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Basu, Soumen
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article
Enhancing the mechanical performance of <scp>E</scp>‐glass fiber epoxy composites using coal‐derived graphene oxide
Abstract
<jats:title>Abstract</jats:title><jats:sec><jats:label /><jats:p>In this study, we compare the effect of various precursor‐based graphene oxide (GO) nanofillers on enhancing the mechanical performance of E‐glass fiber‐reinforced epoxy resin composites (EGFPs). GO derived from bituminous coal (BC‐GO) and graphite (Gr‐GO) were dispersed into an epoxy resin matrix. The resulting mixture was combined with E‐glass fiber mats using vacuum‐assisted resin infusion molding. Notable improvements (38.9% in flexural strength, 22.9% in tensile strength, and 21.6% in impact strength) were observed in BC‐GO‐reinforced EGFPs at 0.25 phr loading of BC‐GO. The improvements for Gr‐GO‐reinforced EGFPs were 28%, 9.3%, and 6.8%, respectively. XRD analysis of BC‐GO showed a diffraction peak at 2<jats:italic>θ</jats:italic> = 20.9°. Except for this peak, no other crystalline peaks were observed when BC‐GO was incorporated into EGFPs. FTIR spectra of both composite samples, with or without the nanofiller, were similar due to the spectral peaks overlap. TEM demonstrated the exfoliated morphology of BC‐GO in EGFPs. These findings underscore the potential of BC‐GO as a cost‐effective reinforcement for polymer nanocomposites across various industrial applications, including the development of lightweight and strong materials for aerospace and automotive industries, protective coatings, petroleum, and aerospace production systems.</jats:p></jats:sec><jats:sec><jats:title>Highlights</jats:title><jats:p><jats:list list-type="bullet"> <jats:list-item><jats:p>BC‐GO demonstrates superior mechanical performance compared to Gr‐GO in EGFPs.</jats:p></jats:list-item> <jats:list-item><jats:p>0.25 phr BC‐GO improves 38.9% flexural, 22.9% tensile, and 21.6% impact strengths.</jats:p></jats:list-item> <jats:list-item><jats:p>Beyond 0.25 phr, BC‐GO and Gr‐GO showed a decline in mechanical enhancement.</jats:p></jats:list-item> <jats:list-item><jats:p>Role of particle size, loading & adhesion to matrix analyzed using XRD, FTIR, and DLS.</jats:p></jats:list-item> <jats:list-item><jats:p>Coal‐GO is an attractive alternative nanofiller for EGFPs.</jats:p></jats:list-item> </jats:list></jats:p></jats:sec>