1
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Zaharescu T, Mirea R, Borbath T, Borbath I. Stability Qualification of Resins/Metallic Oxide Composites for Surface Oxidative Protection. Polymers (Basel) 2024; 16:333. [PMID: 38337222 DOI: 10.3390/polym16030333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/15/2024] [Accepted: 01/23/2024] [Indexed: 02/12/2024] Open
Abstract
The accelerated degradation of alkyd resins via γ-irradiation is investigated using non-isothermal chemiluminescence. The stability qualification is possible through the comparison of emission intensities on a temperature range starting from 100 °C up to 250 °C under accelerated degradation caused by radiolysis scission. The measurements achieved in the samples of cured state resin modified by various inorganic oxides reveal the influence of metallic traces on the aging amplitude, when the thermal resistance increases as the irradiation dose is augmented. Even though the unirradiated samples present a prominent chemiluminescence intensity peak at 80 °C, the γ-processed specimens show less intense spectra under the pristine materials and the oxidation starts smoothly after 75 °C. The values of activation energies required for oxidative degradation of the sample subjected to 100 kGy are significantly higher in the composite states than in the neat resin. The degradation mechanism of polymerized resins is discussed taking into account the effects of fillers on the stability of studied epoxy resin at various temperatures when the degradation and crosslinking are in competition for the decay of free radical.
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Affiliation(s)
- Traian Zaharescu
- INCDIE-ICPE CA, Radiochemical Center, 313 Splaiul Unirii, Ro 030138 Bucharest, Romania
- ROSEAL SA, 5A Nicolae Bălcescu, Harghita District, Ro 535600 Odorheiu Secuiesc, Romania
| | - Radu Mirea
- Romanian Research and Development Institute for Gas Turbines-COMOTI, 220D Iuliu Maniu Bd., Ro 061125 Bucharest, Romania
| | - Tunde Borbath
- ROSEAL SA, 5A Nicolae Bălcescu, Harghita District, Ro 535600 Odorheiu Secuiesc, Romania
| | - Istvan Borbath
- ROSEAL SA, 5A Nicolae Bălcescu, Harghita District, Ro 535600 Odorheiu Secuiesc, Romania
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2
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Abualroos NJ, Idris MI, Ibrahim H, Kamaruzaman MI, Zainon R. Physical, mechanical, and microstructural characterisation of tungsten carbide-based polymeric composites for radiation shielding application. Sci Rep 2024; 14:1375. [PMID: 38228643 DOI: 10.1038/s41598-023-49842-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 12/12/2023] [Indexed: 01/18/2024] Open
Abstract
Polymeric based composites have gained considerable attention as potential candidates for advanced radiation shielding applications due to their unique combination of high-density, radiation attenuation properties and improved mechanical strength. This study focuses on the comprehensive characterisation of polymeric based composites for radiation shielding applications. The objective of this study was to evaluate the physical, mechanical and microstructural properties of tungsten carbide-based epoxy resin and tungsten carbide cobalt-based epoxy resin for its efficiency in shielding against gamma-rays ranging from 0.6 up to 1.33 MeV. Polymeric composites with different weight percentages of epoxy resin (40 wt%, 35 wt%, 30 wt%, 25 wt%, 20 wt%, 15 wt% and 10 wt%) were fabricated, investigated and compared to conventional lead shield. The attenuation of the composites was performed using NaI (Tl) gamma-ray spectrometer to investigate the linear and mass attenuation coefficients, half value layer, and mean free path. High filler loadings into epoxy resin matrix (90% filler/10% epoxy) exhibited excellent gamma shielding properties. Mechanical properties, such as hardness were examined to assess the structural integrity and durability of the composites under various conditions. The fabricated composites showed a good resistance, the maximum hardness was attributed to composites with small thickness. The high loading of fillers in the epoxy matrix improved the microhardness of the composites. The distribution of the filler powder within the epoxy matrix was investigated using FESEM/EDX. The results revealed the successful incorporation of tungsten carbide and cobalt particles into the polymer matrix, leading to increased composite density and enhanced radiation attenuation. The unique combination of high-density, radiation attenuation, and improved mechanical properties positions polymeric based composites as promising candidates for radiation protection field.
