Sintered Hydroxyapatite / Bioactive Glass Composites: Thermal Analysis and Bioactivity

Abstract:

Three-dimensionally ordered materials containing hydroxyapatite (HAp) as well as Bioglass® (BG) have been prepared in form of pellets and have been examined the effects of BG addition -in combination with a heat treatment process- on biological properties of composite HAp/BG. The investigation of the bioactive behavior of sintered and unheated biphasic mixtures and the deviations from pure HAp was performed by FTIR spectroscopy and Differential Thermal Analysis. It was observed the appearance of new phases on sintered composite pellets, while a faster biological HAp layer formation was detected, on the composite unheated pellets’ surface than on pure HAp and sintered composite pellets, currently leading to increased bioactivity.

• Periodical: Key Engineering Materials (Volumes 309-311)
• Pages: 167-170
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.309-311.167
• Online since: May 2006
• Authors: Xanthippi Chatzistavrou, K. Chrissafis, Eleana Kontonasaki, T. Zorba, Petros Koidis, Konstantinos M. Paraskevopoulos
• Keywords: Bioactive Glass, Bioactivity, FT-IR, Hydroxyapatite (HAP), Simulated Body Fluid (SBF), Sintering, TG-DTA

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