Abstract This work describes the synthesis of GO, rGO and their nanocomposites with PEO. GO and rGO were prepared by the modified Hummers method and in-situ reduction of GO utilizing green reductant L (+) Ascorbic acid. The nanocomposites were characterized by Fourier-transform infrared spectroscopy (FT-IR), X-ray powder diffraction (XRD), Field emission scanning electron microscopy (FE-SEM), Thermogravimetric Analysis (TGA), and Universal Testing Machine (UTM). FT-IR and XRD confirmed the synthesis of GO and rGO. FE-SEM confirmed the uniformly exfoliated GO and rGO nanosheets in the polymer matrix. Hydrogen bonding was the main interaction mechanism for GO with PEO while no interaction was detected by FT-IR for rGO. Enhanced thermal stability was observed for both GO/PEO and rGO/PEO nanocomposites. The mechanical analysis showed an increase in Young’s modulus, tensile strength, and elongation at break for GO/PEO nanocomposites, which is attributed to the homogeneous dispersion and hydrophilic hydrogen bonding interaction of GO with PEO.

中文翻译：

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氧化石墨烯、还原氧化石墨烯及其与聚氧化乙烯纳米复合材料的合成与表征

摘要 这项工作描述了 GO、rGO 及其与 PEO 的纳米复合材料的合成。GO 和 rGO 是通过改进的 Hummers 方法和使用绿色还原剂 L(+) 抗坏血酸原位还原 GO 制备的。通过傅里叶变换红外光谱 (FT-IR)、X 射线粉末衍射 (XRD)、场发射扫描电子显微镜 (FE-SEM)、热重分析 (TGA) 和万能试验机 (UTM) 对纳米复合材料进行表征。FT-IR 和 XRD 证实了 GO 和 rGO 的合成。FE-SEM 证实了聚合物基质中均匀剥离的 GO 和 rGO 纳米片。氢键是 GO 与 PEO 的主要相互作用机制，而 rGO 的 FT-IR 未检测到相互作用。观察到 GO/PEO 和 rGO/PEO 纳米复合材料的热稳定性增强。