Paper Title:
Highly Bioactive Porous Composite Scaffolds of Bovine Hydroxyapatite (BHA-Ti, BHA-TiO2, BHA-Li2O)
  Abstract

Porous scaffolds of hydroxyapatite (HA), derived from calcined bovine bones and doped with various reinforcing materials, such as Ti, TiO2 and Li2O, were produced with the aid of commercial sugar, which was added as 20 wt% with respect to the total batch, and sintering at 1200°C and 1300°C. The samples were characterized by SEM and X-ray diffraction analysis as well as by porosity measurements. The experimental results showed that porosity can be controlled by the correct selection of doping materials. The optimum sintering temperature was 1200°C since firing at 1300°C caused extended sintering and thus porosity was considerably reduced. Matching of chemical nature as well as thermal expansion coefficients between HA and the doping components are of high importance for the structural integrity of the resultant scaffolds. Doping with Li2CO3 seemed to have the highest potential for achieving high porosity, likely due to the decomposition to Li2O, but the amount of Li2CO3 used should not jeopardizing HA bioactivity. The use of natural sugar is an economic way of producing safe for the health porous HA scaffolds.

  Info
Periodical
Key Engineering Materials (Volumes 330-332)
Main Theme
Edited by
Xingdong Zhang, Xudong Li, Hongsong Fan, Xuanyong Liu
Pages
411-414
DOI
10.4028/www.scientific.net/KEM.330-332.411
Citation
F. N. Oktar, S. Agathopoulos, G. Goller, H. Gökçe, E.S. Kayali, S. Salman, "Highly Bioactive Porous Composite Scaffolds of Bovine Hydroxyapatite (BHA-Ti, BHA-TiO2, BHA-Li2O)", Key Engineering Materials, Vols. 330-332, pp. 411-414, 2007
Online since
February 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: L.S. Ozyegin, Oguzhan Gunduz, Faik N. Oktar, B. Oz, Simeon Agathopoulos, S. Salman, L. Ovecoglu
Abstract:The aim of this study was to prepare high performance biomaterials suitable for use at load bearing applications with high bioactivity. The...
359
Authors: L.S. Ozyegin, Faik N. Oktar, Simeon Agathopoulos, S. Salman, Y. Bozkurt, Niyazi Eruslu
Abstract:Composites of calcinated bovine bone derived hydroxyapatite (BHA) doped 0.5 and 1 wt% CaF2 were prepared by sintering. The production of BHA...
43
Authors: L.S. Ozyegin, S. Salman, Faik N. Oktar, Simeon Agathopoulos, Onur Meydanoglu, S. Akesi, I. Yukler
Abstract:Composites of calcinated bovine bone derived hydroxyapatite (HA) with 0.5 and 1 wt% Y2O3 were prepared by sintering. Money and time saving...
47
Authors: S. Salman, Faik N. Oktar, Oguzhan Gunduz, Simeon Agathopoulos, M. Lutfy Öveçoğlu, E.S. Kayali
Abstract:Composite biomaterials of calcinated bovine bone derived hydroxyapatite (HA) doped with 5 and 10 wt% commercial inert glass (CIG) were...
189
Authors: Oguzhan Gunduz, L.S. Ozyegin, Sergey V. Dorozhkin, Onur Meydanoglu, Niyazi Eruslu, S. Kayali, Simeon Agathopoulos, Faik N. Oktar
Abstract:Composites of calcinated bovine bone derived hydroxyapatite (HA) with 5, 7.5 and 10 wt % B2O3 were prepared by sintering. The production of...
403