Nano tin oxide/dimethyl polysiloxane reinforced composite as a flexible radiation protecting material

Gouda, Mona M.; Abbas, Mahmoud I.; Hammoury, Sabbah I; Zard, Kareman; El‐Khatib, Ahmed M.

doi:10.1038/s41598-023-27464-z

Cited by 15 publications

(11 citation statements)

References 33 publications

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“…The iron slag FTIR spectra display different absorption bands at 3432, 1633, 1434, 1112, 986,873 and 708 cm −1 . The band at 3432 cm −1 belongs to the stretching vibration of the hydroxyl group caused by the weakly absorbed water molecules on the slag surface, while the band at 1633 cm −1 is representative of portlandite 52 . The peculiar absorption bands at 1434, 873 and 708 cm −1 are assigned to the asymmetric stretching mode and bending mode of the carbonate group, respectively 39 .…”

Section: Resultsmentioning

confidence: 99%

Polyurethane reinforced with micro/nano waste slag as a shielding panel for photons (experimental and theoretical study)

El-Khatib,

Abbas,

Mahmoud

et al. 2024

Sci Rep

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This study not only provides an innovative technique for producing rigid polyurethane foam (RPUF) composites, but it also offers a way to reuse metallurgical solid waste. Rigid polyurethane (RPUF) composite samples have been prepared with different proportions of iron slag as additives, with a range of 0–25% mass by weight. The process of grinding iron slag microparticles into iron slag nanoparticles powder was accomplished with the use of a high-energy ball mill. The synthesized samples have been characterized using Fourier Transform Infrared Spectroscopy, and Scanning Electron Microscope. Then, their radiation shielding properties were measured by using A hyper-pure germanium detector using point sources 241Am, 133 BA, 152 EU, 137Cs, and 60Co, with an energy range of 0.059–1.408 MeV. Then using Fluka simulation code to validate the results in the energy range of photon energies of 0.0001–100 MeV. The linear attenuation coefficient, mass attenuation coefficient, mean free path, half-value layer and tenth-value layer, were calculated to determine the radiation shielding characteristics of the composite samples. The calculated values are in good agreement with the calculated values. The results of this study showed that the gamma-ray and neutron attenuation parameters of the studied polyurethane composite samples have improved. Moreover, the effect of iron slag not only increases the gamma-ray attenuation shielding properties but also enhances compressive strength and the thermal stability. Which encourages us to use polyurethane iron-slag composite foam in sandwich panel manufacturing as walls to provide protection from radiation and also heat insulation.

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Section: Resultsmentioning

confidence: 99%

Polyurethane reinforced with micro/nano waste slag as a shielding panel for photons (experimental and theoretical study)

El-Khatib,

Abbas,

Mahmoud

et al. 2024

Sci Rep

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“…Additionally, the increased thickness of the interacting material as a result of the increased penetration depth of the materials causes an increase in scattering events in the interacting medium, particularly for the material with the greatest equivalent atomic number. As a result, the EBF values are high [ 36 ].…”

Section: Resultsmentioning

confidence: 99%

Gamma Attenuation Features of White Cement Mortars Reinforced by Micro/Nano Bi2O3 Particles

et al. 2023

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This study aims to explore the radiation protection properties of white mortars based on white cement as a binder and Bi2O3 micro and nanoparticles in proportions of 15 and 30% by weight as replacement sand. The average particle size of micro- and nano-Bi2O3 was measured using a transmission electron microscope (TEM). The cross-sectional morphology and distribution of Bi2O3 within the samples can be obtained by scanning electron microscopy (SEM), showing that nanoscale Bi2O3 particles have a more homogeneous distribution within the samples than microscale Bi2O3 particles. The shielding parameters of the proposed mortars were measured using the HPGe detector at various γ-ray energies emitted by standard radioactive point sources 241Am, 133Ba, 60Co, 137Cs, and 152Eu. The experimental values of the prepared mortars’ mass attenuation coefficients (MAC) match well with those determined theoretically from the XCOM database. Other shielding parameters, including half value layer (HVL), tenth value layer (TVL), mean free path (MFP), effective electron density (Neff), effective atomic number (Zeff), equivalent atomic number (Zeq), and exposure buildup factor (EBF), were also determined at different photon energies to provide more shielding information about the penetration of gamma radiation into the selected mortars. The obtained results indicated that the sample containing 30% by weight of nano Bi2O3 has the largest attenuation coefficient value. Furthermore, the results show that the sample with a high concentration of Bi2O3 has the highest equivalent atomic numbers and the lowest HVL, TVL, MFP, and EBF values. Finally, it can be concluded that Bi2O3 nanoparticles have higher efficiency and protection compared to microparticles, especially at lower gamma-ray energies.

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“…The sources were chosen to cover a wide range of energy where five radioactive sources were used as follows, Am-241 (0.06 MeV), Ba-133 (0.081, 0.356 MeV), Cs-137(0.662 MeV), Co-60(1.173, 1.333 MeV) and Eu-152(0.121, 0.244, 344 ,0.778, 1.085, 1.408 MeV). These radioactive point sources were purchased from the Physikalisch—Technische Bundesanstalt (PTB) in Braunschweig and Berlin, which is the national institute for Science and Technology and the highest technical authority of the Federal Republic of Germany for the field of metrology and certain sectors of safety engineering 25 – 30 .…”

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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Nano tin oxide/dimethyl polysiloxane reinforced composite as a flexible radiation protecting material

Cited by 15 publications

References 33 publications

Polyurethane reinforced with micro/nano waste slag as a shielding panel for photons (experimental and theoretical study)

Polyurethane reinforced with micro/nano waste slag as a shielding panel for photons (experimental and theoretical study)

Gamma Attenuation Features of White Cement Mortars Reinforced by Micro/Nano Bi2O3 Particles

Radiation attenuation properties of chemically prepared MgO nanoparticles/HDPE composites

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