Controlling the Radiation Shielding and Fluorescence Features of Polyvinyl Alcohol/Polyvinyl Pyrrolidone/Polyethylene Glycol by Incorporation with Erbium Doped Cobalt Ferrite Nanofillers.
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| Title: | Controlling the Radiation Shielding and Fluorescence Features of Polyvinyl Alcohol/Polyvinyl Pyrrolidone/Polyethylene Glycol by Incorporation with Erbium Doped Cobalt Ferrite Nanofillers. |
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| Authors: | Heiba, Zein K.1 (AUTHOR), Badawi, Ali2 (AUTHOR) daraghmeh@tu.edu.sa, Ali, Essam E.2 (AUTHOR), Ibrahim, Rafat M.3 (AUTHOR), Mohamed, Mohamed Bakr1,3 (AUTHOR) |
| Source: | Journal of Macromolecular Science: Physics. 2025, Vol. 64 Issue 7, p763-784. 22p. |
| Subjects: | Mass attenuation coefficients, Attenuation coefficients, Energy levels (Quantum mechanics), Filler materials, Polymeric nanocomposites |
| Abstract: | Our research described in this paper investigated the potential of polyvinyl alcohol (PVA), polyvinyl pyrrolidone (PVP), and polyethylene glycol (PEG) as a matrix for blended polymer nanocomposites, given their unique characteristics including biodegradability, mechanical strength, and water solubility. The incorporation of nanofillers, such as CoFe2-xErxO4 nanoparticles, significantly improved the performance of these composites, especially in optical and radiation attenuation applications. Key advancements include enhanced gamma-ray and neutron shielding, achieved through the high mass attenuation coefficients of the ferrite-based fillers. This research focused on the synthesizing of PVA/PVP/PEG blended polymer composites with CoFe2-xErxO4 nanoparticles via a casting method, with a detailed analysis of their structural, optical, and radiation-shielding properties. The findings aim to contribute to the development of sustainable, high-performance materials for advanced technological applications. The structure and crystallite sizes of the fillers were examined using the X-ray diffraction technique. The impact of the fillers on the structures and morphologies of the blends were also studied. According to CIE 1931 chromaticity diagrams samples, under an excitation wavelength of 380 nm showed a range of blue-violet hues, whereas samples under an excitation wavelength of 434 nm showed a range of violet-cyan hues, depending on the concentration of Er in the fillers. An increase in linear attenuation coefficient (LAC) at all photon energy levels and in mass attenuation coefficient (MAC) at lower energy levels was observed when the host blend was doped with CoFe2-xErxO4. Inclusion of CoFe2-xErxO4 into the host blend decreased both the half value layers (HVL) and tenth value layers (TVL), with this reduction becoming increasingly significant as the concentration of Er in the ferrite fillers was increased. Importantly, the incorporation of CoFe2-xErxO4 positively influenced the mean free path (MFP). In the low photon energy spectrum, the effective nuclear number (Zeff) values for the doped blends rose with an increasing amount of Er present in the ferrite fillers. The Zeff values displayed minimal variation in the middle to higher photon energy ranges with changes in Er content in the filler materials. A higher concentration of Er in the co-ferrite samples was associated with increased fast neutron removal cross-section (FNRCS) values. The filler's Er content rose, while the exposure buildup factor (EBF), and energy absorption buildup factor (EABF) values changed slightly. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | Our research described in this paper investigated the potential of polyvinyl alcohol (PVA), polyvinyl pyrrolidone (PVP), and polyethylene glycol (PEG) as a matrix for blended polymer nanocomposites, given their unique characteristics including biodegradability, mechanical strength, and water solubility. The incorporation of nanofillers, such as CoFe2-xErxO4 nanoparticles, significantly improved the performance of these composites, especially in optical and radiation attenuation applications. Key advancements include enhanced gamma-ray and neutron shielding, achieved through the high mass attenuation coefficients of the ferrite-based fillers. This research focused on the synthesizing of PVA/PVP/PEG blended polymer composites with CoFe2-xErxO4 nanoparticles via a casting method, with a detailed analysis of their structural, optical, and radiation-shielding properties. The findings aim to contribute to the development of sustainable, high-performance materials for advanced technological applications. The structure and crystallite sizes of the fillers were examined using the X-ray diffraction technique. The impact of the fillers on the structures and morphologies of the blends were also studied. According to CIE 1931 chromaticity diagrams samples, under an excitation wavelength of 380 nm showed a range of blue-violet hues, whereas samples under an excitation wavelength of 434 nm showed a range of violet-cyan hues, depending on the concentration of Er in the fillers. An increase in linear attenuation coefficient (LAC) at all photon energy levels and in mass attenuation coefficient (MAC) at lower energy levels was observed when the host blend was doped with CoFe2-xErxO4. Inclusion of CoFe2-xErxO4 into the host blend decreased both the half value layers (HVL) and tenth value layers (TVL), with this reduction becoming increasingly significant as the concentration of Er in the ferrite fillers was increased. Importantly, the incorporation of CoFe2-xErxO4 positively influenced the mean free path (MFP). In the low photon energy spectrum, the effective nuclear number (Zeff) values for the doped blends rose with an increasing amount of Er present in the ferrite fillers. The Zeff values displayed minimal variation in the middle to higher photon energy ranges with changes in Er content in the filler materials. A higher concentration of Er in the co-ferrite samples was associated with increased fast neutron removal cross-section (FNRCS) values. The filler's Er content rose, while the exposure buildup factor (EBF), and energy absorption buildup factor (EABF) values changed slightly. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 00222348 |
| DOI: | 10.1080/00222348.2025.2470506 |
