Studies on natural rubber nanocomposites by incorporating amine functionalised graphene oxide

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%.

Copper alumina @ poly (aniline-co-indole) nanocomposites: synthesis, characterization, electrical properties and gas sensing applications

“…This result is in good agreement with the functionalized graphene oxide reinforced polymer composites. 31 The 5 wt% composite has the most regularity and ordered arrangements (in good agreement with the TEM analysis) and hence has the highest conductivity among other copolymer nanocomposites. The agglomeration of nanoparticles at higher loadings reduces the regularity of the polymeric materials.…”

“…This result is in good agreement with the functionalized graphene oxide reinforced polymer composites. 31 …”

High Barrier Properties of Butyl Rubber Composites Containing Liquid Rubber and Graphene Oxide

“…After the addition of KGO, the crosslink density of KGO/IIR composites decreased. This was because the silane coupling agent attached to the surface of GO may have hindered the crosslinking reaction between the free radicals generated by GO with the rubber [ 37 ]. However, the introduction of a silane coupling agent improves the GO dispersion as more interfacial layers formed between the GO and the rubber matrix, contributing to the airtightness of the composites [ 38 , 39 ].…”

A combined experimental and molecular dynamics simulation study on customizing surface chemistry of graphene oxide toward high‐performance natural rubber composites

“…Various methods were used to modify GO to improve its dispersion in the NR matrix. For instance, Jose and Susamma 10 modified GO with ammonia, and 0.5 phr of the resulting amine‐functionalized GO improved the tensile strength of NR by almost 70%. Jiang et al 11 .…”