Sol-gel synthesis of SiO2-CaO-Na2O-P2O5 Bioactive glass ceramic from Sodium metasilicate.
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Date
2013
Authors
Adams, L.A.
Essien, E.R.
Shaibu, R.O.
Oki, A.
Journal Title
Journal ISSN
Volume Title
Publisher
http://www.scirp.org/journal/njgc
Abstract
Bioactive glass ceramic with SiO2-Ca2O-Na2O-P2O5 composition was prepared by the sol-gel method using sodium
metasilicate (Na2SiO3) as silica source. The monolith obtained was sintered at 1000˚C for 2 hours after which X-ray
diffraction (XRD) analysis showed presence of combeite (Na2Ca2Si3O9) as the crystalline phase. In vitro bioactivity test
conducted on the material using simulated body fluid (SBF) showed the formation of carbonated hydroxyapatite on its
surface. The material during the SBF test was observed to transform from a mechanically strong crystalline phase
Na2Ca2Si3O9 to an amorphous phase after incubation for 14 days indicating that the material was biodegradable. Scanning electron microscopy (SEM) was used to investigate the surface morphology, while Fourier transform infrared
(FTIR) spectroscopy facilitated the confirmation of hydroxyapatite (HA) formation. The monolith material obtained
may be a good candidate for application in tissue engineering scaffolds.
Description
Staff Publications
Keywords
Research Subject Categories::NATURAL SCIENCES::Chemistry::Inorganic chemistry::Solid state chemistry , Bioactive glass ceramic , carbonated hydroxyapatite , Morphology , Spectroscopy , tissue engineering scaffolds
Citation
Adams, L. A., Essien, E. R., Shaibu, R. O., & Oki, A. (2013). Sol-gel synthesis of SiO2-CaO-Na2O-P2O5 bioactive glass ceramic from sodium metasilicate. New Journal of Glass and Ceramics, 3(1), 11.