Dielectric and optical properties for ( Poly vinyl alcohol-Carboxymethyl Cellulose – Copper Oxide ) Nanocomposites and their Applications

January March 2017 732 JCPS Volume 10 Issue 1 Dielectric and optical properties for (Poly vinyl alcohol-Carboxymethyl Cellulose –Copper Oxide) Nanocomposites and their Applications Raheem G. Kadhim, Majeed A. Habeeb and Qayssar M. Jebur Babylon University, College of Science, Department of Physics, Iraq Babylon University, College of Education of Pure Science, Department of Physics, Iraq *Corresponding author: E-Mail: Sezer.aljubouri1984@gmail.com ABSTRACT Nanocomposites are new materials important for several applications as humidity sensors, antibacterial etc. So, to fabricate a humidity sensor as application will make perpetration anew kind of (Poly vinyl alcohol Carboxymethyl Cellulose –Copper Oxide) nanocomposites with different concentrations to test it’s for this purpose. From the results we note that the dielectric constant, dielectric loss and AC. Electrical conductivity of (PVA-CMC) blend increase with the increasing of the copper oxide nanoparticles concentrations at 100HZ. Whereas dielectric constant and dielectric loss decrease with increased frequency but AC. Electrical conductivity increases with increased frequency. The optical measurements are showed the absorbance of (PVA-CMC-Copper Oxide) nanocomposites is increased with increase of the concentrations of copper oxide nanoparticles. The indirect energy gap (Eg) of (PVA-CMC) blend decreases with the increase of the concentrations of copper oxide nanoparticles. All the optical constants as absorption coefficient, extinction coefficient, and refractive index, real and imaginary dielectric constants of nanocomposites are variation with the increase of the weight percentages of copper oxide nanoparticles. Surface resistance of (PVA-CMC-Copper Oxide) nanocomposites variation with increase relative humidity.