Carbonated hydroxyapatite nanopowders for preparation of bioresorbable materials

Incorporation of carbonate ions to the crystal structure of carbonated hydroxyapatite (CHAp) leads to the formation of point defects (vacancies) in Ca‐ and OH‐sublattices as well as to microstrains revealed in CHAp nanocrystals. Various techniques, such as XRD, FTIR, TEM, FESEM/EDX, TG/DTA, AES (ICP...

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Bibliographic Details
Published in:Materialwissenschaft und Werkstofftechnik 2008-11, Vol.39 (11), p.822-829
Main Authors: Kovaleva, E. S., Shabanov, M. P., Putlayev, V. I., Filippov, Ya. Yu, Tretyakov, Y. D., Ivanov, V. K.
Format: Article
Language:English
Subjects:
Aliovalent doping
Carbonated hydroxyapatite
Microstrains
Point defects
Real structure
Resorption
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Summary:Incorporation of carbonate ions to the crystal structure of carbonated hydroxyapatite (CHAp) leads to the formation of point defects (vacancies) in Ca‐ and OH‐sublattices as well as to microstrains revealed in CHAp nanocrystals. Various techniques, such as XRD, FTIR, TEM, FESEM/EDX, TG/DTA, AES (ICP), wet chemical analysis, Ca‐ionometry, microvolumetric analysis of evolved CO2, BET adsorption, were applied to determine an efficiency of carbonate substitution, and to quantify the elemental composition, as well as to characterize the structure of the carbonated hydroxyapatite and the site(s) of carbonate substitution. It was shown that there is insignificant incorporation of Na into the crystal structure of HAp. Over the range of 0–4 % wt. (x
ISSN:0933-5137
1521-4052
DOI:10.1002/mawe.200800383