Fabrication and characterisation of graphene oxide-epoxy nanocomposite

Galpaya, Dilini, Wang, Mingchao, Yan, Cheng, Liu, Meinan, Motta, Nunzio, & Waclawik, Eric R. (2013) Fabrication and characterisation of graphene oxide-epoxy nanocomposite. In Fourth International Conference on Smart Materials and Nanotechnology in Engineering [Proceedings of SPIE, 8793], SPIE - Society of Photo-Optical Instrumentation Engineers , Gold Coast, Qld, pp. 1-7.

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Abstract

Adequate amount of graphene oxide (GO) was firstly prepared by oxidation of graphite and GO/epoxy nanocomposites were subsequently prepared by typical solution mixing technique. X-ray diffraction (XRD) pattern, X-ray photoelectron (XPS), Raman and Fourier transform infrared (FTIR) spectroscopy indicated the successful preparation of GO. Scanning electron microscopy (SEM) and Transmission electron microscopy (TEM) images of the graphite oxide showed that they consist of a large amount of graphene oxide platelets with a curled morphology containing of a thin wrinkled sheet like structure. AFM image of the exfoliated GO signified that the average thickness of GO sheets is ~1.0 nm which is very similar to GO monolayer. Mechanical properties of as prepared GO/epoxy nanocomposites were investigated. Significant improvements in both Young’s modulus and tensile strength were observed for the nanocomposites at very low level of GO loading. The Young’s modulus of the nanocomposites containing 0.5 wt% GO was 1.72 GPa, which was 35 % higher than that of the pure epoxy resin (1.28 GPa). The effective reinforcement of the GO based epoxy nanocomposites can be attributed to the good dispersion and the strong interfacial interactions between the GO sheets and the epoxy resin matrices.

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ID Code: 61388
Item Type: Conference Paper
Refereed: No
Keywords: Graphene oxide, Epoxy nanocomposites, Mechanical properties
DOI: 10.1117/12.2026759
ISBN: 9780819496300
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MATERIALS ENGINEERING (091200) > Composite and Hybrid Materials (091202)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MECHANICAL ENGINEERING (091300) > Numerical Modelling and Mechanical Characterisation (091307)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2013 please consult the authors
Deposited On: 17 Jul 2013 00:47
Last Modified: 30 Aug 2013 17:33

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