Influence of Bismuth Contents on Mechanical and Gamma Ray Attenuation Properties of Silicone Rubber Composite
- Department of Physics, Faculty of Science, Ain Shams University, Cairo, Egypt.
- Polymers and Pigments Department, National Research Centre, Dokki, Cairo, Egypt.
- Department of Physics, Faculty of Education, Ain Shams University, Cairo, Egypt.
- Department of Physics, Faculty of Science, Benha University, Benha, Egypt.
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Silicone rubber has been gained interest throughout the world due to its novel applications such in automotive industry, healthcare supplies and nuclear applications. Therefore, this work deals with the study of bismuth silicone rubber composite as a gamma ray shielding material. The Gamma ray attenuation coefficients of the composite were determined at gamma ray energies emitted from 232Th and 60Co radioactive sources. The detection technique is based on Hyper Pure Germanium detector (HPGe) under good geometry conditions. The total mass attenuation coefficients (µ/?) have been estimated based on the measured total linear attenuation coefficients (µ) as a function of bismuth silicone rubber composite concentrations. The results revealed that radiation shielding performance increases with increasing bismuth additive in silicone rubber. Theoretical mass attenuation coefficients were calculated using WinXCom program (version 3.1). A good correlation was observed between the experimental and theoretical mass attenuation coefficients. The dependence of the mechanical properties for silicone rubber filled with bismuth compound at different concentration have been studied and discussed.
[S. El-Fiki, S. U. El Kameesy, D. E. El. Nashar, M .A. Abou- Leila, M. K. El-Mansy , M. Ahmed (2015); Influence of Bismuth Contents on Mechanical and Gamma Ray Attenuation Properties of Silicone Rubber Composite Int. J. of Adv. Res. 3 (Jun). 1035-1039] (ISSN 2320-5407). www.journalijar.com
