Evaluation of Polymethyl Methacrylate Sheets as a Radiation Shielding Material
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RESEARCH ARTICLE
Evaluation of Polymethyl Methacrylate Sheets as a Radiation Shielding Material H. A. Saudi1 · Ei‑Said H. Ei‑Mosallamy2 Received: 24 July 2019 / Accepted: 13 August 2020 © Indian Institute of Packaging 2020
Abstract Polymethyl methacrylate (PMMA) samples were previously prepared by catalytic chain transfer polymerization via metal carbazone of Zn, Cd, and Hg. The density change of PMMA with different metal carbazone complex reveals that Cd cation is denser than the others. The thermal stability of specimens, their hardness as well as their shielding properties has been investigated to ensure that the validity of these materials for application to the problem of the permanent disposal of nuclear wastes. The results indicated that PMMA samples which prepared through the present mechanism have good thermal stability and hardness, especially in case of Cd metal. The shielding parameters such as mass attenuation coefficients (μ/ρ) and half value layer (HVL) values have been measured using NaI(Tl) detector and the variation of shielding parameters are discussed taking into consideration the effect of photon energy and different metal carbazone complex addition on these parameters. The addition of those elements causes an increase in mass attenuation coefficient, while HVL values were decreased. The obtained results give further support to the investigated material to be used as a promising and proper shielding material. Keywords Polymethyl methacrylate · Shielding parameters · Thermal stability
Introduction The shields are used to protect radiologists and patients from the harmful effects of exposure to ionizing radiation, such as x-rays, gamma rays, and neutron, which are used in the field of medicine in many cases nowadays for treatment. These shields are effective protection material of radiation, which requires the design and implementation of new materials. The concrete was used and the development of certain types of glass is used for this purpose. In the present work, the polymer samples were prepared as an alternative to concrete and ordinary glass because of its light weight and hardness. Moreover, the polymer retains its durability and color for a longer life [1, 2]. The polymer material that was taken into consideration in this regard is polymethyl-methacrylate (PMMA) [3]. Although it is not a familiar type of glass of silica, the material, like many thermoplastics, is technically * H. A. Saudi [email protected]; [email protected] 1
Department of Physics, Faculty of Science, Al-Azhar University (Girls’ Branch), Cairo, Egypt
Department of Chemistry, Faculty of Science, Ain Shams University, Cairo, Egypt
2
classified as a type of glass (it is a non-crystalline glass material) and is sometimes classified as acrylic glass. These materials are often used as thermoplastic glass because of their high transparency, good environmental stability and good workability [4]. Polymer components can be considered the most cost-effective solution compared to concrete. The polymer in the
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