Conversion of Strontium Hydroxyapatite Nanopowders to Porous Scaffolds for Bone Implant Application

Che Murad Mardziah; Iis Sopyan; Koay Mei Hyie; N.R. Nik Roselina

doi:10.4028/www.scientific.net/AMM.607.3

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Conversion of Strontium Hydroxyapatite Nanopowders to Porous Scaffolds for Bone Implant Application
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 607Conversion of Strontium Hydroxyapatite Nanopowders...

Conversion of Strontium Hydroxyapatite Nanopowders to Porous Scaffolds for Bone Implant Application

Abstract:

The fabrication of Sr hydroxyapatite (HA) porous scaffolds was done by using polymeric sponge method. To prepare the porous samples, the synthesized SrHA nanopowders were mixed with distilled water and appropriate amount of dispersing agent followed by drying in the ambient air and sintering at 1300°C. The compressive strength of the materials was strongly influenced by the porosity, while there was almost no dependence on the crystallinity of the powders since XRD patterns showed high crystallinity of HA phase for all porous samples. Morphological evaluation by FESEM revealed that the SrHA scaffolds were characterized by macro-micro interconnected porosity, which replicates the morphology of the cancellous bone. Compression test on the porous scaffolds demonstrated that doping 10 mol% of strontium in HA has increased the compressive strength by a factor of two compared to the undoped HA with 1.81±0.26 MPa at 41% porosity.

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Periodical:

Applied Mechanics and Materials (Volume 607)

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3-6

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.607.3

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Online since:

July 2014

Authors:

Che Murad Mardziah*, Iis Sopyan, Koay Mei Hyie, N.R. Nik Roselina

Keywords:

Compressive Strength, Nanopowder, Porous Scaffolds, Strontium Hydroxyapatite

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