In the present study, it was focused on developing mechanically stronger and thermally more stable polyvinyl chloride (PVC) composites by using green reduced graphene oxide (GRGO) filler to strengthen the negative features of PVC. For this purpose, GRGO reduced by vitamin C (ascorbic acid) with antibacterial properties was selected as filler. The PVC/GRGO composites were produced via colloidal blending method at different amounts of GRGO in PVC matrix (0.1, 0.3, 0.5 and 1% by weight), while pure PVC was also produced for comparison. The XRD and FTIR results showed that GRGO incorporated in the polymer matrix; this finding was also evident in SEM analysis. TGA and DSC analyses showed that the composite with 1% loading content of GRGO provided an important improvement on the thermal stability. The tensile strength and hardness of the composite having 0.1% GRGO increased by 42% and 98%, respectively. SEM image of PVC/GRGO-0.1 composite showed the galleries of GRGO filled with PVC. As a consequence, thermal and mechanical properties of PVC can be altered by changing loading content of GRGO. Moreover, the GRGO may be a good candidate for substitution of harmful fillers for PVC-based products.

中文翻译：

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绿色还原氧化石墨烯制备新型PVC复合材料及其对热力学性能的影响

在本研究中，它的重点是通过使用绿色还原氧化石墨烯 (GRGO) 填料来增强 PVC 的负面特性，从而开发机械强度更高且热稳定性更高的聚氯乙烯 (PVC) 复合材料。为此，选择了具有抗菌特性的维生素 C（抗坏血酸）还原的 GRGO 作为填充剂。PVC/GRGO 复合材料是通过胶体共混方法在 PVC 基质中不同量的 GRGO（0.1、0.3、0.5 和 1% 重量）下生产的，同时也生产纯 PVC 以进行比较。XRD和FTIR结果表明GRGO掺入聚合物基体中；这一发现在 SEM 分析中也很明显。TGA 和 DSC 分析表明，GRGO 负载量为 1% 的复合材料显着提高了热稳定性。含有 0.1% GRGO 的复合材料的拉伸强度和硬度分别增加了 42% 和 98%。PVC/GRGO-0.1 复合材料的 SEM 图像显示 GRGO 的画廊充满了 PVC。因此，可以通过改变 GRGO 的负载量来改变 PVC 的热性能和机械性能。此外，GRGO 可能是替代 PVC 产品有害填料的良好候选者。