Preparation of Bioactive Glass Ceramic by using Sol – gel method

Abstract

Bioactive glass ceramic with quaternary system of $\text{SiO}_2\text{-CaO-Na}_2\text{O-P}_2\text{O}_5$ composition" was prepared by "sol-gel method using" aquatic "sodium metasilicate" ($\text{Na}_2\text{SiO}_3 \cdot 5\text{H}_2\text{O}$) as a silica "source". "Monolith was gotten after sintering temperature at $900^\circ\text{C}$, for 1 hour, as on the resulting gel was aged at room temperature for 5 days, dried at $60^\circ\text{C}$ for 72 hours to give the monolith phase. The monolith was further heat treated as follows ; $200^\circ\text{C}$ (40 hours) to evaporating water and ethanol from the monolith , $600^\circ\text{C}$ (5 hours) to preamble monolith to access the begging formation of glass ceramic, $800^\circ\text{C}$ (3 hours) to complete the phase of glass ceramic and $900^\circ\text{C}$ (1 hour)the sintering degree to obtain the final phase of glass ceramic ( $\text{Na}_2\text{Ca}_2\text{Si}_3\text{O}_9$ ) .The X-ray diffraction analysis presented the occurrence of the combeite ($\text{Na}_2\text{Ca}_2\text{Si}_3\text{O}_9$) as a crystalline phase". Fourier "Transformation" InfraRed (FTIR) spectroscopy facilitated a confirmation of the hydroxyapatite (HA) "foundation.

 

The topography of the surface and grain size measurement was obtained using Atomic Force Microscope (AFM). In the present study, the "large number of a benefits such as low dispensation temperature, the higher cleanliness and similarity were obtained, therefore, the better controller of a bioactivity process". Thus," the obtained monolith solid could be the good candidate in tissue engineering scaffolds applications".