doiSerbia

PMMA-Y2O3 (Eu3+) nanocomposites: Optical and mechanical properties

Musbah Salah S. (Faculty of Technology and Metallurgy, Belgrade)
Radojević Vesna J. (Faculty of Technology and Metallurgy, Belgrade)
Borna Nadežda V. (Faculty of Technology and Metallurgy, Belgrade)
Stojanović Dušica B. (Faculty of Technology and Metallurgy, Belgrade)
Dramićanin Miroslav D. (Institute of Nuclear Sciences "Vinča", Belgrade)
Marinković Aleksandar D. (Faculty of Technology and Metallurgy, Belgrade)
Aleksić Radoslav R. (Faculty of Technology and Metallurgy, Belgrade)

The results of a study related to the processing and characterization of PMMA-Y2O3 (Eu3+) nanocomposites are presented herein. The nanocomposite samples were prepared using a laboratory mixing molder with different contents of Eu-ion doped Y2O3 nanophosphor powder. The influence of particle content on the optical and dynamic mechanical properties of the nanocomposites was investigated. The intensity of the luminescence emission spectra increased as the nanophosphor content in the composite increased. The results of dynamic mechanical analysis revealed that the storage modulus, loss modulus and glass transition temperature (Tg) of the polymer composites increased with increasing content of the nanophosphor powder. The microhardness data also confirmed that the hardness number increased with nanoparticles concentration in the PMMA nanocomposites. The obtained results revealed a relatively linear relationship between Tg and the Vickers hardness.

Keywords: nanocomposites, luminescence, mechanical properties, dynamic mechanical analysis, microhardness