Study the Frequency Dependence of Dielectric Properties of Gamma Irradiated PVA<sub>(1-x)</sub>PS<sub>x</sub>Polymer Blends

作     者：K. Prabha H. S. Jayanna 

作者机构：Department of Physics Kuvempu University Shankaraghatta Shimoga India 

出 版 物：《Open Journal of Polymer Chemistry》 (高分子化学期刊（英文）)

年 卷 期：2015年第5卷第4期

页      面：47-54页

学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学] 

主　　题：Polymer Composite Films Gamma Irradiation Dielectric Properties 

摘      要：PVA(1-x)PSx (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 (εr), dielectric loss (tanδ) and AC conductivity (σac) 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)PSx (x = 0.0, 0.25, 0.50, 0.75 and 1.0) polymer blends. The maximum σac 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.