A method for simultaneously precipitating and dispersing nano-sized calcium phosphate suspensions

authors	Lemos, AF; Rebelo, AHS; Rocha, JHG; Ferreira, JMF
editors	Li, P; Zhang, K; Colwell, CW
nationality	International
journal	BIOCERAMICS, VOL 17
author keywords	calcium phosphates; colloidal processing; precipitation; rheology
keywords	HYDROXYAPATITE; CERAMICS
abstract	Stable and relatively concentrated aqueous suspensions of nano-sized stoichiometric hydroxyapatite could be prepared by a precipitation method in the presence of suitable surface active agent (SAA). The method includes the precipitation, vacuum filtration and washing of the precipitated powders, followed by re-dispersion. It could be concluded that the added amount of the SAA should be enough to cover the primary particles surface, and that washing should be better carried out using a SAA solution. The method developed enables the precipitation of the powders and the preparation of suspensions, while significantly shortening the overall time required for colloidal processing consuming.
publisher	TRANS TECH PUBLICATIONS LTD
issn	1013-9826
isbn	0-87849-961-X
year published	2005
volume	284-286
beginning page	67
ending page	70
web of science category	Materials Science, Ceramics; Materials Science, Biomaterials; Materials Science, Composites
subject category	Materials Science
unique article identifier	WOS:000228359500017