Author(s)

K. Prabha^*, H. S. Jayanna

Department of Physics, Kuvempu University, Shankaraghatta, Shimoga, India.

PVA_(1-x)PS_x (x = 0.0, 0.25, 0.50, 0.75 and 1.0) polymer blend films were prepared by simple solution cast method using mixer of dimethyl sulphoxide (DMSO) and double distilled water (DDW) as a common solvent. Gamma irradiation studies have been carried out to investigate the potential for improvements in the electrical properties of pure and blend polymer film. The induced changes in the dielectric constant (ε_r), dielectric loss (tanδ) and AC conductivity (σ_ac) properties for the unirradiated and irradiated films were studied, in the frequency range 50 Hz - 5 MHz at room temperature (27°C). Further, it was seen that the frequency dependent dielectric constant, dielectric loss and AC conductivity were found to increase with increasing γ irradiation dose for all the PVA_(1-x)PS_x (x = 0.0, 0.25, 0.50, 0.75 and 1.0) polymer blends. The maximum σ_ac at 1 kHz frequency was observed to be 2.4421 × 10^-6 s/m (at room temperature) for PVA film irradiated at 1.5 kGy.

Polymer Composite Films, Gamma Irradiation, Dielectric Properties

Prabha, K. and Jayanna, H. (2015) Study the Frequency Dependence of Dielectric Properties of Gamma Irradiated PVA_(1-x)PS_x Polymer Blends. Open Journal of Polymer Chemistry, 5, 47-54. doi: 10.4236/ojpchem.2015.54006.