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AuthorSunny, Anu Tresa
AuthorVijayan, Poornima
AuthorAdhikari, Rameshwar
AuthorMathew, Suresh
AuthorThomas, Sabu
Available date2021-09-07T06:16:16Z
Publication Date2016
Publication NamePhysical Chemistry Chemical Physics
ResourceScopus
ISSN14639076
URIhttp://dx.doi.org/10.1039/c6cp02361d
URIhttp://hdl.handle.net/10576/22789
AbstractCopper oxide nanoparticles (nCOPs) having octahedral morphology, synthesized through hydrazine reduction reaction were employed to formulate an epoxy based novel nanocomposite. The synthesis of copper oxide nanoparticles was carried out in polyethylene glycol medium to enhance their interfacial adhesion with the epoxy matrix. The extent of conservation of the crystalline nature and octahedral morphology of the nCOP in its epoxy nanocomposites was confirmed by X-ray diffraction and electron microscopy analysis. The mechanical properties including tensile, impact, fracture toughness and surface hardness of epoxy-nCOP nanocomposites were evaluated as a function of nCOP content. The maximum enhancement in strength, modulus, impact strength, fracture toughness and surface hardness of epoxy-nCOP nanocomposites was observed for 5 phr nCOP content. This may be due to the strong interaction between the nCOP and epoxy chains at this composition arising from its fairly uniform dispersion. A quantitative measurement of constrained epoxy chains immobilized by the nCOP octahedra was carried out using dynamic mechanical analysis. The enhancement in the storage modulus is related to the amount of the added nCOP as well as the volume of the constrained epoxy chains in the proximity of nCOP. The behaviour of epoxy-nCOP nanocomposites in this study has been explained by proposing a mechanism based on the distribution of nCOP domains in the epoxy matrix and the existing volume of constrained epoxy chains.
Languageen
PublisherRoyal Society of Chemistry
SubjectCopper oxide nanoparticles (nCOPs)
Nanoclays
Epoxides
Lay-Up
TitleCopper oxide nanoparticles in an epoxy network: Microstructure, chain confinement and mechanical behaviour
TypeArticle
Pagination19655-19667
Issue Number29
Volume Number18
dc.accessType Abstract Only


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