Characterization of melt-derived 45S5 and sol-gel-derived 58S bioactive glasses
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Journal of Biomedical Materials Research, B
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The ability of bioactive glasses to form a bond to living bone and also to stimulate
bone-cell proliferation depends on the chemical composition and on the surface texture of the
glasses. In this work, the differences in physical properties between the melt-derived 45S5 and
sol-gel–derived 58S Bioglasst powders of various particle-size ranges were studied. The
powders were characterized for particle-size distribution by laser spectrometry, for specific
surface area and porosity by nitrogen sorption analysis, and for morphological features by
scanning electron microscopy. Melt-derived 45S5 powders exhibited a low-porosity texture
with surface area in the range 0.15–2.7 m2
/g. In contrast, the sol-gel–derived powders
exhibited a highly mesoporous texture, with surface area in the range of 126.5–164.7 m2
/g and
a large fraction of 6–9 nm pore sizes. These differences in texture, as well as variations in
chemical composition, account for significant changes in the resorption and in vivo responses.
Como referenciar
SEPULVEDA, PILAR; JONES, JULIAN R.; HENCH, LARRY L. Characterization of melt-derived 45S5 and sol-gel-derived 58S bioactive glasses. Journal of Biomedical Materials Research, B, v. 58, n. 6, p. 734-740, 2001. Disponível em: http://repositorio.ipen.br/handle/123456789/7926. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.