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http://dx.doi.org/10.1016/j.net.2020.04.026

Gamma radiation shielding properties of poly (methyl methacrylate) / Bi2O3 composites  

Cao, Da (Department of Nuclear Engineering, North Carolina State University)
Yang, Ge (Department of Nuclear Engineering, North Carolina State University)
Bourham, Mohamed (Department of Nuclear Engineering, North Carolina State University)
Moneghan, Dan (Department of Nuclear Engineering, North Carolina State University)
Publication Information
Nuclear Engineering and Technology / v.52, no.11, 2020 , pp. 2613-2619 More about this Journal
Abstract
This work investigated the gamma-ray shielding performance, and the physical and mechanical properties of poly (methyl methacrylate) (PMMA) composites embedded with 0-44.0 wt% bismuth trioxide (Bi2O3) fabricated by the fast ultraviolet (UV) curing method. The results showed that the addition of Bi2O3 had significantly improved the gamma shielding ability of PMMA composites. Mass attenuation coefficient and half-value layer were examined using five gamma sources (Cs-137, Ba-133, Cd-109, Co-57, and Co-60). The high loading of Bi2O3 in the PMMA samples improved the micro-hardness to nearly seven times that of the pure PMMA. With these enhancements, it was demonstrated that PMMA/Bi2O3 composites are promising gamma shielding materials. Furthermore, the fast UV curing exerts its great potential in significantly shortening the production cycle of shielding material to enable rapid manufacturing.
Keywords
Ultraviolet (UV) curing; Poly (methyl methacrylate); $Bi_2O_3$ composites; Radiation shielding;
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