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Effect of graphene oxide on the interlaminar fracture toughness of carbon fiber/epoxy composites
Author(s) -
Mishra Kunal,
Bastola Krishna P.,
Singh Raman P.,
Vaidyanathan Ranji
Publication year - 2019
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.25100
Subject(s) - materials science , composite material , graphene , fracture toughness , epoxy , scanning electron microscope , flexural strength , raman spectroscopy , delamination (geology) , composite number , oxide , paleontology , physics , subduction , biology , optics , tectonics , nanotechnology , metallurgy
Graphene oxide (GO) nanoparticles were introduced in the interlaminar region of carbon fiber–epoxy composites by dispersing it in a thermoplastic polymer carrier such as polyvinylpyrrolidone (PVP). Mode‐I fracture toughness ( G IC ) was investigated using double cantilever beam testing to evaluate the effect of the GO on the delamination behavior of the composite. The GO content was varied from 0% to 7% by weight as a function of the PVP content. Improvement of ∼100% in the Mode I fracture toughness ( G IC ) was observed compared to composites with no GO. The optimum amount of nanoparticles for improving the interlaminar fracture toughness was found to be ∼0.007% by weight of the composite. The increase in the value of flexural strength value was also observed. Scanning electron microscopy of fracture surfaces, X‐ray diffraction, and transmission electron microscopy, and reflectance Fourier transform infrared spectra, as well as Raman spectroscopy results, are presented to support the conclusions. POLYM. ENG. SCI., 59:1199–1208 2019. © 2019 Society of Plastics Engineers