Development of Sustainable Radiation-Shielding Blend Using Natural Rubber/NBR, and Bismuth Filler

This research entailed the production of composite materials through combination natural rubber and acrylonitrile butadiene rubber, along with nano-silica-loaded bismuth (III) oxide, in varying concentrations ranging from 0 to 45 parts per hundred (phr). The gamma attenuation properties composites at different Bi2O3 were measured. Additionally, mechanical resulting composites, including hardness, tensile strength, elongation, tested. a concentration 20 phr exhibited highest strength elongation break, followed by subsequent decrease as increased. mass-attenuation coefficient increased phr, values 0.083 0.090 cm2/g 0.662 MeV. Moreover, fast neutron mass removal cross-sections ranged 0.092 0.072 cm2/g, corresponding variation 0–45 are also determined. Various parameters related gamma-ray shielding, half-value layer, exposure build-up factor (EBF) up 40 mean free path (mfp) penetration depth, effective atomic number (Zeff) included. radiation-induced aging prepared blend is tested measuring effect radiation on its shielding capability via porosity change. obtained results indicated that could be used for several radiation-protection applications.