Abstract
The main aim of this work is to investigate the dielectric and electrical properties of synthesized acrylic acid–gelatin blends of different acrylic acid weight concentrations with gelatin. An electron beam (EB) with different doses of 50–150 kGy irradiated the synthesized blend while it was also subjected to an applied electric field in the range of 70 Hz–5 MHz to determine the variation in the dielectric parameters and electrical conductivity. The lowest kHz gives the highest dielectric parameters and lowest AC electrical conductivity (σac) values for both the blank and EB-irradiated blends. The lowest dielectric parameters and σac values were at 0.4 g acrylic acid concentration, and the highest values were for the 0.2 g acrylic acid concentration. Comparing the different EB doses for each acrylic acid concentration, it was found that the order of the lowest dielectric constant, έ, was 0.579 for (0.2 g + 100 kGy) > 0.475 for (0.6 g + 50 kGy) > 0.412 for (1 g + 50 kGy) > 0.315 for (0.4 g + 100 kGy) at 0.5 kHz. However, the order of the highest σac was 1.71 × 10−4 S/m for (0.2 g + 150 kGy) > 1.39 × 10−4 S/m for (0.6 g + 75 kGy) > 1.08 × 10−4 S/m for (1 g + 75 kGy) > 8.56 × 10−5 S/m for (0.4 g + 150 kGy) at 5 MHz. A modified equation was deduced for the AC conductivity as a function of the frequency of the applied field and the concentration of acrylic acid mixed with gelatin at room temperature.
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