A thorough examination of gadolinium (III)-containing silicate bioactive glasses: synthesis, physical, mechanical, elastic and radiation attenuation properties

Deliormanlı, Aylin M.; Ensoylu, Mertcan; Issa, Shams A.M.; Rammah, Y.S.; ALMisned, Ghada; Tekın, H.O.

doi:10.1007/s00339-022-05408-0

Cited by 12 publications

(1 citation statement)

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“…Further investigation may be necessary to determine if the chemical compositions added to bioactive glass enhance or subtract from these features. Apart from biocompatibility, recent studies (Deliormanlı et al, 2021a;Al-Harbi et al, 2021;Deliormanlı et al, 2022) have primarily focused on the ionizing radiation absorption capabilities of bioactive glasses as a function of bioactive context. In the aforementioned application areas, these glasses may be subjected to external therapeutic or diagnostic radiation.…”

Section: Introductionmentioning

confidence: 99%

Graphene-bioactive glass composites: Structural, Vickers hardness, and gamma-ray attenuation characteristics

et al. 2023

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Introduction: Graphene-based materials have gained increasing attention for use in radiation attenuation applications. In this study, pristine graphene nanoplatelet-containing (1, 3, 5, and 10 wt%) borate-based bioactive glass composites were prepared.Methods: Structural properties, Vickers microhardness, and gamma-ray radiation shielding properties of the fabricated composites were examined in detail.Results and Discussion: Results revealed that the inclusion of the graphene in the glass matrix led to a decrease in the bulk density of the glass-based composites from 2.41 to 2.31 g/cm3. Similarly, a decrease in Vickers hardness was obtained as the graphene concentration was increased due to a convoluted effect of the non-uniform distribution of graphene nanoplatelets in the bioactive glass matrix and the higher residual porosity. Vickers hardness of the bare and the 10 wt% graphene-containing bioactive glass discs were measured to be 5.03 ± 0.28 GPa and 1.87 ± 0.56 GPa, respectively. On the other hand, the incorporation of graphene starting from 3 wt% decreased the crack propagation after indentation which may be attributed to an increase in fracture toughness. In the study, fundamental gamma ray absorption properties of graphene-containing bioactive glasses were examined in the 0.015–15 MeV incident photon energy range. For this purpose, the Py-MLBUF code was employed to determine gamma ray absorption parameters. Results showed that linear attenuation coefficients of the glass-based composites decreased due to a decrease in the density of the samples. On the other hand, as graphene was incorporated into the bioactive glass structure, exposure buildup factor and energy absorption buildup factor values increased. The growing graphene ratio in the glass structure contributed negatively to the photon’s tendency to interact with the material.

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Section: Introductionmentioning

confidence: 99%