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Affiliation(s)
- Nadin Jamal Abualroos
- Department of Biomedical Imaging, Advanced Medical and Dental Institute, SAINS@BERTAM, Universiti Sains Malaysia, 13200, Kepala Batas, Pulau Pinang, Malaysia
- Health Sciences Centre, School of Medicine, University College Dublin, Belfield, Dublin 4, Ireland
| | - Mohd Idzat Idris
- Nuclear Technology Research Centre, Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, UKM, 43600, Bangi, Selangor, Malaysia
| | - Haidi Ibrahim
- School of Electrical and Electronic Engineering, USM Engineering Campus, Universiti Sains Malaysia, 14300, Nibong Tebal, Pulau Pinang, Malaysia
| | - Muhammad Izzat Kamaruzaman
- Chembio Technology Sdn Bhd, 19, Persiaran Seksyen 4/3, Bandar Putra Bertam, 13200, Kepala Batas, Pulau Pinang, Malaysia
| | - Rafidah Zainon
- Department of Biomedical Imaging, Advanced Medical and Dental Institute, SAINS@BERTAM, Universiti Sains Malaysia, 13200, Kepala Batas, Pulau Pinang, Malaysia.
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3
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Wang B, Qiu T, Yuan L, Fang Q, Wang X, Guo X, Zhang D, Lai C, Wang Q, Liu Y. A comparative study between pure bismuth/tungsten and the bismuth tungsten oxide for flexible shielding of gamma/X rays. Radiat Phys Chem Oxf Engl 1993 2023. [DOI: 10.1016/j.radphyschem.2023.110906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
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4
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Sisin NNT, Rahman WN. Potentials of Bismuth-Based Nanoparticles and Baicalein Natural Compounds as Radiosensitizers in Cancer Radiotherapy: a Review. BIONANOSCIENCE 2023. [DOI: 10.1007/s12668-022-01057-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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5
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Nontoxic flexible PVC nanocomposites with Ta2O5 and Bi2O3 nanoparticles for shielding diagnostic X-rays. Radiat Phys Chem Oxf Engl 1993 2023. [DOI: 10.1016/j.radphyschem.2022.110512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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6
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Mhareb MHA, Sayyed MI, Flemban T, Dwaikat N, Ashiq MGB, Alajerami YSM. Experimental shielding properties for a novel glassy system. Appl Radiat Isot 2022; 189:110408. [PMID: 36029638 DOI: 10.1016/j.apradiso.2022.110408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 07/26/2022] [Accepted: 08/04/2022] [Indexed: 11/18/2022]
Abstract
In the current study, we fabricated a series of boro-tellurite glass samples with a composition 10SrO-10Al2O3-10MoO3-(70-x)B2O3-xTeO2, where (x = 0, 17.5, 35, 52.5, and 70 mol%) via an ordinary melt-quench method. The glass structure was explored by X-ray diffraction (XRD), physical and structural properties. XRD results affirm the existence of two broad peaks, proving the amorphous state of the current glasses. The acquired results exhibit a linear relationship between the density, Poisson's ratio, and the addition of TeO2 amounts. The addition of TeO2 to the glass system shows a rise in glass stability and a reduction in packing density. Additionally, the values of mass attenuation coefficient (MAC) were determined experimentally within five energies (0.184, 0.280, 0.661, 0.710, and 0.810 MeV) from two radiation sources (166Ho and 137Cs). The (MAC)exp results were compared with XCOM values, and the compared values showed excellent compatibility. From the experimental results, many radiation shielding features involving half-value layer (HVL), mean free path (MFP), tenth value layer (TVL), and radiation protection efficiency (RPE) were computed. From the obtained results, it can be concluded that the TeSB4 sample has the highest stability and absorption for radiation, indicating the ability to use it as a radiation shielding substance.
