Mahmoud K A, Lacomme E, Sayyed M I, Özpolat Ö F, Tashlykov O L
Ural Federal University, 19 Mira st., 620002, Yekaterinburg, Russia.
Nuclear Materials Authority, Maadi, Cairo, Egypt.
Heliyon. 2020 Mar 12;6(3):e03560. doi: 10.1016/j.heliyon.2020.e03560. eCollection 2020 Mar.
Polyvinyl chloride (PVC) is the most widely produced synthetic plastic polymer in the world: it has a variety of applications due to its low cost, elasticity, light weight, good mechanical characteristics and corrosion resistance. In order to protect living beings from harmful radiation such as gamma rays, novel low-cost chalcocite and hematite-based PVCs were fabricated for shielding purposes. The mass attenuation coefficient μ for various fabricated hematite and chalcocite-based PVCs was calculated using MCNP-5 code. The results were compared with the values calculated theoretically using XCOM software between 0.015 and 15 MeV. Moreover, the simulated μ parameter for chalcocite/PVC and hematite/PVC was used to calculate other shielding factors, such as the half value layer (HVL), the mean free path (MFP) effective atomic number Z, the geometric-progress (G-P) fitting parameters and the exposure buildup factor (EBF). The simulated data of μ for all composites is comparable to that obtained from a theoretical calculation. The results showed that the addition of hematite and chalcocite enhance the μ of PVC polymers. We also found that the μ of chalcocite/PVC is higher than that of hematite/PVC due to the copper content in the former.
聚氯乙烯（PVC）是世界上产量最高的合成塑料聚合物：由于其成本低、弹性好、重量轻、机械性能优良以及耐腐蚀，它有着各种各样的应用。为了保护生物免受伽马射线等有害辐射，人们制备了新型低成本的基于辉铜矿和赤铁矿的聚氯乙烯用于屏蔽目的。使用MCNP - 5代码计算了各种制备的基于赤铁矿和辉铜矿的聚氯乙烯的质量衰减系数μ。将结果与使用XCOM软件在0.015至15兆电子伏之间理论计算得到的值进行了比较。此外，使用辉铜矿/聚氯乙烯和赤铁矿/聚氯乙烯的模拟μ参数来计算其他屏蔽因子，如半值层（HVL）、平均自由程（MFP）、有效原子序数Z、几何级数（G - P）拟合参数和曝射累积因子（EBF）。所有复合材料的μ模拟数据与理论计算得到的数据相当。结果表明，添加赤铁矿和辉铜矿提高了聚氯乙烯聚合物的μ。我们还发现，由于辉铜矿/聚氯乙烯中含铜，其μ高于赤铁矿/聚氯乙烯的μ。
