TITLE:
Thermal and Structural Analyses of PMMA/TiO2 Nanoparticles Composites
AUTHORS:
Nabawia A. El-Zaher, Mohamed S. Melegy, Osiris W. Guirguis
KEYWORDS:
Poly(methyl methacrylate), Nano-Titanium Dioxide Powder, PMMA/TiO2 Nanoparticle Composites, Differential Scanning Calorimetry (DSC), Thermogravimetric Analysis (TGA), X-Ray Diffraction (XRD)
JOURNAL NAME:
Natural Science,
Vol.6 No.11,
July
18,
2014
ABSTRACT: In the present work, composites of
poly (methyl methacrylate)/titanium oxide nanoparticles (100/0, 97.5/2.5, 95/5,
92.5/7.5, 90/10 and 0/100 wt/wt%)were prepared to be
used as bioequivalent materials according to their importance broad practical
and medical applications. Thermal properties as well as X-ray diffraction
analyses were employed to characterize the structure properties of such
composite. The obtained results showed variations in the glass transition
temperature (Tg), the melting temperature (Tm), shape and
area of thermal peaks which were attributed to the different degrees of
crystallinity and the existence of interactions between PMMA and TiO2 nanoparticle molecules. The XRD patterns showed sharpening of peaks at
different concentrations of nano-TiO2 powder with PMMA. This
indicated changes in the crystallinity/amorphosity ratio, and also suggested
that the miscibility between the amorphous components of homo- polymers PMMA
and nano-TiO2 powder is possible.The results showed that nano-TiO2 powder mix with PMMA can
improve the thermal stability of the homo-polymer under investigation, lead- ing
to interesting technological applications.