Investigation of the Effect of Acetone and DMF as Solvent on the Synthesis P2O5-CaO-Na2O-TiO2 Glass Powder by Sol-Gel Method

The sol-gel synthesis method allows greater control over glass morphology at a relatively low processing temperature (200 °C) in comparison with phosphate-based melt-derived glasses. In the present study, phosphate-based glasses with the general formula of (P2O5)55–(CaO)25–(Na2O)10–(TiO2)10, has been synthesized via a novel and facile sol-gel method for use in biomedical applications. For this purpose, dimethylformamide and acetone have been used as the solvent. The glass powders that obtained from dried gel has been analyzed using several characterization techniques, including X-Ray Diffraction, Fourier Transform Infrared spectroscopy, Simultaneous Thermal Analysis, Brunauer-Emmett-Teller surface area and porosity analyzer and Scanning Electron Microscopy. The X-Ray Diffraction results confirmed the amorphous and glassy nature of the prepared samples. The Fourier Transform Infrared spectroscopy results revealed that by addition of TiO2, titanium oxide (TiO6) entered the network which likely acts as a modifier oxide. It has been observed that crystallization temperature (Tc) for the sample that synthesized by dimethylformamide (DMF) (~646 °C) is more than the sample that synthesized by acetone (~500 °C). Furthermore, to examine the bioactive capacity of glasses, the samples were soaked in simulated body fluid (SBF) for 7 days. The analyses have shown the formation of hydroxyapatite on the glass powders after 7 days of immersion in SBF solution