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Current Physical Chemistry

Author(s): Erdoğan Karip* and Mehtap Muratoğlu

DOI: 10.2174/1877946809666191115111909

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Characterization of Hybrid Bio-Ceramic Hydroxyapatites Reinforced by Expanded Perlite-TiO2-ZrO2-MgO-P2O5

Page: [136 - 143] Pages: 8

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Abstract

Background: Hydroxyapatite, which is naturally and synthetically available, is often used as a biomaterial because of its similarity to bone.

Aim: In this study, Natural hydroxyapatite powder, synthesized from sheep bone, and synthetic hydroxyapatite were used as matrix.

Materials and Methods: Hybrid bio-ceramic composites were obtained by adding 5 wt. % expanded perlite-TiO2-ZrO2-MgO-P2O5 to both matrixes. The bio-ceramic materials which were mixed with mechanical mixer for 30 minutes were pressed with hydraulic press under 25 MPa pressure and sintered at 900°C for 1 hour. Density, micro-hardness, X-Ray Diffraction (XRD), Scanning Electron Microscope (SEM) and Energy Dispersive Spectroscopy (EDS) analysis were performed to determine characteristics of the samples.

Result: As a result, it was identified that the micro-hardness of natural hydroxyapatite was higher. In addition, the increase in micro-hardness values of ZrO2-reinforced samples was higher than the TiO2-reinforced samples.

Conclusion: Hydroxyapatite, calcium silicate, calcium phosphate structures were observed in XRD analysis. Micro-pores were observed in TiO2-reinforced samples while more dense structures were observed in ZrO2-reinforced samples.

Keywords: Expanded perlite, hydroxyapatite, MgO, P2O5, TiO2, ZrO2.

Graphical Abstract

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