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Mode I and Mode II interlaminar fracture behavior of E‐glass fiber reinforced epoxy composites modified with reduced exfoliated graphite oxide
Author(s) -
Bhanuprakash Lokasani,
Ali Abins,
Mokkoth Rashad,
Varghese Soney
Publication year - 2018
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.24809
Subject(s) - materials science , composite material , epoxy , fracture toughness , flexural strength , graphite , exfoliation joint , glass fiber , scanning electron microscope , graphene , nanotechnology
In this article, Mode I and Mode II interlaminar fracture toughness, interlaminar shear strength, flexural strength and the flexural modulus of continuous unidirectional E‐glass fiber reinforced epoxy composites modified with three different graphite oxide (GO) fillers were investigated. GO was prepared through modified Hummers' method followed by thermal exfoliation at 200°C to produce exfoliated GO (EGO). Further, EGO was chemically reduced to result in reduced EGO (rEGO). Incorporation of GO and EGO fillers exhibited significant improvement in the mechanical properties of the composites. Remarkable enhancement in mechanical properties was observed with rEGO fillers, where Mode I and Mode II fracture toughness values of composites were increased by 65% (0.5 wt%) and 54% (0.25 wt%), respectively. Studies on nanofillers distribution in the matrix resin and the examination of fracture surfaces of specimens were carried out with field emission scanning electron microscopy. POLYM. COMPOS., 39:E2506–E2518, 2018. © 2018 Society of Plastics Engineers