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Affiliation(s)
- M H A Mhareb
- Department of Physics, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam, 31441, Saudi Arabia; Basic and Applied Scientific Research Center, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam, 31441, Saudi Arabia.
| | - M I Sayyed
- Department of Physics, Faculty of Science, Isra University, Amman, Jordan
| | - Tahani Flemban
- Department of Physics, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam, 31441, Saudi Arabia; Basic and Applied Scientific Research Center, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam, 31441, Saudi Arabia
| | - Nidal Dwaikat
- Physics Department, College of Engineering and Physics, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia; Interdisciplinary Research Center for Advanced Materials, King Fahd University of Petroleum & Minerals, Dhahran, Saudi Arabia
| | - M G B Ashiq
- Department of Physics, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam, 31441, Saudi Arabia; Basic and Applied Scientific Research Center, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam, 31441, Saudi Arabia
| | - Y S M Alajerami
- Medical Imaging Department, Applied Medical Sciences Faculty, Al Azhar University-Gaza, Palestine
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7
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Prabhu S, S. G Bubbly, Gudennavar SB. X-Ray and γ-Ray Shielding Efficiency of Polymer Composites: Choice of Fillers, Effect of Loading and Filler Size, Photon Energy and Multifunctionality. POLYM REV 2022. [DOI: 10.1080/15583724.2022.2067867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Srilakshmi Prabhu
- Department of Physics and Electronics, Bangalore Central Campus, CHRIST (Deemed to be University), Bengaluru, Karnataka, India
| | - S. G Bubbly
- Department of Physics and Electronics, Bangalore Central Campus, CHRIST (Deemed to be University), Bengaluru, Karnataka, India
| | - Shivappa B. Gudennavar
- Department of Physics and Electronics, Bangalore Central Campus, CHRIST (Deemed to be University), Bengaluru, Karnataka, India
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8
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Alım B, Özpolat ÖF, Şakar E, Han İ, Arslan İ, Singh V, Demir L. Precipitation-hardening stainless steels: Potential use radiation shielding materials. Radiat Phys Chem Oxf Engl 1993 2022. [DOI: 10.1016/j.radphyschem.2022.110009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Irradiation Effects in Polymer Composites for Their Conversion into Hybrids. JOURNAL OF COMPOSITES SCIENCE 2022. [DOI: 10.3390/jcs6040109] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
In this paper several aspects of profound modifications caused by high energy exposures are presented as possible candidates for the efficient adjusting processing of polymer materials. The class of hybrid composites receives special attention due to the large spectrum of formulations, where the interphase interaction decisively influences the material properties. They represent potential start points for the intimate uniformity of hybrid morphologies. Their radiation processing turns composites onto hybrid morphology with expected features, because the transferred energy is spent for the modification of components and for their compatibility. The essential changes achieved in radiation processed composites explain the new material behavior and durability based on the peculiar restructuring of polymer molecules that occurred in the polymer phase. During high energy irradiation, the interaction between intermediates born in the constitutive phases may convert the primary composites into hybrids, integrating them into large applicability spheres. During the radiation exposure, the resulting hybrids gain a continuous dispersion by means of new chemical bonds. This type of compounds achieves some specific structural modifications in the polymer phase, becoming stable hybrid composites. The functional properties of hybrids definitely influence the material behavior due to the molecular changes based on the structural reasons. The radiolysis of the vulnerable component becomes an appropriate opportunity for the creation of new material with improved stability. The radiation treatment is a proper conversion procedure by which common mixtures may become continuously reorganized. This review presents several examples for the radiation modifications induced by radiation exposure that allow the compatibilization and binding of components as well as the creation of new structures with improved properties. This approach provides the reference patterns for the extension of radiation processing over the well-conducted adjustments of polymer composites, when certain material features are compulsorily required. From this review, several solutions for the adjustment of regular polymer composites into hybrid systems may become conceivable by the extended radiation processing.
