Development Flexible low-energy gamma ray shielding material composing of natural rubber- synthetic SBR and bismuth

Abstract

Abstract

This research developed a flexible low energy gamma ray shielding material by blending PVNRL and SBR in the presence of radiation shielding materials, bismuth powder and bismuth solution. The results indicate that PVNRL/SBR blend, with the blend ratio of 50/50 in the presence of bismuth can shied low energy gamma rays. The obtained shielding material with 100 phr of bismuth powder gave 27.7 % attenuation of gamma radiation emitted by nuclide ¹³⁷Cs (662 kev) and 48.9 % attenuation of gamma ray generated by nuclide ¹³¹I (364 kev). The presence of 20 phr bismuth solution 26.6 % attenuation of gamma radiation emitted by nuclide ¹³⁷Cs (662 kev) and 39.4 % attenuation of gamma ray generated by nuclide ¹³¹I (364 kev).