ArticlePolymers2025
Enhancing Radiation Shielding Properties of Pharmaceutical Polymers Through Zinc Oxide Incorporation: A Study on Gamma Energy Attenuation.
Article in Polymers, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
An investigation was carried out to improve the gamma radiation shielding properties of Benecel K4M pharmaceutical polymer using zinc oxide (ZnO) at concentrations from 0 to 6 wt.%. Compressed composite tablet samples were prepared and tested in the range of photon energies 59.5 to 1332 keV for the assessment of various shielding parameters, including linear attenuation coefficient, radiation protection efficiency (RPE), and mean free path (MFP). As the ZnO content increased, the attenuation properties of the material showed improved shielding behavior, which was attributed to its high density and atomic number. At 59.9 keV, RPE increased from 6.9% for the pure polymer to 12.2% for the 6 wt.% composite, whereas MFP decreased from 13.9 cm to 7.6 cm. The results indicate that ZnO addition significantly enhances the shielding efficiency of Benecel K4M, demonstrating that ZnO can serve as a lightweight and non-toxic alternative to heavy-metal-based materials for pharmaceutical protection in radiation-rich environments.
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