Radiation shielding and enhanced thermal characteristics of high-density polyethylene reinforced with Al (OH)3/Pb2O3 for radioactive waste management

Khozemy, Ehab E.; Salem, Elsayeda Farid; Ali, Amr El‐Hag

doi:10.1016/j.radphyschem.2022.109976

Cited by 25 publications

(7 citation statements)

References 15 publications

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“…Using of polymer composites in attenuation of gamma rays has become an interesting field of research and it plays an important role in gamma radiation protection; in particular protection from scattering radiation from materials along the path of photon source. In order to study the behavior and the performance of polymer composites in radiation protection application, it is important to identify the total attenuation cross-section which are the basic parameters for the determination of the penetration depth of the photon in any material [ 13 , 14 , 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Improving Gamma Ray Shielding Behaviors of Polypropylene Using PbO Nanoparticles: An Experimental Study

et al. 2022

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Recently, polymers have entered into many medical and industrial applications. This work aimed to intensively study polypropylene samples (PP) embedded with micro and nanoparticles of PbO for their application in radiation shielding. Samples were prepared by adding 10%, 30%, and 50% by weight of PbO microparticles (mPbO) and adding 10% and 50% PbO nanoparticles (nPbO), in addition to the control sample (pure polypropylene). The morphology of the prepared samples was tested; on the other hand, the shielding efficiency of gamma rays was tested for different sources with different energies. The experimental linear attenuation coefficient (LAC) was determined using a NaI scintillation detector, the experimental results were compared with NIST-XCOM results, and a good agreement was noticed. The LAC was 0.8005 cm−1 for PP-10%nPbO and 0.6283 cm−1 for PP-10%mPbO while was 5.8793 cm−1 for PP-50%nPbO and 3.9268 cm−1 for PP-50%mPbO at 0.060 MeV. The LAC values have been converted to some specific values, such as half value layer (HVL), mean free path (MFP), tenth value layer (TVL), and radiation protection efficiency (RPE) which are useful for discussing the shielding capabilities for gamma-rays. The results of shielding parameters reveal that the PP embedded with nPbO gives better attenuation than its counterpart pp embedded with mPbO at all studied energies.

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Section: Introductionmentioning

confidence: 99%

Improving Gamma Ray Shielding Behaviors of Polypropylene Using PbO Nanoparticles: An Experimental Study

et al. 2022

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“…In order to better understand the gamma‐shielding performances of the developed UHMWPE composites, comparisons between the gamma‐shielding properties from the current work and those from similar materials were carried out. Khozemy et al showed that the HDPE composites containing a mixture of 50 pph Al(OH) 3 and 10 pph Pb 2 O 3 exhibited the μ value of 0.204 cm −1 (at 662‐keV gamma rays), 42 while Alharshan et al revealed that the HDPE composites could attenuate 662‐keV gamma rays with the μ value as high as 0.14495 cm −1 after the addition of 30 wt% PbO to HDPE 43 . These two examples clearly illustrate the promising gamma‐shielding capabilities of the developed UHMWPE composites, which had higher μ values (as high as 0.42 cm −1 and 0.15 cm −1 in 25 wt% Gd 2 O 3 /UHMWPE and 25 wt% Sm 2 O 3 /UHMWPE composites, respectively) than those from other common materials.…”

Section: Resultsmentioning

confidence: 99%

Comparisons of enhanced thermal neutron‐ and gamma‐shielding properties in UHMWPE composites containing surface‐treated Sm₂O₃ and Gd₂O₃ particles

Toyen

Anekratmontre

Wimolmala

et al. 2023

Polymers for Advanced Techs

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The rapid development and broad utilization of nuclear technologies has raised safety concerns, especially for those requiring radiation‐shielding equipment. To cope with such high demands and risks, the current study investigated the potential of utilizing ultra‐high‐molecular‐weight polyethylene (UHMWPE) composites containing varying contents of surface‐treated samarium oxide (Sm2O3) or gadolinium oxide (Gd2O3) particles as dual thermal neutron‐ and gamma‐shielding materials. The results showed that the thermal neutron‐ and gamma‐shielding abilities of the composites increased with increasing filler contents, as evidenced by the highest values of μ (in the case gamma rays), ∑t (in the case of thermal neutrons), and μm, as well as the lowest values of HVL and TVL, being achieved in the samples containing 25 wt% Sm2O3 or Gd2O3 (the maximum content investigated). Furthermore, based on the comparative thermal neutron‐shielding properties of the current composites to those of a common shielding product containing 15.9 wt% B2O3 (corresponding to 5 wt% B), the addition of 2.5 wt% Gd2O3 or 4.8 wt% Sm2O3 to the UHMWPE matrix was sufficient to attenuate thermal neutrons with equal efficiency to that of the referenced material. Furthermore, the results indicated that the addition of both fillers increased the density and hardness (Shore D) but reduced the degree of crystallinity, tensile strength, elongation at break, and dielectric strength of the composites, for which the degree of changes in each property largely depended on filler types and contents. In summary, the overall results suggested that both Sm2O3 and Gd2O3 could substantially enhance the thermal neutron‐ and gamma‐shielding properties of the composites, while the developed UHMWPE composites offered durability and excellent electrical properties that could be suitable for use in various applications.

