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Home > Archives > Volume 20, No 5 (2022) > Article

DOI: 10.14704/nq.2022.20.5.NQ22567

Preparation and Study of Some Optical, Thermal and Electrical Properties of polymeric blend Films [PVA:PVP]Reinforcedby CaCl2.2H2O Salt

Rafid M. A. Rustam, Sabah A. Salman

Abstract

In this study, films of pure [PVA:PVP] polymeric blends andreinforced withCaCl2.2H2O salt were prepared with different weight ratios (10,20,30,40,50 wt. %) by using the solution casting method. However, the optical, thermal, and electrical (insulating) properties of all polymeric blends films were studied. The transmittance and absorbance spectra were recorded within the wavelength range (190-1100 nm). The impact of salt weight ratio on the energy gap of reinforced polymeric blends films was investigated, and it was discovered that as the weight ratio is increased, the energy gap decreases. Thus, the results showed that indirect electronic transition are allowed. Generally, the practical results of studying the effectiveness of the weight ratio of salt on the thermal properties ofreinforced polymeric blends films revealed that as the weight ratio of salt is increased, the thermal conductivity coefficient of reinforced polymeric blends films increases, while the thermal conductivity coefficient of all polymeric blends films remains small. Therefore, these polymeric blends can be used at all weight ratios as heat-insulating shields.It was also discovered that as the weight ratio of salt increases, the glass transition temperature and crystal line melting temperature of reinforced polymeric blends films change. The impact of salt weight ratio on the electrical (dielectric) properties of reinforced polymeric mix films was investigated. The dielectric constant of all polymeric blended films decreased with increasing frequency, according to the experimental data. It also demonstrated that as the frequency of all polymeric blends films increased, so did the AC electrical conductivity

Keywords

Polymer blend [PVA-PVP], Calcium chloride dehydrate (CaCl2.2H2O) salt, differential thermal calorimeter, electrical isolation.

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