Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Powder Mixture for the Production of Microporous Ceramics Based on Hydroxyapatite

Version 1 : Received: 31 January 2022 / Approved: 2 February 2022 / Online: 2 February 2022 (15:45:43 CET)

A peer-reviewed article of this Preprint also exists.

Safronova, T.; Chichulin, S.; Shatalova, T.; Filippov, Y. Powder Mixture for the Production of Microporous Ceramics Based on Hydroxyapatite. Ceramics 2022, 5, 108-119. Safronova, T.; Chichulin, S.; Shatalova, T.; Filippov, Y. Powder Mixture for the Production of Microporous Ceramics Based on Hydroxyapatite. Ceramics 2022, 5, 108-119.

Journal reference: Ceramics 2022, 5, 10
DOI: 10.3390/ceramics5010010

Abstract

Powder mixture with given molar ratio Ca/P = 1.67 consisting of brushite (calcium hydrophosphate dihydrate) CaHPO4·2H2O, calcium oxalate monohydrate CaC2O4·H2O in form of whewellite and weddellite and some quantity of quasi-amorphous phase was obtained as a result of the interaction of hydroxyapatite powder Ca10(PO4)6(OH)2 with an aqueous solution of oxalic acid H2C2O4 at a molar ratio of Ca10(PO4)6(OH)2/H2C2O4 = 1:4 under mechanical activation conditions. This powder mixture was used to produce microporous monophase ceramics based on hydroxyapatite Ca10(PO4)6(OH)2 with aperient density of 1.25 g/cm3 after firing at 1200 oC. Microporosity of sintered ceramics was formed due to presence of particles with plate-like morphology, restraining shrinkage during sintering. Microporous ceramics based on hydroxyapatite Ca10(PO4)6(OH)2 with roughness of the surface as a consequence of the created microporosity can be recommended as a biocompatible material for the bone defects treatment and as a substrate for bone cell cultivation.

Keywords

hydroxyapatite; oxalic acid; powder, whewellite, weddellite, calcium oxalate monohydrate, brushite, calcium hydrophosphate dihydrate, heterophase reaction, ceramics, microporosity

Subject

MATERIALS SCIENCE, Biomaterials

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our diversity statement.

Leave a public comment
Send a private comment to the author(s)
Views 0
Downloads 0
Comments 0
Metrics 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.