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“…Meanwhile, polymer composites are less prone to cracks and lighter than concrete giving it an advantage over concrete during construction because of the ease of manipulation. 20 Earlier works demonstrate that the morphological, structural, and optical properties of polyethylenemolybdenum polymer composites are suitable for further radiation shielding studies. 21 To the best of our knowledge, this is the first time the composites investigated in this work are being investigated for dental radiology energies although Mansour et al 22 investigated the use of molybdenum and molybdenum compounds for low energy x-ray application.…”

Section: Introductionmentioning

confidence: 99%

“…Concrete is commonly used in the construction of radiological diagnostic facilities, 17–19 however, it is prone to cracks 17 and very heavy to manipulate during construction. Meanwhile, polymer composites are less prone to cracks and lighter than concrete giving it an advantage over concrete during construction because of the ease of manipulation 20 …”

Section: Introductionmentioning

confidence: 99%

The use of low‐density polyethylene‐molybdenum oxide polymer composites as radiation shielding laminates in dental radiology physical structures

Alyousef,

Tijani,

Alsuhybani

et al. 2023

J of Applied Polymer Sci

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Radiation protection is crucial in the protection of humans from the harmful effects of ionizing radiation. One of the most reliable ways of reducing the risk of occupationally exposed workers and the public in dental radiology is the installation of an effective radiation shielding barrier at the facility. Concrete barriers are predominantly used for dental shielding, however there is need to consider the use of lighter, ready‐made, and lower half value layer (HVL) materials as shielding materials in dental radiology facilities. In this work, low‐density polyethylene‐molybdenum oxide polymer composites were prepared (85C2H4‐15MoO3, 90C2H4‐10MoO3, and 95C2H4‐5MoO3), and the radiation attenuation measurements were carried out experimentally. The composites displayed acceptable x‐ray absorbing capabilities. 85C2H4‐15MoO3 polymer composite (DT1) showed optimal shielding in comparison with concrete. DT1 has an approximate HVL like concrete while it is 54.3% lighter than concrete. 85C2H4‐15MoO3 polymer composite is 1.5%, 0.8%, and 6.3% higher in linear attenuation coefficient than concrete at 60, 70, and 80 kVps, respectively. This implies that DT1 can effectively replace concrete at dental diagnostic energies.

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Radiation shielding and enhanced thermal characteristics of high-density polyethylene reinforced with Al (OH)3/Pb2O3 for radioactive waste management

Cited by 25 publications

References 15 publications

Improving Gamma Ray Shielding Behaviors of Polypropylene Using PbO Nanoparticles: An Experimental Study

Improving Gamma Ray Shielding Behaviors of Polypropylene Using PbO Nanoparticles: An Experimental Study

Comparisons of enhanced thermal neutron‐ and gamma‐shielding properties in UHMWPE composites containing surface‐treated Sm₂O₃ and Gd₂O₃ particles

The use of low‐density polyethylene‐molybdenum oxide polymer composites as radiation shielding laminates in dental radiology physical structures

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Radiation shielding and enhanced thermal characteristics of high-density polyethylene reinforced with Al (OH)3/Pb2O3 for radioactive waste management

Cited by 25 publications

References 15 publications

Improving Gamma Ray Shielding Behaviors of Polypropylene Using PbO Nanoparticles: An Experimental Study

Improving Gamma Ray Shielding Behaviors of Polypropylene Using PbO Nanoparticles: An Experimental Study

Comparisons of enhanced thermal neutron‐ and gamma‐shielding properties in UHMWPE composites containing surface‐treated Sm2O3 and Gd2O3 particles

The use of low‐density polyethylene‐molybdenum oxide polymer composites as radiation shielding laminates in dental radiology physical structures

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Comparisons of enhanced thermal neutron‐ and gamma‐shielding properties in UHMWPE composites containing surface‐treated Sm₂O₃ and Gd₂O₃ particles