Title: Synthesis and optical properties of titania-PVA nanocomposites

Authors: M.M. Rashad; A.E. Shalan

Addresses: Central Metallurgical Research and Development Institute (CMRDI), Electronic and Magnetic Materials Division, Advanced Materials Department, P.O. Box 87 Helwan, Cairo, Egypt. ' Central Metallurgical Research and Development Institute (CMRDI), Electronic and Magnetic Materials Division, Advanced Materials Department, P.O. Box 87 Helwan, Cairo, Egypt

Abstract: Titania TiO₂-poly vinyl alcohol (PVA) nanocomposites have been synthesised from hydrothermal synthesised TiO₂ and PVA using a solution – blend film casting method. The produced composites were characterised using X-ray diffraction (XRD), scanning electron microscope (SEM), UV-visible-near IR spectrophotometer and photoluminescence (PL). The results revealed that anatase TiO₂ nanoparticles was formed from precursors precipitated at pH 7 hydrothermally treated at 100°C for 24 h and then annealed at temperature 300°C for 2 h. The crystalline size of the produced anatase powders was 15 nm. The produced titania was dispersed in the different molar ratios of the PVA polymer to form the composites. The microstructure of the produced powders appeared as uniform spherical like structure. The UV-visible and PL absorbance spectrums showed the sharp absorption bands were formed at 300 and 360 nm respectively.

Keywords: TiO2; polymer; nanocomposites; applications; optical properties; titania; PVA; nanotechnology; polyvinyl alcohol; nanoparticles; microstructure.

DOI: 10.1504/IJNP.2012.046249

International Journal of Nanoparticles, 2012 Vol.5 No.2, pp.159 - 169

Received: 16 Jun 2011
Accepted: 03 Sep 2011
Published online: 20 Aug 2014 *

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