In this paper, reduced graphene oxide decorated with silver nanoparticle (rGO-Ag) nanohybrids were prepared using an environmentally friendly approach and incorporated as reinforcement in poly(vinylidene fluoride)-poly(methyl methacrylate) blends via a melt mixing process. The microstructure of rGO-Ag nanohybrids and its effect on the microstructure, mechanical, thermal, and electrical properties of the PVDF/PMM/rGO-Ag was studied using Fourier transform infrared (FTIR), Raman spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), tensile, thermogravimetric analysis (TGA), and impedance spectroscopy methods. FTIR and TEM analysis confirmed that rGO-Ag successfully synthesized and Ag nanoparticles are located on the rGO surface. The tensile analysis demonstrated that incorporating 1 wt.% of rGO-Ag in PVDF/PMMA blend increases Young’s modulus and strength of nanocomposite up to 31% and 35%, respectively. The Halpin-Tsai model was also used for PVDF/PMMA/rGO-Ag nanocomposites, and the results confirmed that this model works well to predict the tensile modulus. Impedance spectroscopy analysis showed that the presence of rGO-Ag nanohybrids in PVDF/PMMA blend effectively enhanced the conductivity of PVDF/PMMA blend. TGA results demonstrated that the presence of rGO-Ag nanohybrids enhanced the thermal stability of nanocomposites and increased the degradation temperature of PVDF/PMMA/rGO-Ag nanocomposites in the range of 20°C compared to PVDF/PMMA blend.

中文翻译：

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原位还原氧化石墨烯纳米杂化物修饰的银纳米颗粒改善了聚偏二氟乙烯/聚甲基丙烯酸甲酯共​​混物的性能

本文采用环保方法制备了银纳米颗粒（rGO-Ag）纳米杂化物装饰的还原氧化石墨烯，并通过熔融混合工艺将其作为增强材料掺入聚偏二氟乙烯-聚甲基丙烯酸甲酯共​​混物中。利用傅里叶变换红外 (FTIR)、拉曼光谱、X 射线衍射 (XRD) 研究了 rGO-Ag 纳米杂化物的微观结构及其对 PVDF/PMM/rGO-Ag 微观结构、机械、热和电性能的影响、扫描电子显微镜 (SEM)、透射电子显微镜 (TEM)、拉伸、热重分析 (TGA) 和阻抗谱方法。 FTIR和TEM分析证实rGO-Ag成功合成并且Ag纳米颗粒位于rGO表面。拉伸分析表明，在 PVDF/PMMA 混合物中加入 1 wt.% 的 rGO-Ag 可使纳米复合材料的杨氏模量和强度分别提高 31% 和 35%。 Halpin-Tsai 模型也用于 PVDF/PMMA/rGO-Ag 纳米复合材料，结果证实该模型可以很好地预测拉伸模量。阻抗谱分析表明PVDF/PMMA共混物中rGO-Ag纳米杂化物的存在有效增强了PVDF/PMMA共混物的电导率。 TGA 结果表明，与 PVDF/PMMA 共混物相比，rGO-Ag 纳米杂化物的存在增强了纳米复合材料的热稳定性，并将 PVDF/PMMA/rGO-Ag 纳米复合材料的降解温度提高了 20°C。