Journal
POLYMER ENGINEERING AND SCIENCE
Volume 59, Issue 6, Pages 1199-1208Publisher
WILEY
DOI: 10.1002/pen.25100
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Funding
- Oklahoma Center for Advancement of Science and Technology [ONAP 09-20]
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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 similar to 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 similar to 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., 2019. (c) 2019 Society of Plastics Engineers
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