Optimal radiation shielding capacity and thermal properties of poly(methyl methacrylate) films enhanced with different metal complexes
Samples of pure poly(methyl methacrylate) (PMMA) and PMMA enhanced with metal complexes of Zn, Cd, and Hg were synthesized via catalytic chain transfer polymerization. Structural analysis, by means of XRD, showed the amorphous nature of the studied samples which meant high homogenous dissolution of...
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| Veröffentlicht in: | Polymers & polymer composites 2021-11, Vol.29 (9_suppl), p.S223-S228 |
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| container_issue | 9_suppl |
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| container_title | Polymers & polymer composites |
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| creator | Saudi, Heba A Gomaa, Hossam M El-Mosallamy, El-Said H Elkatlawy, Saeid M |
| description | Samples of pure poly(methyl methacrylate) (PMMA) and PMMA enhanced with metal complexes of Zn, Cd, and Hg were synthesized via catalytic chain transfer polymerization. Structural analysis, by means of XRD, showed the amorphous nature of the studied samples which meant high homogenous dissolution of the metals (Zn, Cd and Hg) into the polymer matrix. Density values increased linearly with respect to atomic radius of the incorporated metals. Addition of such elements causes an increase in mass attenuation coefficients and a remarkable decrease in the Half Value Layer (HVL) values, in comparison to existing standard shielding materials. Thermal studies by DSC indicated highly homogenous internal structure of the studied samples, with slight decrease in the Tg value when introducing metals due to heterogeneous nucleation agent role of the Cd, Zn and Hg. All observations and results suggest the studied materials to be used as promising and proper aprons for medical radiation shielding applications. |
| doi_str_mv | 10.1177/0967391121998490 |
| format | Article |
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Structural analysis, by means of XRD, showed the amorphous nature of the studied samples which meant high homogenous dissolution of the metals (Zn, Cd and Hg) into the polymer matrix. Density values increased linearly with respect to atomic radius of the incorporated metals. Addition of such elements causes an increase in mass attenuation coefficients and a remarkable decrease in the Half Value Layer (HVL) values, in comparison to existing standard shielding materials. Thermal studies by DSC indicated highly homogenous internal structure of the studied samples, with slight decrease in the Tg value when introducing metals due to heterogeneous nucleation agent role of the Cd, Zn and Hg. 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Structural analysis, by means of XRD, showed the amorphous nature of the studied samples which meant high homogenous dissolution of the metals (Zn, Cd and Hg) into the polymer matrix. Density values increased linearly with respect to atomic radius of the incorporated metals. Addition of such elements causes an increase in mass attenuation coefficients and a remarkable decrease in the Half Value Layer (HVL) values, in comparison to existing standard shielding materials. Thermal studies by DSC indicated highly homogenous internal structure of the studied samples, with slight decrease in the Tg value when introducing metals due to heterogeneous nucleation agent role of the Cd, Zn and Hg. 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| source | Sage Journals GOLD Open Access 2024 |
| subjects | Atomic radius Attenuation coefficients Cadmium Chain transfer Chemical synthesis Coordination compounds Crystallization Gamma rays Mechanical properties Mercury (metal) Metals Molecular weight Nucleation Polymerization Polymers Polymethyl methacrylate Radiation Radiation shielding Structural analysis Temperature Thermodynamic properties |
| title | Optimal radiation shielding capacity and thermal properties of poly(methyl methacrylate) films enhanced with different metal complexes |
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