Fullerene–epoxy nanocomposites-enhanced mechanical properties at low nanofiller loading
In this study, we characterized the mechanical properties of fullerence (C60) epoxy nanocomposites at various weight fractions of fullerene additives in the epoxy matrix. The mechanical properties measured were the Young’s modulus, ultimate tensile strength, fracture toughness, fracture energy, and the material’s resistance to fatigue crack propagation. All of the above properties of the epoxy polymer were significantly enhanced by the fullerene additives at relatively low nanofiller loading fractions (~0.1 to 1% of the epoxy matrix weight). By contrast, other forms of nanoparticle fillers such as silica, alumina, and titania nanoparticles require up to an order of magnitude higher weight fraction to achieve comparable enhancement in properties.
KeywordsEpoxy nanocomposites Fullerenes Young’s modulus Tensile strength Fracture toughness Fracture energy and fatigue resistance
N.K. acknowledges funding support from the US Office of Naval Research (Award Number: N000140910928) and the US National Science Foundation (Award Number: 0900188).
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