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Experimental evaluation of PMMA-based composites reinforced with MgO:SiO2 nanoparticles for gamma radiation shielding application


Citation

Almutery, Aml Aied and Rahman, Wan Nordiana and Mohamed, Faizal and Hua, Chia Chin and Rashid, Raizulnasuha Ab (2026) Experimental evaluation of PMMA-based composites reinforced with MgO:SiO2 nanoparticles for gamma radiation shielding application. Radiation Physics and Chemistry, 247. art. no. 114023. pp. 1-10. ISSN 0969-806X; eISSN: 1879-0895

Abstract

PMMA-based nanocomposites reinforced with MgO:SiO2 nanoparticles (5, 10, 15, 20, 25 %) were fabricated via solution casting to evaluate their gamma-ray shielding performance. Densities increased from 2.73 ± 0.05 g/cm3 (pure PMMA) to 3.64 ± 0.06 g/cm3 (PMMA/25MgO:SiO2), while linear attenuation coefficients ranged from 1.05 ± 0.0082–1.278 ± 0.0039 cm−1 at 60 keV. The radiation protection efficiency improved from 7.09% for pure PMMA to 8.56% for PMMA/25MgO:SiO2. The shielding ability decreases with increasing photon energy. SEM results showed a more uniform distribution resulting from enhanced particle packing at high concentrations of nanoparticles (MgO:SiO2). Among all samples, PMMA/25MgO:SiO2 exhibited the highest attenuation and densification, making it the most effective sample for gamma radiation protection in lightweight polymeric shielding applications.


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Additional Metadata

Item Type: Article
Subject: Radiation
Divisions: Centre For Diagnostic Nuclear Imaging
DOI Number: https://doi.org/10.1016/j.radphyschem.2026.114023
Publisher: Elsevier Ltd
Keywords: Attenuation coefficient; Gamma radiation shielding; Mgo:sio2 nanoparticles; Pmma nanocomposite; Polymer density
Sustainable Development Goals (SDGs): SDG 3: Good Health and Well-being, SDG 9: Industry, Innovation and Infrastructure, SDG 12: Responsible Consumption and Production
Depositing User: Ms. Siti Radziah Mohamed@mahmod
Date Deposited: 30 Jul 2026 02:22
Last Modified: 30 Jul 2026 02:22
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.radphyschem.2026.114023
URI: http://psasir.upm.edu.my/id/eprint/125977
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