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Graphene oxide was prepared by oxidizing the graphene via a simplified Hummers’ method, where it had involved the oxidization of the ultrasonically exfoliated water-dispersible graphene in a H2SO4/HNO3 mixture and the neutralization effect of NaOH, but without the presence of the KMnO4 oxidation agent. From the investigations that were conducted on the physiochemical and structural properties of the material under the Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR) and high resolution transmission electron microscopy (HRTEM) techniques, the graphene was found to have been oxidized and its geometrical topology damaged by the use of strong acids. Apart from the SEM images that were used in the morphology comparison of the oxidized and pristine graphene, the XRD results from this experiment had also demonstrated 2θ of the 12.02° as having an interlayer spacing of 0.77 nm. Keywords: Carbon materials, Nanocomposites, Functional, Colloidal processing, Composite materials

Carbon nanotubes (CNTs) was successfully deposited onto the surface of woven carbon fiber (CF) using the electrospray deposition method to produce a woven hybrid CF-CNT. The effect of voltage and spray times on the morphology of the woven hybrid CF-CNT have been studied. The voltage and spray time is crucial towards achieving a homogeneous CNT coating on the woven CF surface. The epoxy composite laminated with optimized woven hybrid CF-CNT and woven CF without the deposited CNTs were then prepared, and its tensile and thermal properties subsequently determined. The results showed that the woven hybrid CF-CNT epoxy composite laminates tensile strength increased by ~21%, its tensile modulus increased by ~37%, its interlaminar shear strength increased by ~25%, and its thermal conductivity increased by ~35% relative to that of the woven CF epoxy composite laminates.