Surface modification of fibres with graphene oxide for interface improvement in composites

Lei Zeng, Xuqing Liu, Xiaogang Chen, Constantinos Soutis

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    Abstract

    A novel biomimetic surface modification method for fibres and the improvement on adhesion with epoxy resin was demonstrated. Inspired by the composition of adhesive proteins in mussels, the thin layer of poly(dopamine) (PDA) was self-polymerized onto the surface of carbon and aramid fibres. The graphene oxide (GO) was then grafted on the surface of PDA-coated fibres. The XPS results indicated successfully grafting of GO on the PDA-coated carbon and aramid fibres. The SEM observation showed the uniform coating of PDA and GO on the surface of fibres. The modification could increase the roughness of fibre surface. The single fibre tensile test and microbond test were carried out to evaluate the mechanical properties of the modified fibres. The interfacial shear strength of GO-PDA-fibres composites was significantly improved. Also, the bulk structure of fibres was protected by PDA and GO modification, and this increased the tensile strength of single fibre.
    Original languageEnglish
    Title of host publicationECCM18 - 18th European Conference on Composite Materials
    Publication statusPublished - 2019

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