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Morphology, tensile properties, and fracture toughness of epoxy/Al~2~O~3~ nanocomposites by Walid Naous; Xiao-Yan Yu; Qing-Xin Zhang; Kimiyoshi Naito; Yutaka Kagawa is a Materials Science article available to read on EtoBox.

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## Abstract Epoxy/Al~2~O~3~ nanocomposites were prepared using an epoxy resin, diglycidyl ether of bisphenol A, and cured with a polyoxypropylene diamine (Jeffamine D‐400). Transmission electron microscopy and wide angle X‐ray diffraction were employed to reveal the morphology of epoxy/Al~2~O~3~ nanocomposites. Dynamic mechanical analysis results showed that the storage modulus and the glass transition temperature (__T__~g~) of epoxy were improved. Tensile strength and Young's modulus also increased with increasing Al~2~O~3~ loading. Fracture toughness, as indicated by the stress intensity factor, __K__~Q~, was determined using single edge notch bending method, and 40% increase in __K__~Q~ was observed with only 2 vol % Al~2~O~3~. Scanning electron microscopy study of fracture surface showed a rather smooth and flat morphology for neat epoxy. However, massive plastic deformation was observed for epoxy/Al~2~O~3~ nanocomposites, leading to the significant increase in fracture toughness. The influence of spherical Al~2~O~3~ nanoparticles on thermophysical properties of epoxy was discussed and compared with that of sheet‐like nanoclays. © 2006 Wiley Periodicals, Inc. J Polym Sci Part B

Who reads Morphology, tensile properties, and fracture toughness of epoxy/Al~2~O~3~ nanocomposites?

Author

Walid Naous; Xiao-Yan Yu; Qing-Xin Zhang; Kimiyoshi Naito; Yutaka Kagawa

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0887-6266)

Published

2006

Language

EN

Field

Materials Science (Physical Sciences)