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http://dx.doi.org/10.17702/jai.2022.23.3.94

Ternary Phased Graphene/Silica/EVOH Nanocomposites Coating Films  

Kim, Seong Woo (Department of Chemical Engineering Kyonggi University)
Publication Information
Journal of Adhesion and Interface / v.23, no.3, 2022 , pp. 94-99 More about this Journal
Abstract
Ternary phased graphene/silica/EVOH nanocomposite coating materials were prepared via sol-gel process and solution blending process. From both SEM observations and XRD analysis, the exfoliated structure and dispersion state of graphene nanosheets and silica particles in the nanocomposites as well as the intercalated and exfoliated structure of the prepared graphene oxide were confirmed. The incorporation of GrO and silica at appropriate content resulted in remarkable improvement in oxygen barrier property of the ternary phased nanocompoiste-coated BOPP films, compared with that of binary(silica/EVOH) phased nanocomposite coating films, however, at excess amount of GrO and silica, very slight variation was observed due to incomplete exfoliation, dispersion of graphene tactoids, and formation of micro cracks in the silica clusters. In addition, the transparency of nanocomposite-coated film was investigated by measuring the light transmittance as a function of GrO contents, suggesting the possibility for the application of food packaging films.
Keywords
Graphene; Silica; Nanocomposites; Barrier property; Transparency;
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