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10
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Nuñez-Briones A, Benavides R, Martínez-Pardo M, Carrasco-Abrego H, Kotzian-Pereira-Benavides C, Espejo-Villalobos D, García-Cerda L. Effect of gamma dose rate in the crosslinking of PVC composites used for radiation protection in radiology. Radiat Phys Chem Oxf Engl 1993 2022. [DOI: 10.1016/j.radphyschem.2021.109866] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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11
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Evaluation of the Effect of Different Nano-Size of WO3 on the Structural and Mechanical Properties of HDPE. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-021-02219-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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12
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Şakar E, Alim B, Fırat Özpolat Ö, Ceviz Şakar B, Baltakesmez A, Akbaba U. A surveying of photon and particle radiation interaction characteristics of some perovskite materials. Radiat Phys Chem Oxf Engl 1993 2021. [DOI: 10.1016/j.radphyschem.2021.109719] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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13
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Acevedo-Del-Castillo A, Águila-Toledo E, Maldonado-Magnere S, Aguilar-Bolados H. A Brief Review on the High-Energy Electromagnetic Radiation-Shielding Materials Based on Polymer Nanocomposites. Int J Mol Sci 2021; 22:9079. [PMID: 34445783 PMCID: PMC8396447 DOI: 10.3390/ijms22169079] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 08/11/2021] [Accepted: 08/20/2021] [Indexed: 12/04/2022] Open
Abstract
This paper revises the use of polymer nanocomposites to attenuate high-energy electromagnetic radiation (HE-EMR), such as gamma radiation. As known, high-energy radiation produces drastic damage not only in facilities or electronic devices but also to life and the environment. Among the different approaches to attenuate the HE-EMR, we consider the use of compounds with a high atomic number (Z), such as lead, but as known, lead is toxic. Therefore, different works have considered low-toxicity post-transitional metal-based compounds, such as bismuth. Additionally, nanosized particles have shown higher performance to attenuate HE-EMR than those that are micro-sized. On the other hand, materials with π-conjugated systems can also play a role in spreading the energy of electrons ejected as a consequence of the interaction of HE-EMR with matter, preventing the ionization and bond scission of polymers. The different effects produced by the interactions of the matter with HE-EMR are revised. The increase of the shielding properties of lightweight, flexible, and versatile materials such as polymer-based materials can be a contribution for developing technologies to obtain more efficient materials for preventing the damage produced for the HE-EMR in different industries where it is found.
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Affiliation(s)
- Angel Acevedo-Del-Castillo
- Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago 8380494, Chile; (A.A.-D.-C.); (E.Á.-T.); (S.M.-M.)
| | - Ernesto Águila-Toledo
- Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago 8380494, Chile; (A.A.-D.-C.); (E.Á.-T.); (S.M.-M.)
| | - Santiago Maldonado-Magnere
- Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago 8380494, Chile; (A.A.-D.-C.); (E.Á.-T.); (S.M.-M.)
| | - Héctor Aguilar-Bolados
- Departamento de Polímeros, Facultad de Ciencias Químicas, Universidad de Concepción, Concepción 3349001, Chile
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14
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Prabhu S, Bubbly SG, Gudennavar SB. Thermal, mechanical and γ‐ray shielding properties of micro‐ and
nano‐Ta
2
O
5
loaded
DGEBA
epoxy resin composites. J Appl Polym Sci 2021. [DOI: 10.1002/app.51289] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Srilakshmi Prabhu
- Department of Physics and Electronics CHRIST (Deemed to be University), Bangalore Central Campus Bengaluru India
| | - S. G. Bubbly
- Department of Physics and Electronics CHRIST (Deemed to be University), Bangalore Central Campus Bengaluru India
| | - Shivappa B. Gudennavar
- Department of Physics and Electronics CHRIST (Deemed to be University), Bangalore Central Campus Bengaluru India
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15
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Saenboonruang K, Poltabtim W, Thumwong A, Pianpanit T, Rattanapongs C. Rare-Earth Oxides as Alternative High-Energy Photon Protective Fillers in HDPE Composites: Theoretical Aspects. Polymers (Basel) 2021; 13:polym13121930. [PMID: 34200711 PMCID: PMC8230413 DOI: 10.3390/polym13121930] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/06/2021] [Accepted: 06/09/2021] [Indexed: 11/21/2022] Open
Abstract
This work theoretically determined the high-energy photon shielding properties of high-density polyethylene (HDPE) composites containing rare-earth oxides, namely samarium oxide (Sm2O3), europium oxide (Eu2O3), and gadolinium oxide (Gd2O3), for potential use as lead-free X-ray-shielding and gamma-shielding materials using the XCOM software package. The considered properties were the mass attenuation coefficient (µm), linear attenuation coefficient (µ), half value layer (HVL), and lead equivalence (Pbeq) that were investigated at varying photon energies (0.001–5 MeV) and filler contents (0–60 wt.%). The results were in good agreement (less than 2% differences) with other available programs (Phy-X/PSD) and Monte Carlo particle transport simulation code, namely PHITS, which showed that the overall high-energy photon shielding abilities of the composites considerably increased with increasing rare-earth oxide contents but reduced with increasing photon energies. In particular, the Gd2O3/HDPE composites had the highest µm values at photon energies of 0.1, 0.5, and 5 MeV, due to having the highest atomic number (Z). Furthermore, the Pbeq determination of the composites within the X-ray energy ranges indicated that the 10 mm thick samples with filler contents of 40 wt.% and 50 wt.% had Pbeq values greater than the minimum requirements for shielding materials used in general diagnostic X-ray rooms and computerized tomography rooms, which required Pbeq values of at least 1.0 and 1.5 mmPb, respectively. In addition, the comparisons of µm, µ, and HVL among the rare-earth oxide/HDPE composites investigated in this work and other lead-free X-ray shielding composites revealed that the materials developed in this work exhibited comparable X-ray shielding properties in comparison with that of the latter, implying great potential to be used as effective X-ray shielding materials in actual applications.
