The Influence of Biogenic And Synthetic Starting Materials on the Properties of Porous Hydroxyapatite Bioceramics
Key Engineering Materials 2014
Kristīne Šalma-Ancāne, Līga Stīpniece, Jānis Ločs, Vitālijs Lakevičs, Zilgma Irbe, Līga Bērziņa-Cimdiņa

The aim of this study was to investigate the influence of biogenic and synthetic starting materials on properties of porous hydroxyapatite (HAp) bioceramics. HAp powders were synthesized by modified precipitation method using biogenic calcium carbonates (ostrich (Struthio camelus) egg shells, hen (Gallus gallus domesticus) egg shells, snail (Viviparus contectus) shells) and synthetic calcium oxides (Sigma-Aldrich and Fluka). Specific surface area, molecular structure and morphology of obtained powders were determined. As-synthesized HAp powders had a varied specific surface area with a wide range from 83 to 150 m2g-1 depending on CaO source. Porous bodies of HAp were prepared by in situ viscous mass foaming with NH 4HCO3 as pore forming agent. Foamed and dried green bodies were sintered at 1100 oC. The obtained bioceramics were investigated using Archimedes' method, field emission scanning electron microscopy and Brunauer-Emmett-Teller method. There are considerable differences between porous HAp bioceramics structures prepared from different sources of CaO. The choice of starting material substantially affects the macro- and microstructure of prepared porous bioceramics.


Atslēgas vārdi
Hydroxyapatite; In situ viscous mass foaming; Porosity; Porous bioceramics
DOI
10.4028/www.scientific.net/KEM.614.11

Šalma-Ancāne, K., Stīpniece, L., Ločs, J., Lakevičs, V., Irbe, Z., Bērziņa-Cimdiņa, L. The Influence of Biogenic And Synthetic Starting Materials on the Properties of Porous Hydroxyapatite Bioceramics. Key Engineering Materials , 2014, Vol.614, 11.-16.lpp. ISSN 1013-9826. Pieejams: doi:10.4028/www.scientific.net/KEM.614.11

Publikācijas valoda
English (en)
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