Collection of scientific works Nanosystems, nanomaterials, nanotechnologies Year 2024 Volume 22, Issue 1
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REHAB SHATHER ABDUL HAMZA and MAJEED ALI HABEEB

Synthesis, Characterization and Application of PVA–CMC/SiO2–Cr2O3 Nanostructures
107–118 (2024)

PACS numbers: 68.37.Hk, 68.55.J-, 81.07.Pr, 81.70.Fy, 82.35.Np

This study investigates the synthesis of new nanocomposites (NCs) comprising polyvinyl alcohol (PVA) and carboxymethyl cellulose (CMC) with silicon dioxide (SiO2) and chromium trioxide (Cr2O3) for the use in gamma-rays’-shielding applications. The nanocomposites exhibit desirable properties such as low weight, elasticity, high attenuation coefficients, and cost-effectiveness for gamma-rays’ shielding. The structural properties of PVA–CMC–SiO2–Cr2O3 nanocomposites are studied. The scanning electron microscopy reveals that the top surface of the PVA–CMC/SiO2–Cr2O3 NCs films exhibits uniform and cohesive aggregates or fragments distributed randomly, when the weight percentage reaches 8%. The uniform distribution of nanoparticles (NPs) in the blend is evidenced by the optical microscope images and leads to a continuous network within the polymer matrix. The study results regarding the utilization of gamma-rays’ shielding demonstrate that the nanocomposites composed of PVA–CMC/SiO2–Cr2O3 display significant attenuation coefficients for gamma rays

KEY WORDS: nanocomposites, SiO2–Cr2O3 nanoparticles, polyvinyl alcohol, carboxymethyl cellulose, structural properties, gamma-rays’ shielding

DOI:  https://doi.org/10.15407/nnn.22.01.107

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