Abstract
Among multiple phases obtained while synthesizing bioactive glass, the phosphate-rich Silicorhenanite phase is achieved only at high temperatures. The novel outcome of this work is that sol-gel routed 45S5 bioactive glass was synthesized successfully by permutating the period of ageing and achieved the Silicorhenanite phase at 700 °C without compromising biocompatibility. The process of ‘Ostwald ripening’ was observed among the biomaterials where A24 and A72 exhibited a similar trend and A48 and A96 behaved alike. Rietveld Refinement confirms the elevation of the Silicorhenanite (β-Na2Ca4(PO4)2SiO4) phase upon increasing the ageing time over the Combeite (Na2Ca2Si3O9) phase. Since A72 exhibits compressive strain and smaller crystallite size, it lacks erythrocyte compatibility, and protein adsorption, and has an exceptionally low surface area. This study emphasizes the stability and multiple physio-chemical properties of 45S5 Bioactive glass during the ageing period, which is an imperious parameter for producing biomedically beneficial glass products, especially porous scaffolds and implant coatings.
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