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Affiliation(s)
- Kiadtisak Saenboonruang
- Department of Applied Radiation and Isotopes, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (W.P.); (A.T.); (T.P.); (C.R.)
- Specialized Center of Rubber and Polymer Materials in Agriculture and Industry (RPM), Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
- Correspondence: ; Tel.: +66-25-625555 (ext. 646219)
| | - Worawat Poltabtim
- Department of Applied Radiation and Isotopes, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (W.P.); (A.T.); (T.P.); (C.R.)
| | - Arkarapol Thumwong
- Department of Applied Radiation and Isotopes, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (W.P.); (A.T.); (T.P.); (C.R.)
| | - Theerasarn Pianpanit
- Department of Applied Radiation and Isotopes, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (W.P.); (A.T.); (T.P.); (C.R.)
| | - Chanis Rattanapongs
- Department of Applied Radiation and Isotopes, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (W.P.); (A.T.); (T.P.); (C.R.)
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16
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Muthamma MV, Prabhu S, Bubbly SG, Gudennavar SB. Micro and nano Bi 2O 3 filled epoxy composites: Thermal, mechanical and γ-ray attenuation properties. Appl Radiat Isot 2021; 174:109780. [PMID: 34052516 DOI: 10.1016/j.apradiso.2021.109780] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 04/24/2021] [Accepted: 05/09/2021] [Indexed: 10/21/2022]
Abstract
Polymer composites have attracted considerable attention as potential light-weight and cost-effective materials for radiation shielding and protection. In view of this, the present work focusses on development of lead-free composites of diglycidyl ether of bisphenol A (DGEBA) epoxy resin with micro (~ 10 μm) and nano (~ 20 nm) bismuth (III) oxide (Bi2O3) fillers, using solution casting technique. Thermal, mechanical and γ-ray attenuation properties of the composites were studied by varying the filler loading. Inclusion of the fillers into epoxy matrix was confirmed both structurally and morphologically by XRD and SEM, respectively. Thermogravimetric analysis (TGA) showed the thermal stability of composites to be as high as 400 °C. The nanocomposites exhibited relatively higher thermal stability than their micro counterparts. Among the composites, 14 wt% nano-Bi2O3/epoxy composites showed highest tensile strength of 326 MPa, which is about 38% higher than 30 wt% micro Bi2O3/epoxy composites. Mass attenuation coefficients (μ/ρ) of the composites were evaluated at γ-ray energies ranging from 0.356 to 1.332 MeV. Nanocomposites showed better γ-ray shielding at all energies (0.356, 0.511, 0.662, 1.173, 1.280 and 1.332 MeV) than micro composites with same filler loading. These studies revealed the significance of nano-sized fillers in enhancing overall performance of the composites.
