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Article

Experimental Characterization and Modeling Multifunctional Properties of Epoxy/Graphene Oxide Nanocomposites

Department of Aerospace Engineering, Khalifa University of Science and Technology, Abu Dhabi 127788, United Arab Emirates
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Author to whom correspondence should be addressed.
Academic Editors: Haroon Mahmood and Marzena Pawlik
Polymers 2021, 13(16), 2831; https://doi.org/10.3390/polym13162831
Received: 22 July 2021 / Revised: 10 August 2021 / Accepted: 11 August 2021 / Published: 23 August 2021
(This article belongs to the Special Issue Advances in Graphene-Epoxy Nanocomposites)
Thermomechanical modeling of epoxy/graphene oxide under quasi-static and dynamic loading requires thermo-mechanical properties such as Young’s modulus, Poisson’s ratio, thermal conductivity, and frequency-temperature dependent viscoelastic properties. In this study, the effects of different graphene oxide (GO) concentrations (0.05, 0.1, and 0.2 wt%) within an epoxy matrix on several mechanical and thermal properties were investigated. The distribution of GO fillers in the epoxy was investigated using transmission electron microscopy (TEM). The digital image correlation (DIC) technique was employed during the tensile testing to determine Young’s modulus and Poisson’s ratio. Analytical models were used to predict Young’s modulus and thermal conductivity, with an error of less than 13% and 9%, respectively. Frequency–temperature dependent phenomenological models were proposed to predict the storage moduli and loss tangent, with a reasonable agreement with experimental data. A relatively high storage modulus, heat-resistance index (THRI), and thermal conductivity were observed in 0.2 wt% nanocomposite samples compared with pure epoxy and other lower concentration GO nanocomposites. A high THRI and derivative of thermogravimetric analysis peak temperatures (Tm1 and Tm2) were exhibited by adding nano-fillers in the epoxy, which confirms higher thermal stability of nanocomposites than that of pristine epoxy. View Full-Text
Keywords: graphene oxide; transmission electron microscopy; mechanical properties; thermal properties; theoretical modeling graphene oxide; transmission electron microscopy; mechanical properties; thermal properties; theoretical modeling
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MDPI and ACS Style

Naresh, K.; Khan, K.A.; Umer, R. Experimental Characterization and Modeling Multifunctional Properties of Epoxy/Graphene Oxide Nanocomposites. Polymers 2021, 13, 2831. https://doi.org/10.3390/polym13162831

AMA Style

Naresh K, Khan KA, Umer R. Experimental Characterization and Modeling Multifunctional Properties of Epoxy/Graphene Oxide Nanocomposites. Polymers. 2021; 13(16):2831. https://doi.org/10.3390/polym13162831

Chicago/Turabian Style

Naresh, Kakur, Kamran A. Khan, and Rehan Umer. 2021. "Experimental Characterization and Modeling Multifunctional Properties of Epoxy/Graphene Oxide Nanocomposites" Polymers 13, no. 16: 2831. https://doi.org/10.3390/polym13162831

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