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J. Korean Ceram. Soc. > Volume 59(1); 2022 > Article
Journal of the Korean Ceramic Society 2022;59(1): 76-85.
doi: https://doi.org/10.1007/s43207-021-00163-z
Sol–gel synthesis of soda lime silica‑based bioceramics using biomass as renewable sources
Srinath Palakurthy, P. Abdul Azeem, K. Venugopal Reddy
Department of Physics, National Institute of Technology Warangal, Warangal 506004, India
Correspondence  P. Abdul Azeem ,Email: drazeem2002@yahoo.com
Received: July 16, 2021; Revised: October 2, 2021   Accepted: October 27, 2021.  Published online: January 31, 2022.
ABSTRACT
The purpose of the work is to prepare and assess soda lime silica-based ( ­SiO2–CaO–Na2O) bioactive ceramics using biomass as renewable sources. Thus we produced SiO2–CaO–Na2O-based bioactive ceramics by sol–gel process using rice husk and eggshells as sources of silica and calcium oxide, respectively. The precursors such as calcinated eggshell powder, rice husk ash (RHA) and sodium hydroxide (NaOH) were processed by sol–gel method, resultant in ­SiO2–CaO–Na2O-based bioactive ceramics. The gel-derived sintered sample showed combeite high (Na6Ca3Si6O18) as a major crystalline phase. Subsequently, the sintered specimens were analyzed from the physical and structural point of view, and in terms of apatite mineralization rate in simulated environments and cytocompatibility in relative to human osteoblast-like cells. The studies showed that the produced crystalline ­ ­SiO2–CaO–Na2O-based ceramics showed an average porosity of 45%. In vitro evaluation of the biological properties revealed that the prepared ceramics possesses the mineralization of carbonated hydroxyapatite (CHA) in simulated environment with good cytocompatibility and controlled degradation rate. Therefore, the results obtained suggest that the prepared ­SiO2–CaO–Na2O-based bioactive ceramics using biomass as renewable sources might be a low cost ceramics for applications in biomedical field.
Key words: Bioceramics · Renewable sources · Bioactivity · Cytocompatibility · Biomedical application
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