Synthesis of Chicken’s Eggshells-Based β-Tricalcium Phosphate Bioceramics

Abstract:

The use of bioceramics for orthopedic and dental application nowadays increases due to their good biocompatibility and osteoconductivity. β-tricalcium phosphate (β-TCP) bioceramics which have excellent biodegradation properties have been in use quite extensively. This paper reports the synthesis of β-TCP bioceramics from precipitation of calcined chicken’s eggshells and phosphoric acid (H₃PO₄). Chicken’s eggshells were calcined at 1000°C for 5 hours to form calcium oxide (CaO). Various molarities of CaO and H₃PO₄, between 0.4 M and 2.4 M, were used in this experiment with the Ca:P ratio was kept 1.5:1. After precipitation, the samples were filtered and heated at a sintering temperature of 1000°C for 7 hours. The X Ray Diffraction profile showed that the patterns were affected by the molarity. The patterns of 1.2 M CaO/0.8 M H₃PO₄ samples showed pure β-TCP, while those of 0.6 M CaO/0.4 M H₃PO₄ and 2.4 M CaO/1.6 M H₃PO₄ samples showed the presence of hydroxyapatite and octa calcium phosphate. These findings were also supported by Fourier transform infrared spectra. The purity of the samples shown by the atomic absorption spectroscopy resulted in Ca:P ratio of 1.48:1 which is very closed to that of standard β-TCP bioceramics.

• Periodical: Advanced Materials Research (Volume 1112)
• Pages: 458-461
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1112.458
• Online since: July 2015
• Authors: Kiagus Dahlan, Nur Aisyah Nuzulia
• Keywords: Bioceramics, Chicken’s Eggshells, Precipitation, Sintering, Tricalcium Phosphate

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