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Evaluation of the impact of pH of the reaction mixture, type of the stirring, and the reagents' concentration in the wet precipitation method on physicochemical properties of hydroxyapatite so as to enhance its biomedical application potential.

Authors :
Głąb M
Kudłacik-Kramarczyk S
Drabczyk A
Kordyka A
Godzierz M
Wróbel PS
Tomala A
Tyliszczak B
Sobczak-Kupiec A
Source :
Journal of biomedical materials research. Part B, Applied biomaterials [J Biomed Mater Res B Appl Biomater] 2022 Dec; Vol. 110 (12), pp. 2649-2666. Date of Electronic Publication: 2022 Jul 11.
Publication Year :
2022

Abstract

Hydroxyapatite (HAp) constitutes a significant inorganic compound which due to its osteoinductivity, osteoconductivity as well as the ability to promote bone growth and regeneration is widely applied in development of biomaterials designed for bone tissue engineering. In this work, various synthesis methodologies of HAp based on the wet precipitation technique were applied, and the impact of pH of the reaction mixture, the concentration of individual reagents as well as the type of stirring applied (mechanical/magnetic) on the properties of final powders was discussed. Spectroscopic methods (Fourier transform infrared, Raman) and X-ray diffraction allowed to verify the synthesis parameters leading to obtaining calcium phosphate with 96% HAp in phase which indicated higher homogeneity of obtained powder (93.4%) than commercial HAp. Powders' morphology was evaluated using microscopic techniques while specific surface area was determined via Brunauer-Emmett-Teller analysis. Particle size distribution, porosity of powders, and stability of HAp suspensions were also characterized. It was proved that synthesis at pH = 11.0 using mechanical stirring resulted in calcium phosphate with a high phase homogeneity and homogeneous pore size distribution (6-20 nm). Moreover, obtained HAp powder showed 71.8% more specific surface area than commercial material-that is, 110 m <superscript>3</superscript> /g for synthetic HAp and 64 m <superscript>3</superscript> /g in the case of commercial powder-which, in turn, is significant in terms of its potential application as carrier of active substances. Thus it was demonstrated that by applying appropriate conditions of HAp synthesis it is possible to obtain powder with properties enhancing its application potential for medical purposes.<br /> (© 2022 Wiley Periodicals LLC.)

Details

Language :
English
ISSN :
1552-4981
Volume :
110
Issue :
12
Database :
MEDLINE
Journal :
Journal of biomedical materials research. Part B, Applied biomaterials
Publication Type :
Academic Journal
Accession number :
35816273
Full Text :
https://doi.org/10.1002/jbm.b.35118