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Triblock copolymer grafted Graphene oxide as nanofiller for toughening of epoxy resin

Publication Type : Journal Article

Publisher : Materials Chemistry and Physics, Volume 248, p.122930 (2020)

Source : Materials Chemistry and Physics, Volume 248, p.122930 (2020)

Url : https://www.sciencedirect.com/science/article/pii/S0254058420303072

Keywords : Block copolymer, Fracture toughness, graphene oxide, Tensile strength, Toughening

Campus : Amritapuri

School : School of Arts and Sciences

Department : Chemistry

Year : 2020

Abstract : Inspired by the mechanical strength produced by Graphene oxide (GO) and Polyethylene Glycol-b-Polypropylene Glycol-b-Polyethylene Glycol (TBCP) block copolymer separately in epoxy composites, we have incorporated both these materials in the form of a graft (GO-g-TBCP) in epoxy. This idea of exploiting the synergistic effect of nanofiller and block copolymer in the form of a graft in the epoxy matrix is a maiden attempt. The grafting process was confirmed through FTIR, FTNMR, XPS, XRD and Raman spectroscopy. Both GO-g-TBCP and GO were incorporated into epoxy and the mechanical properties of the composites were analysed. The fracture toughness showed a tremendous improvement of about 400% without affecting the inherent tensile properties. GO-g-TBCP toughened epoxy displayed about 100% improvement in storage modulus and 33% improvement in tensile strength. These enhanced properties were explained by probing into the sequential arrangement of the nanostructures into a fractal-like structure with the help of HRTEM and SEM micrographs.

Cite this Research Publication : Jitha S Jayan, Dr. Saritha A., Deeraj, B. D. S., and Kuruvilla Joseph, “Triblock copolymer grafted Graphene oxide as nanofiller for toughening of epoxy resin”, Materials Chemistry and Physics, vol. 248, p. 122930, 2020.

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