The study of the conditions for the coprecipitation of calcium hydroxylapatite, titanium hydroxide, and collagen with ammonia from aqueous solutions

Authors
Ezhova, ZA Orlovskii, VP Koval', EM
Citation
Za. Ezhova et al., The study of the conditions for the coprecipitation of calcium hydroxylapatite, titanium hydroxide, and collagen with ammonia from aqueous solutions, RUSS J IN C, 45(4), 2000, pp. 651-655
Citations number
12
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
RUSSIAN JOURNAL OF INORGANIC CHEMISTRY
ISSN journal
00360236 → ACNP
Volume
45
Issue
4
Year of publication
2000
Pages
651 - 655
Database
ISI
SICI code
0036-0236(200004)45:4<651:TSOTCF>2.0.ZU;2-M
Abstract
The interaction in the system CaCl2-TiCl4(HCl)-(NH4)(2)HPO4-NH3-H2O-collage n at 25 degrees C is studied by the solubility (Tanaev's residual concentra tions) method and pH measurements. The conditions for the coprecipitation o f calcium and titanium hydroxylapatites are found. Solid phases of calcium hydroxylapatite, titanium hydroxide, and collagen are obtained. The solid p hases and the products of their calcining at 950 degrees C are identified b y chemical and X-ray phase analyses and IR spectroscopy. Homogeneous phases containing mixtures of Ca-10(PO4)(6)(OH)(2) and TiO2 (rutile) are obtained .