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Studying of some dielectric and mechanical properties of (PVA: PVP) polymer blend

Author: 
Ali A. Sallal, Sabah A. Salman and Ammar A. Habeeb
Subject Area: 
Physical Sciences and Engineering
Abstract: 

In this study pure (PVA) polymer film and films of (PVA:PVP) polymer blends at weight ratios (((100:0), (70:30), (50:50), (30:70)) wt%) preparation using the casting method. The dielectric and mechanical properties of (PVA:PVP) polymer blends films have been studied. The effect of the weight ratio of the (PVA:PVP) polymer blend film on the dielectric properties have been studied, the practical results show a decrease in both the dielectric constant and the dissipation factor with increased the frequency for all polymer blends films, as well as increase the dielectric constant and the dissipation factor with increasing the weight ratio of the (PVP) polymer at the same frequency. However, the results show increased the (A.C) electrical conductivity with increased the frequency for all Polymer blends films, also the (A.C) electrical conductivity increase with increasing the weight ratio of the (PVP) polymer at the same frequency. The effect of the weight ratio of the (PVA:PVP) polymer blend film on the mechanical properties have been studied, the practical results have indicated an irregular and regular reduction of tensile properties (tensile strength, elongation at break and Youn'g modulus) of (PVA:PVP) polymer blends films by increasing the weight ratio of the (PVP) polymer. Thus the results of the hardness test showed an increase in the hardness value of (PVA:PVP) polymer blends films by increasing the weight ratio of the (PVP) polymer. While the results of the impact test showed a decrease in the fracture energy value of the polymer (PVA:PVP) blends films by increasing the weight ratio of the (PVP) polymer.

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