MECHANOCHEMICAL PROPERTIES OF OCTACALCIUM PHOSPHATE AND BRUSHITE

Autor:	Yoshihiro Hara, Hideki Monma, Toshinori Okura, Yusuke Moriyoshi
Rok vydání:	2009
Předmět:	chemistry.chemical_compound Thermogravimetric analysis Materials science Chemical engineering chemistry biology Platy Mineralogy Brushite Octacalcium phosphate biology.organism_classification Grinding
Zdroj:	Phosphorus Research Bulletin. 23:10-14
ISSN:	1882-2363 0918-4783
Popis:	Crystalline layer-structured octacalcium phosphate (Ca8(HPO4)2(PO4)4 5H2O, OCP) and brushite (CaHPO4 2H2O, DCPD) were mechanochemically ground. The crystalline XRD pattern of OCP was weakened with grinding and reached almost amorphously after 72 h. However, the amorphously ground OCP possessed IR spectroscopic and thermogravimetric characteristics of OCP. On the other hand, DCPD was dehydrated to monetite (CaHPO4) by grinding above 4 h. As-prepared OCP particles consisting of aggregates of fine primary thin blade crystals changed to amorphous-like sub-micron spherical particles by grinding. DCPD platy crystals changed to aggregates of very fine primary particles.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5429c0e16912831a3a501462d4fc31f7 https://doi.org/10.3363/prb.23.10 Zobrazit plný text záznamu