?-tricalcium phosphate synthesis from amorphous calcium phosphate: structural characterization and hydraulic reactivity

In the present study, amorphous tricalcium phosphate (TCP) has been synthetized by a wet route to obtain low temperature ?-TCP at 650 °C (LT-?TCP) and compare its structural, physical–chemical thermal properties with those of obtained conventional solid-state reaction method 1400 (HT-?TCP). Even if no significant differences were observed concerning values lattice parameters measured Rietveld refinement, LT-?TCP presented lower crystallinity higher crystal strains than HT-?TCP. The reactivity in water two different routes was assessed. Both raw samples appeared relatively inert solution did not favour nucleation calcium deficient apatite (CDA); HT-?TCP converted into only after milling. mechanical process leads decrease formation an phase, which is supported this work Raman spectroscopy. faster rate conversion milled compared can be assigned specific surface area, residual strain; these dissolution phase. Finally, setting ?-TCP-based bone cements regarding their synthesis route. Although does significantly affect times, kinetic CDA for Thus, modulation cement determined preparation grinding allows control overall reaction.