Enhancing the Gamma-Radiation-Shielding Properties of Gypsum–Lime–Waste Marble Mortars by Incorporating Micro- and Nano-PbO Particles

Alabsy, Mahmoud T.; Gouda, Mona M.; Abbas, Mahmoud I.; Al-Balawi, Shoaa Mofleh; El‐Khatib, Ahmed M.

doi:10.3390/ma16041577

Cited by 12 publications

(7 citation statements)

References 29 publications

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“…The MFP, which is defined as the average distance moved by a photon between two subsequent reactions, this parameter was given in Eq. ( 6 ) 52 : …”

Section: Methodsmentioning

confidence: 99%

Attenuation properties of poly methyl methacrylate reinforced with micro/nano ZrO2 as gamma-ray shields

Alabsy,

Abbas,

El-khatib

et al. 2024

Sci Rep

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This research aimed to examine the radiation shielding properties of unique polymer composites for medical and non-medical applications. For this purpose, polymer composites, based on poly methyl methacrylate (PMMA) as a matrix, were prepared and reinforced with micro- and nanoparticles of ZrO2 fillers at a loading of 15%, 30%, and 45% by weight. Using the high purity germanium (HPGe) detector, the suggested polymer composites’ shielding characteristics were assessed for various radioactive sources. The experimental values of the mass attenuation coefficients (MAC) of the produced composites agreed closely with those obtained theoretically from the XCOM database. Different shielding parameters were estimated at a broad range of photon energies, including the linear attenuation coefficient (μ), tenth value layer (TVL), half value layer (HVL), mean free path (MFP), effective electron density (Neff), effective atomic number (Zeff), and equivalent atomic number (Zeq), as well as exposure buildup factor (EBF) and energy absorption buildup factor (EABF) to provide more shielding information about the penetration of γ-rays into the chosen composites. The results showed that increasing the content of micro and nano ZrO2 particles in the PMMA matrix increases μ values and decreases HVL, TVL, and MFP values. P-45nZ sample with 45 wt% of ZrO2 nanoparticles had the highest μ values, which varied between 2.6546 and 0.0991 cm−1 as γ-ray photon energy increased from 0.0595 to 1.408 MeV, respectively. Furthermore, the highest relative increase rate in μ values between nano and micro composites was 17.84%, achieved for the P-45nZ sample at 59.53 keV. These findings demonstrated that ZrO2 nanoparticles shield radiation more effectively than micro ZrO2 even at the same photon energy and filler wt%. Thus, the proposed nano ZrO2/PMMA composites can be used as effective shielding materials to lessen the transmitted radiation dose in radiation facilities.

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“…The MFP, which is defined as the average distance moved by a photon between two subsequent reactions, this parameter was given in Eq. ( 6 ) 52 : …”

Section: Methodsmentioning

confidence: 99%

Attenuation properties of poly methyl methacrylate reinforced with micro/nano ZrO2 as gamma-ray shields

Alabsy,

Abbas,

El-khatib

et al. 2024

Sci Rep

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“…The count rate (N) was measured for all energies as a function of disc thickness (x) either for micro or nano MgO /HDPE samples. From the slope, LAC was calculated experimentally by the next equation 31 , 32 . …”

Section: Methodsmentioning

confidence: 99%

Radiation attenuation properties of chemically prepared MgO nanoparticles/HDPE composites

El‐Khatib

Gouda

Fouad

et al. 2023

Sci Rep

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Sheets of high-density polyethylene (HDPE) loaded with magnesium oxide in micro and nano were synthesized with different weight percentages of micro-MgO (0,5,10,20 and 30% by weight) and nano-MgO (5 and 30%) and shaped in form of disc and dog bone shape. The morphological, mechanical, and attenuation characteristics of each concentration were determined. The linear attenuation coefficients (LAC) of the prepared discs were calculated using a well-calibrated scintillation detector and five standard gamma-ray point sources (241Am, 133Ba, 137Cs, 60Co and 152Eu). The LAC was theoretically calculated for HDPE/micro-MgO composites using XCOM software. A good agreement between the theoretical and experimental results was observed. The comparison between micro and nano-MgO as a filler in HDPE was evaluated. The results proved that the loaded nano-MgO in different proportions of HDPE produced greater attenuation coefficients than its micro counterpart. The addition of nano MgO with different weight percentage led to a significant improvement in the mechanical properties of HDPE, the ultimate force and ultimate stress increased as the concentration of nano MgO increased, and the young modulus of HDPE also increased with increasing concentration of micro and nano MgO.

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“…Considering their special qualities [16,17], which include affordable price, simplicity of processing, light weight, flexibility, good mechanical strength, and optical and electrical properties [18]. In industrial applications including waveguiding layers, biochemical sensor implantation, and extruding machines, the mechanical properties of polymers like stiffness and tensile strength are crucial [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Study Attenuation Parameters and Physical Properties of Silicone Rubber Reinforced with Nano- and Micro-Sized Aluminum Oxide Composites

El-Khatib,

Elesh,

Hamada

et al. 2024

Silicon

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Theoretical and practical research has been done on reinforced polymer composites, a more recent type of improved shielding material. This study examined the protective qualities of silicone rubber packed with nano- and micro-sized Al2O3. Aspects like the effective atomic number, mean free path, linear attenuation coefficient, and mass attenuation coefficient are used to evaluate these shielding materials. In terms of weight percentage and size, Al2O3 particles have been used to reinforce silicone rubber. Energy dispersive X-ray spectroscopy, X-ray diffraction, UV visible spectrometer, thermal analysis, and Fourier transform infrared spectroscopy have been investigated. The results show that aluminum oxide nanoparticles have a more homogeneous distribution within the samples than micro aluminum oxide particles, which is due to the fact that nanoparticles have a very large surface area-to-volume ratio when compared to the same material in bulk. As a result, the sample containing 40% by weight of nano Al2O3 has the largest attenuation coefficient value and the lowest half value layer (HVL), tenth value layer (TVL), and mean free path (MFP) values. Finally, it can be concluded that the sample containing nano Al2O3 can be utilized to create an innovative and versatile silicone rubber material. This material holds great potential for the manufacturing of gloves and protective jackets, specifically designed for radiation and nuclear shielding applications.

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Enhancing the Gamma-Radiation-Shielding Properties of Gypsum–Lime–Waste Marble Mortars by Incorporating Micro- and Nano-PbO Particles

Cited by 12 publications

References 29 publications

Attenuation properties of poly methyl methacrylate reinforced with micro/nano ZrO2 as gamma-ray shields

Attenuation properties of poly methyl methacrylate reinforced with micro/nano ZrO2 as gamma-ray shields

Radiation attenuation properties of chemically prepared MgO nanoparticles/HDPE composites

Study Attenuation Parameters and Physical Properties of Silicone Rubber Reinforced with Nano- and Micro-Sized Aluminum Oxide Composites

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