PHASE TRANSFORMATION OF CASO4 GRANULES TO CACO3 GRANULES BY DISSOLUTION–PRECIPITATION REACTION WITH 12 HOURS IMMERSION TIME

Abstract

Background: Synthetic bone graft is a material that resembles human bone phase and is developed due to clinical demand. Calcium carbonte (CaCO₃/Calcite) has been used as bone substitution one of the methods to fabricate calcite is phase transformation by dissolution–precipitation reaction.  Previous study did the same method but with lower temperature (<100ºC). Calcium sulfate anhydrate (CaSO₄) granules used as precursor is immersed in 0.5 mol/L sodium carbonate (Na₂CO₃) solution at 100ºC for 12 h.  Objective: This study aims to fabricate CaCO₃ granules from CaSO₄ granules when the temperature is higher than the previous study. Methods: Fabricate CaCO₃ granules using CaSO₄ granules as precursor by dissolution-precipitation reaction in Na₂CO₃ solution with 12 h immersion time with 100ºC temperature. Powder X-ray diffraction patterns and Fourier transform infrared spectra study will be performed to characterize the granules. Results:  CaCO₃ granules are fabricated by dissolution-precipitation reaction in Na₂CO₃ solution with 12 h immersion time when the temperature was 100ºC. Conclusion: CaSO₄ granules used as precursor are a potential material to fabricate CaCO₃ by using dissolution-precipitation reaction with 12 hours immersion time and 100ºC temperature.