Sol-gel bioactive glass-ceramics Part II: Glass-ceramics in the CaO-SiO2-P2O5-MgO system
| Autor: | Irena Michailova, Vladimir Hristov, Lachezar Radev, Bisserka Samuneva |
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| Rok vydání: | 2009 |
| Předmět: |
in vitro bioactivity
Simulated body fluid Mineralogy General Chemistry Thermal treatment engineering.material law.invention Chemistry Åkermanite chemistry.chemical_compound chemistry law visual_art Bioactive glass bioceramics Materials Chemistry engineering visual_art.visual_art_medium sol-gel Carbonate Ceramic Fourier transform infrared spectroscopy QD1-999 Sol-gel Nuclear chemistry |
| Zdroj: | Open Chemistry, Vol 7, Iss 3, Pp 322-327 (2009) |
| ISSN: | 2391-5420 |
| DOI: | 10.2478/s11532-009-0014-2 |
| Popis: | Ceramics, with basic composition based on the CaO-SiO2-P2O5-MgO system with different Ca+ Mg/P+Si molar ratio (R), were prepared via polystep sol-gel technique. The structure of the obtained ceramic materials has been studied by XRD, FTIR spectroscopy, and SEM. X-ray diffraction showed the presence of akermanite and HA for the sample with R = 1.68 and Mg substituted β-TCP and silicocarnotite for the sample with R = 2.16, after thermal treatment at 1200°C/2 h. The obtained results are in good agreement with FTIR. In vitro test for bioactivity in static condition proved that the carbonate containing hydroxyapatite (CO3HA) can be formed on the surface of the synthesized samples. CO3HA consisted of both A- and B-type CO 32− ions. SEM micrographs depicted different forms of HA particles, precipitated on the surface after soaking in 1.5 simulated body fluid (SBF). |
| Databáze: | OpenAIRE |
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