A Greener Path by Hydrothermally Processing Apatite

6th Central and Eastern European Conference on Thermal Analysis and Calorimetry (CEEC-TAC6) and 15th Mediterranean Conference on Calorimetry and Thermal Analysis (Medicta2021) 2021
Aiga Anna Jokša, Kārlis-Agris Gross, Benoit Marie Etienne You, Arthur Tam Louis Vinh, Kaia Tonsuaadu

In this paper, a greener, “no waste” phase formation strategy for producing apatite was proposed. Initial amorphous powders - calcium carbonate and tricalcium phosphate powders - were synthesized using the wet precipitation method and freeze-dried. Characterization was done by XRD and FTIR. Both powders were thermally crystallized in air by heating at a phase transition temperature determined by DTA. Dry powders were mixed and ground in a mortar. The mixed powder was uniaxially pressed to obtain green body pellets. The green body pellet was then put into a hydrothermal vessel. After the hydrothermal process pellets were dried and structurally characterized by XRD and FTIR to determine if apatite was formed. The bulk density of green body pellets and hydrothermally processed ones were calculated.

Keywords
apatite, calcium carbonate, tricalcium phosphate, hydrothermal process, densification

Pudule, A., Gross, K., You, B., Vinh, A., Tonsuaadu, K. A Greener Path by Hydrothermally Processing Apatite. In: 6th Central and Eastern European Conference on Thermal Analysis and Calorimetry (CEEC-TAC6) and 15th Mediterranean Conference on Calorimetry and Thermal Analysis (Medicta2021), Croatia, Split, 20-24 July, 2021. Romania: Sitech Publishing House, 2021, pp.205-205.

Publication language
English (en)