1. Dysprosium-enriched polymer nanocomposites: Assessing radiation shielding and optical properties.
- Author
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Abulyazied, D.E., Issa, Shams A.M., Saudi, H.A., Abomostafa, H.M., and Zakaly, Hesham M.H.
- Subjects
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POLYMERIC nanocomposites , *OPTICAL properties , *RADIATION protection , *GAMMA rays , *REFRACTIVE index , *RADIATION shielding , *BAND gaps - Abstract
This paper includes a comprehensive analysis of the radiation shielding, optical properties, and structural makeup of polymer composites that contain Dy 2 O 3 additions. XRD-pattern investigates the effect of loading Dy 2 O 3 content on PS, with the average crystallite size of Dy 2 O 3 decreases from 39 nm to 30 nm as Dy 2 O 3 increases from 2.5 to 7.5 wt% in the PS matrix. The optical properties of the nanocomposites showed that with the increase in the Dy 2 O 3 content, the transmittance, as well as the direct and indirect band gap, decreased. The E g Indirect bandgap decreased from 3.1 to 2.75 eV with a Dy 2 O 3 increase from 0 to 7.5 wt%, while the E g direct Bandgap reduced from 4.6 to 4.35 eV. While the Urbach energy Eu and the refractive index increase, Eu rises from 0.48 to 0.60 e V, and n improves from 1.4 to 1.78 from 0 to 7.5 wt%. In order to conduct an accurate analysis of the gamma-ray attenuation capabilities of the selected new polymer composites, these composites were manufactured with varying proportions of the additive components. With the assistance of a Na(Tl) detector, experimental assessments were carried out on the gamma rays throughout a broad spectrum of photon energies, ranging from 81 keV up to 1416 keV. The sample encased in PS/Dy7.5 demonstrates excellent radiation attenuation, and it is important to note that this novel polymer shielding material does not include any hazardous components. • "Dy2O3 in PS enhances radiation shielding". • "Increased Dy2O3 reduces PS's transmittance". • "Dy2O3 addition lowers bandgap energy". • "Higher Dy2O3 increases refractive index". • "Dy2O3/PS composites ideal for radiation protection". [ABSTRACT FROM AUTHOR]
- Published
- 2024
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