Structural and Dielectrically Properties of (CMC -PAA-ZrC) Nano Composites for Gamma Shielding Application
Zainab Sabry Jaber, Majeed Ali Habeeb
University of Babylon, College of Education for Pure Sciences, Department of Physics, Iraq.
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The films are made using the casting process and various percentages of Nano Zirconium carbide (0, 1.5, 3, 4.5, and 6) wt%. have been studied The dielectric properties of Nano composites showed that the dielectric constant, dielectric loss and A.C electrical conductivity of (CMC-PAA) blend increase with the increase in ZrC nanoparticles concentrations. Also, the dielectric constant and dielectric loss of (CMC-PAA-ZrC) Nano composites decrease while the A.C electrical conductivity increases with the increase in frequency. Scanning electron microscopy shows the surfaces of the films (CMC-PAA-ZrC) several randomly distributed aggregates or fragments on the top surface, consistent and coherent, as demonstrated by electron microscopic scanning. Results of applications showed the nan composites high linear attenuation coefficients have gamma ray sources Co-60 and Cs-137.It is also used to protect against radiation. As the concentration of ZrC increases, the transmission radiation decreases. With the concentration, the attenuation coefficients increase.