和不存在增容剂的情况下熔融混合 PET/PS 共混物的形貌以及 PET/PS/C30B 纳米复合材料中有机粘土的分散状态。 ）、原子力显微镜（AFM）和透射电子显微镜（TEM）。此外，通过 TGA/DSC 分析以及拉伸和悬臂梁冲击测试评估了纳米复合材料的热性能和机械性能。显微图像显示，添加 SbB-g-GMA 增容剂可实现纳米粘土片的优异分散。70% PET、30% PS、7 份 SbB-g-GMA 和 3 份 C30B 的组合物在 PET/PS/SbB-g-GMA/C30B 共混物中产生了最佳的 C30B 分散性和最有利的热机械性能。有趣的是，研究发现单独使用纳米粘土不足以实现 PET 和 PS 之间的相容性。当 SbB-g-GMA 混合到 PET/PS/C30B 纳米复合材料中时，获得了最佳结果。与 PET/PET 的二元共混物相比，添加合成的 SbB-g-GMA 双功能增容剂后，机械性能（包括拉伸强度和冲击强度、模量、断裂伸长率以及热稳定性）表现出显着改善。 PS 和 PET/PS/C30B 纳米复合材料。