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Affiliation(s)
- M V Muthamma
- Department of Physics and Electronics, CHRIST (Deemed to be University), Bangalore Central Campus, Bengaluru, 560029, Karnataka, India
| | - Srilakshmi Prabhu
- Department of Physics and Electronics, CHRIST (Deemed to be University), Bangalore Central Campus, Bengaluru, 560029, Karnataka, India
| | - S G Bubbly
- Department of Physics and Electronics, CHRIST (Deemed to be University), Bangalore Central Campus, Bengaluru, 560029, Karnataka, India.
| | - S B Gudennavar
- Department of Physics and Electronics, CHRIST (Deemed to be University), Bangalore Central Campus, Bengaluru, 560029, Karnataka, India
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17
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Al‐Buriahi MS, Eke C, Alomairy S, Yildirim A, Alsaeedy HI, Sriwunkum C. Radiation attenuation properties of some commercial polymers for advanced shielding applications at low energies. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5267] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
| | - Canel Eke
- Department of Mathematics and Science Education, Faculty of Education Akdeniz University Antalya Turkey
| | - Sultan Alomairy
- Department of Physics College of Science, Taif University Taif Saudi Arabia
| | | | - H. I. Alsaeedy
- Department of Physics, Faculty of Science King Khalid University Abha Saudi Arabia
| | - Chahkrit Sriwunkum
- Department of Physics Ubon Ratchathani University Ubon Ratchathani Thailand
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18
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Prabhu S, S. G. B, Gudennavar SB. Sodium alginate/bismuth (
III
) oxide composites for γ‐ray shielding applications. J Appl Polym Sci 2020. [DOI: 10.1002/app.50369] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Srilakshmi Prabhu
- Department of Physics and Electronics CHRIST (Deemed to be University), Bangalore Central Campus Bengaluru India
| | - Bubbly S. G.
- Department of Physics and Electronics CHRIST (Deemed to be University), Bangalore Central Campus Bengaluru India
| | - Shivappa B. Gudennavar
- Department of Physics and Electronics CHRIST (Deemed to be University), Bangalore Central Campus Bengaluru India
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19
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Usta M, Tozar A. The effect of the ceramic amount on the radiation shielding properties of metal-matrix composite coatings. Radiat Phys Chem Oxf Engl 1993 2020. [DOI: 10.1016/j.radphyschem.2020.109086] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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20
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Aygün B, Şakar E, Singh V, Sayyed M, Korkut T, Karabulut A. Experimental and Monte Carlo simulation study on potential new composite materials to moderate neutron-gamma radiation. PROGRESS IN NUCLEAR ENERGY 2020. [DOI: 10.1016/j.pnucene.2020.103538] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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21
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Aygün B, Şakar E, Karabulut A, Alım B, Sayyed MI, Singh VP, Yorgun NY, Özpolat ÖF. Development of SiO2 based doped with LiF, Cr2O3, CoO4 and B2O3 glasses for gamma and fast neutron shielding. RADIOCHIM ACTA 2020. [DOI: 10.1515/ract-2020-0067] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In this study, the fast neutron and gamma-ray absorption capacities of the new glasses have been investigated, which are obtained by doping CoO,CdWO4,Bi2O3, Cr2O3, ZnO, LiF,B2O3 and PbO compounds to SiO2 based glasses. GEANT4 and FLUKA Monte Carlo simulation codes have been used in the planning of the samples. The glasses were produced using a well-known melt-quenching technique. The effective neutron removal cross-sections, mean free paths, half-value layer, and transmission numbers of the fabricated glasses have been calculated through both GEANT4 and FLUKA Monte Carlo simulation codes. Experimental neutron absorbed dose measurements have been carried out. It was found that GS4 glass has the best neutron protection capacity among the produced glasses. In addition to neutron shielding properties, the gamma-ray attenuation capacities, were calculated using newly developed Phy-X/PSD software. The gamma-ray shielding properties of GS1 and GS2 are found to be equivalent to Pb-based glass.
