This study demonstrates that incorporating graphene oxide and carbon fiber into the epoxy matrix enhances the material's physical and mechanical properties for structural applications. Using a cost-effective hand lay-up method, nanocomposite samples were prepared with graphene oxide at 1, 2, and 3 wt%. The uniform distribution of nanoparticles indicates the formation of peaks and the presence of elemental groups, as demonstrated by X-ray diffraction and Fourier transform infrared analyses. Graphene oxide loading increases tensile strength and modulus by 33.02% and 19.427%, respectively, compared with the pristine sample. Similarly, the flexural strength and modulus improved by 34.481% and 28.241%, respectively, compared with unloaded polymer samples. Scanning electron microscopy was employed to investigate the failure mechanisms of the fractured surfaces of the nanocomposite specimens. Further, the viscoelastic, fire-retardant, and water-absorbent performance of the developed composite was evaluated. Loading graphene oxide significantly enhances the sample's physio-mechanical performance required for structural applications.
Kumar et al. (Wed,) studied this question.