Graphene is a potential reinforcing material for polymeric materials due to high aspect ratio, surface area and electrical and mechanical properties. In this work, thermally reduced graphene oxide (TRGO)/acrylonitrile butadiene styrene (ABS) composites were developed using combined solution mixing and melt mixing techniques. The effect of wt% of pristine graphite and TRGO on the mechanical and thermal properties of composites was studied. Graphene oxide (GO) was prepared from graphite powder using improved Hummers’ method followed by thermal reduction to obtain TRGO. Characterization of GO, TRGO and as-developed ABS composites was performed using Fourier transmission infrared spectroscopy, scanning electron microscopy, atomic force microscopy, differential scanning calorimetry and thermogravimetric analysis. Tensile properties were determined by testing injection-molded dumbbell-shaped samples. The results showed that tensile properties of TRGO/ABS composites increased significantly at 0.2 wt% loading compared to corresponding graphite/ABS composites. However, increased content of both fillers decreased mechanical properties of the composites. TRGO, at 0.2 wt% loading, increased glass transition temperature of ABS by ca.7 °C. TRGO neither increased nor decreased thermal stability of ABS composites. This study showed that combined solution and melt mixing technique can significantly improve dispersion of TRGO in ABS matrix.

石墨烯由于高的纵横比，表面积以及电和机械性能而成为聚合物材料的潜在增强材料。在这项工作中，使用混合溶液混合和熔融混合技术开发了热还原氧化石墨烯（TRGO）/丙烯腈丁二烯苯乙烯（ABS）复合材料。研究了原始石墨和TRGO的重量百分比对复合材料力学性能和热性能的影响。使用改进的Hummers方法由石墨粉制备氧化石墨烯（GO），然后热还原以获得TRGO。使用傅里叶透射红外光谱，扫描电子显微镜，原子力显微镜，差示扫描量热法和热重分析对GO，TRGO和已开发的ABS复合材料进行表征。通过测试注射成型的哑铃形样品来确定拉伸性能。结果表明，与相应的石墨/ ABS复合材料相比，TRGO / ABS复合材料的拉伸性能在0.2 wt％的负载下显着提高。然而，两种填料含量的增加降低了复合材料的机械性能。TRGO在0.2 wt％的负载下可使ABS的玻璃化转变温度提高约7°C。TRGO既没有增加也没有降低ABS复合材料的热稳定性。这项研究表明，固溶和熔融混合技术可以显着提高TRGO在ABS基体中的分散性。两种填料含量的增加都降低了复合材料的机械性能。TRGO在0.2 wt％的负载下可使ABS的玻璃化转变温度提高约7°C。TRGO既没有增加也没有降低ABS复合材料的热稳定性。这项研究表明，固溶和熔融混合技术可以显着提高TRGO在ABS基体中的分散性。两种填料含量的增加都降低了复合材料的机械性能。TRGO在0.2 wt％的负载下可使ABS的玻璃化转变温度提高约7°C。TRGO既没有增加也没有降低ABS复合材料的热稳定性。这项研究表明，固溶和熔融混合技术可以显着提高TRGO在ABS基体中的分散性。