Table of Contents
International Journal of Metals
Volume 2013 (2013), Article ID 123657, 6 pages
http://dx.doi.org/10.1155/2013/123657
Research Article

Optical Characteristics of Polystyrene Based Solid Polymer Composites: Effect of Metallic Copper Powder

Department of Physics, Faculty of Science, University of Sulaimani, Kurdistan Regional Government, Sulaimani City, Iraq

Received 3 September 2013; Revised 28 October 2013; Accepted 28 October 2013

Academic Editor: Mohamed Bououdina

Copyright © 2013 Shujahadeen B. Aziz et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Solid polymer composites (SPCs) were prepared by solution cast technique. The optical properties of polystyrene doped with copper powder were performed by means of UV-Vis technique. The optical constants were calculated by using UV-Vis spectroscopy. The dispersion regions were observed in both absorption and refractive index spectra at lower wavelength. However, a plateau can be observed at high wavelengths. The small extinction coefficient compared to the refractive index reveals the transparency of the composite samples. The refractive index and optical band gap were determined from the reflectance and optical absorption coefficient data, respectively. The nature of electronic transition from valence band to conduction band was determined and the energy band gaps of the solid composite samples were estimated. It was observed that, upon the addition of Cu concentration, the refractive index increased while the energy gaps are decreased. The calculated refractive indexes (low index of refraction) of the samples reveal their availability in waveguide technology.