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Affiliation(s)
- Bünyamin Aygün
- Department of Electronics and Automation , Vocational School, Agi Ibrahim Cecen University , Agri , Turkey
| | - Erdem Şakar
- Department of Physics , Faculty of Science, Atatürk University , 25040 Erzurum , Turkey
| | - Abdulhalik Karabulut
- Department of Physics , Faculty of Science, Atatürk University , 25040 Erzurum , Turkey
- Agri Ibrahim Cecen University , Ağrı , Turkey
| | - Bünyamin Alım
- Department of Electricity and Energy , Technical Scientific Vocational School, Bayburt University , Bayburt , Turkey
| | - Mohammed I. Sayyed
- Department of Physics , Faculty of Science, Isra University , Amman , Jordan
- Department of Nuclear Medicine Research , Institute for Research and Medical Consultations, Imam Abdulrahman bin Faisal University , Damman , Saudi Arabia
| | | | - Nergiz Yıldız Yorgun
- Department of Physics , Faculty of Science, Van Yüzüncü Yıl University , Van , Turkey
| | - Özgür Fırat Özpolat
- Computer Sciences Research and Application Center, Atatürk University , 25240 Erzurum , Turkey
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Nikeghbal K, Zamanian Z, Shahidi S, Spagnuolo G, Soltani P. Designing and Fabricating Nano-structured and Micro-structured Radiation Shields for Protection against CBCT Exposure. MATERIALS 2020; 13:ma13194371. [PMID: 33008078 PMCID: PMC7579218 DOI: 10.3390/ma13194371] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 09/21/2020] [Accepted: 09/28/2020] [Indexed: 12/14/2022]
Abstract
Researchers have always been interested in finding new and effective materials for protection against radiation. This experimental study aimed to design and fabricate new types of nano-material and micro-material based shields against the ionizing effect of cone beam computed tomography (CBCT) X-rays. To fabricate a flexible prototype, we added dioctyl phthalate (DOP) oil to emulsion polyvinyl chloride (PVC) powder. The paste was mixed and dispersed. Then, nano- and micro-powders of WO3 and Bi2O3 were added to the paste, with the weight ratio of 20% PVC, 20% DOP, and 60% nano- and micro-metals. Using an ultrasonic mixer, the polymer matrix and metals were mixed and a paste with a thick texture was developed. The resultant paste was poured into glass molds and the molds were then heated in an oven. After cooling, the resultant sheets were selected for further experiments. A CBCT unit and dosimeter were used to evaluate the characterization and X-ray shielding properties of the fabricated prototypes. The half-value layers (HVL) for nano-WO3, micro-WO3, nano-Bi2O3, and micro-Bi2O3 were 0.0390, 0.0524, 0.0351, and 0.0374 cm, respectively. In addition, the linear attenuation coefficient (µ) for these materials were 17.77, 13.20, 19.71, and 18.5 cm−1, respectively. The findings indicate that nano-structured samples are more effective in the attenuation of X-ray energy. The nano-structured WO3 prototype was nearly 34% more efficient in attenuating radiation compared to the micro-structured WO3 prototype. This difference in nano- and micro-structured Bi2O3 prototypes was 6.5%.
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Affiliation(s)
- Kiana Nikeghbal
- Department of Oral and Maxillofacial Radiology, School of Dentistry, Shiraz University of Medical Sciences, Shiraz 71937, Iran;
- Department of Oral and Maxillofacial Radiology, School of Dentistry, Shahrekord University of Medical Sciences, Shahrekord 88168, Iran
| | - Zahra Zamanian
- Department of Occupational Health Engineering, School of Health, Shiraz University of Medical Sciences, Shiraz 71937, Iran
- Correspondence: (Z.Z.); (G.S.)
| | - Shoaleh Shahidi
- Biomaterial Research Center, Department of Oral and Maxillofacial Radiology, School of Dentistry, Shiraz University of Medical Sciences, Shiraz 71937, Iran;
| | - Gianrico Spagnuolo
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples “Federico II”, 80125 Naples, Italy
- Correspondence: (Z.Z.); (G.S.)
| | - Parisa Soltani
- Department of Oral and Maxillofacial Radiology, Dental Implants Research Center, Dental Research Institute, School of Dentistry, Isfahan University of Medical Sciences, Isfahan 81746, Iran;
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23
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Hamad M, Mhareb M, Alajerami Y, Sayyed M, Saleh G, Maswadeh Y, Ziq K. Radiation shielding properties of Nd0.6Sr0.4Mn1−yNiyO3 substitute with different concentrations of nickle. Radiat Phys Chem Oxf Engl 1993 2020. [DOI: 10.1016/j.radphyschem.2020.108920] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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24
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Determination of photon-shielding features and build-up factors of nickel–silver alloys. Radiat Phys Chem Oxf Engl 1993 2020. [DOI: 10.1016/j.radphyschem.2020.108778] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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25
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Mirji R, Lobo B. Study of polycarbonate–bismuth nitrate composite for shielding against gamma radiation. J Radioanal Nucl Chem 2020. [DOI: 10.1007/s10967-020-07038-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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