Fabrication of Porous Hydroxyapatite through Combination of Sacrificial Template and Direct Foaming Techniques

Authors

  • Sujin Woottichaiwat Chulalongkorn University
  • Somchai Puajindanetr Chulalongkorn University
  • Serena M. Best University of Cambridge

DOI:

https://doi.org/10.4186/ej.2011.15.2.1

Keywords:

Porous hydroxyapatite, fabrication, sacrificial template, direct foaming.

Abstract

The porous hydroxyapatite (HA) bioceramics were prepared through combination of sacrificial template and direct foaming techniques using PMMA granules (varied from 5 to 50 wt% in content) as a template and H2O2 solution (varied from 5 to 30 wt% in concentration) as a foaming agent, respectively. The effects of PMMA content and H2O2 concentration on final porosity, microstructure and mechanical strengths were studied. The porous samples using PMMA provided the porosity ranging from 52% to 75%, the samples using H2O2 had the porosity ranging from 82% to 85%, and the sample using both pore formers provided the porosity ranging between 84% and 90%. The higher content of PMMA and concentration of H2O2 led the porosity increased, leading to a decrease in the compressive and flexural strengths. Furthermore, this combination technique allowed interconnected pores having two levels of pore size, which were come from PMMA and H2O2. The PMMA formed the small pores with the diameter ranging between 100 and 300 μm, while H2O2 provided the larger pores with the diameter ranging from 100 to 1,000 μm depending on concentration.

Downloads

Download data is not yet available.

Author Biographies

Sujin Woottichaiwat

Department of Industrial Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand

Somchai Puajindanetr

Department of Industrial Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand

Serena M. Best

Department of Materials Science and Metallurgy, University of Cambridge, Cambridge CB2 3QZ, UK

Published

Vol 15 No 2, Feb 24, 2011

How to Cite

[1]
S. Woottichaiwat, S. Puajindanetr, and S. M. Best, “Fabrication of Porous Hydroxyapatite through Combination of Sacrificial Template and Direct Foaming Techniques”, Eng. J., vol. 15, no. 2, pp. 1-16, Feb. 2011.