Title Controllable synthesis of tricalcium phosphate (TCP) polymorphs by wet precipitation: Effect of washing procedure /
Authors Sinušaitė, Lauryna ; Grigoravičiūtė-Puronienė, Inga ; Popov, Anton ; Ishikawa, Kunio ; Kareiva, Aivaras ; Žarkov, Aleksej
DOI 10.1016/j.ceramint.2019.03.174
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Is Part of Ceramics International.. Oxford : Elsevier Science. 2019, vol. 45, iss. 9, p. 12423-12428.. ISSN 0272-8842. eISSN 1873-3956
Keywords [eng] Tricalcium phosphate ; TCP ; Processing conditions ; Polymorphs ; Washing procedure
Abstract [eng] In the present work, effect of processing conditions on the synthesis of tricalcium phosphate (TCP) polymorphs was investigated. Pure α- and β-TCP polymorphs were prepared by wet precipitation method at almost identical thermal conditions. It was shown that formation of the compound with desired crystalline structure can be achieved by applying a washing procedure with a certain solvent to as-prepared calcium phosphate precipitates. Effect of water, acetone, acetonitrile, ethanol and isopropanol on the crystallinity and crystal structure of the asprepared and annealed powders was studied. It was demonstrated that type of the washing liquid strongly affects crystalline or amorphous nature of the as-prepared precipitates and formation of different TCP polymorphs after thermal treatment. Washing of the as-prepared precipitates with water and acetone leads to the formation of β- TCP, while washing with acetonitrile and alcohols leads to the crystallization of α-TCP. The thermal behavior of dried precipitates was investigated by thermogravimetric analysis (TGA). The crystallinity, crystal structure and structural changes were evaluated by X-ray powder diffraction (XRD), Fourier-transform infrared (FTIR) and Raman spectroscopy. Scanning electron microscopy (SEM) was used for the characterization of morphological features of the synthesized products.
Published Oxford : Elsevier Science
Type Journal article
Language English
Publication date 2019