ABSTRACT The present study reports the synthesis of amine functionalised Graphene Oxide by two different methods, one by a modified Bucherer reaction and the other by using dodecyl amine. The synthesised amine functionalised Graphene oxide by modified Bucherer reaction (AGO) and by using dodecyl amine (DGO) was characterised by Fourier transform infra-red spectroscopy (FTIR), X-ray diffraction analysis (XRD), Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), and Raman spectroscopy. A series of natural rubber (NR)-AGO and NR-DGO nanocomposites with varying compositions of AGO and DGO were prepared by the latex mixing method. The morphological, mechanical, and dielectric properties of the nanocomposites were analysed by SEM, TEM, universal testing machine (UTM), and impedance analyser. The results obtained for NR-AGO and NR-DGO nanocomposites revealed enhancement in mechanical and dielectric properties from neat NR and NR-Graphene Oxide (GO) nanocomposites. The tensile strength of NR has been improved by almost 70%, tensile modulus (300% elongation) by 85%, and tear strength by 67% on the addition of 0.5 phr of AGO and by the addition of 0.5 phr DGO, the tensile strength of NR has been improved by 74%, tensile modulus (300% elongation) by 87% and tear strength by 73%. GRAPHICAL ABSTRACT

中文翻译：

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通过掺入胺官能化氧化石墨烯对天然橡胶纳米复合材料的研究

摘要本研究报告了通过两种不同的方法合成胺官能化氧化石墨烯，一种是通过改进的布齐勒反应，另一种是使用十二烷基胺。通过改进的布齐勒反应 (AGO) 和使用十二烷基胺 (DGO) 合成的胺官能化氧化石墨烯通过傅里叶变换红外光谱 (FTIR)、X 射线衍射分析 (XRD)、扫描电子显微镜 (SEM)、透射电子显微镜 (TEM) 和拉曼光谱。通过乳胶混合法制备了一系列具有不同 AGO 和 DGO 组成的天然橡胶 (NR)-AGO 和 NR-DGO 纳米复合材料。通过SEM、TEM、万能试验机(UTM)和阻抗分析仪分析纳米复合材料的形态、机械和介电性能。NR-AGO 和 NR-DGO 纳米复合材料的结果表明，纯 NR 和 NR-氧化石墨烯 (GO) 纳米复合材料的机械和介电性能有所增强。添加 0.5 份 AGO 和 0.5 份 DGO 后，NR 的拉伸强度提高了近 70%，拉伸模量（300% 伸长率）提高了 85%，撕裂强度提高了 67% NR 的抗拉强度提高了 74%，拉伸模量（300% 伸长率）提高了 87%，撕裂强度提高了 73%。图形概要 NR 的拉伸强度提高了 74%，拉伸模量（300% 伸长率）提高了 87%，撕裂强度提高了 73%。图形概要 NR 的拉伸强度提高了 74%，拉伸模量（300% 伸长率）提高了 87%，撕裂强度提高了 73%。图形概要