Water Based Sol-Gel Synthesis of Hydroxyapatite
Keywords:
bioceramics, hydroxyapatite, calcium nitrate, diethyl phosphite, trimethyl phosphate, sol-gel synthesis.Abstract
The hydroxyapatite (HA) bioceramic was synthesized using a sol-gel processing route of calcium nitrate with trimethyl phosphate and diethyl phosphite. The formation of hydroxyapatite and other compounds during the heat-treatment cycle were identified and characterized using 1H NMR, FTIR, X-ray diffraction spectroscopy. Aging effect on the phase evolution of water-based sol-gel process to synthesize hydroxyapatite was studied in terms of aging time and using different phosphorus precursors. The use of diethyl phosphite has improved the sol-gel procedure by eliminating the aging period that was required for trimethyl phosphate.
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