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Rubber nanocomposites have emerged as one of the advanced materials in recent years. The aim of this work was to homogeneously disperse graphene oxide (GO) sheets into Nitrile Butadiene Rubber (NBR) and investigate the characteristics of GO/NBR nanocomposite without vulcanization. A suitable solvent was found to dissolve dry NBR while GO was exfoliated completely in an aqueous base solution using sonication. GO was dispersed into NBR at different loadings by solution mixing to produce unvulcanized GO/NBR nanocomposites. Scanning Electron Microscopy (SEM), Fourier-Transform Infrared Spectroscopy (FTIR), and X-Ray Diffraction (XRD) were used to characterize the samples. Furthermore, mechanical and electrical properties of unvulcanized GO/NBR nanocomposites were carried out to determine the influence of GO on the NBR properties. The results showed that the modulus of GO/NBR nanocomposite at 1 wt% of GO was enhanced by about 238% compared with unfilled NBR. These results provide insight into the properties of unvulcanized GO/NBR nanocomposite for application as coatings or adhesives.

Nanocomposites elastomers are being developed in the field of nanomaterials as it has low weight and high properties compared to the conventional rubbers. Acrylonitrile butadiene rubber (NBR) is used in automobile parts due to its ability to resist oil. In this research, Carbon Black nanoparticles (CBnp) type FEF N550 was used to reinforce this rubber to reduce the swelling ratio. Therefore, physicochemical characteristics were investigated for five different samples of vulcanized CBnp/NBR nanocomposites with 0, 0.2, 0.6, 1.2 and 2.4 phr of CBnp using the solution mixing method. The homogeneity of these nanocomposites was evaluated by Scanning Electron Microscopy (SEM) and X-ray Diffraction (XRD). Furthermore, the influence of different contents of CBnp on the tensile strength was analyzed. The results showed that the crosslinking densities in the CBnp/NBR nanocomposites structure have been improved compared with the neat vulcanized NBR and the mechanical properties as well. t’s an essential result which can employ it to prepare washers (rubber rings) resist against oils for several applications.

Exploring and adjusting techniques to synthesis Graphene Nano-sheets (GNS) becomes strongly pursued due to the unique physical and mechanical properties in the desired applications. In this work, Multi-layer thin films of (GNS) were deposited on glass slides using a non-premixed flame technique. The aim was to prepare the homogeneous structure of films with fewer defects. Propane gas was used at monitored temperatures (400-500)°C, under atmospheric pressure. Morphological characteristics of (GNS) were analyzed by optical and Scanning Electron Microscopy (SEM). Furthermore, Ultraviolet-Visible (UV-Vis) spectrometer was used and showed high transmittance via the prepared films which close to nano-size thickness, it increased with increasing the temperature corresponding to about 13 and 11 layers at 400°C and 500°C respectively. The x-ray diffraction (XRD) test illustrated the polycrystalline pattern of (GNS) with sharp peaks at 2θ= 14.22° and 2θ=17.03° that corresponds to the interlayer distances of 6.22 Å and 5.2 Å respectively. However, the broad peak at 2θ= 25.9° for (002) direction matches up with an interlayer space of 3.43Å which refers to ordinary graphite layers presence. The concluded results provided an essential advantage of producing Multilayers of (GNS) with high characteristics.