Some Of The Optical, Thermal, Mechanical And Electrical Properties Of (PVA-Mgcl2.6H2O-Crcl3.6H2O) Films

Abstract

The casting method was used to create pure and reinforced Polyvinyl Alcohol (PVA) polymer films with various weight ratios ((3,7,11,15) wt%)).Pure (PVA) films reinforced with chromium chloride salt (CrCl3.6H2O) and magnesium chloride salt (MgCl2.6H2O) salt were examined for optical, thermal, mechanical, and electrical (insulating) properties.
The effect of the weight ratio of (CrCl3.6H2O, MgCl2.6H2O) salts on the optical energy gap of pure (PVA) film was explored by recording transmittance and absorbance spectra in the range of (190-1100 nm).It was discovered that as the weight ratio of (CrCl3.6H2O, MgCl2.6H2O) salts grows, the optical energy gap reduces, indicating that the electronic transitions are indirect.The mechanical properties of pure (PVA) film were investigated in relation to the weight ratio of (CrCl3.6H2O, MgCl2.6H2O) salts. The hardness value of the pure (PVA) film increases as the weight ratio of the two additional salts increases, according to the hardness test.Furthermore, when investigating the influence of salt reinforcement on the thermal characteristics of pure (PVA) film, it was discovered that when the weight ratio of the two additional salts increases, the thermal conductivity coefficient of the pure (PVA) film increases and then decreases erratically.The dielectric constant test showed that as the weight ratio of (CrCl3.6H2O, MgCl2.6H2O) salts increases, the value of the dielectric constant of pure (PVA) film at the same frequency increases.