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2015 | 13 | 1 |
Tytuł artykułu

Structural and morphological properties of HA-ZnO powders prepared for biomaterials

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The purpose of this study was to investigate the structural and morphological properties of hydroxyapatite – zinc oxide (HA-ZnO) powders prepared to be used in an endodontic sealer formulation. The HA-ZnO was synthesized from hydroxyapatite (HA) in the presence of zinc oxide (ZnO) sol. The starting reagents were CaO, H3PO4 and a suspention of ZnO (25% in water). Following precipitation, the obtained sol was subjected to heat treatment at 110°C, 400°C, 850°C and 1050°C. The study focused on the influence of the thermal treatment on the cristallinity of precipitated powders. X-ray diffraction was used in order to study the structural properties of the obtained powder. Fourier Transform Infrared Spectroscopy (FT-IR) was used in order to evaluate the interactions between HA and ZnO. The morphology of the samples was studied by Scanning Electron Microscopy (SEM). Transmission Electron Microscopy and High Resolution Transmission Electron Microscopy (TEM, HRTEM) were used for the determination of particle size and fractal analysis. The fractal analysis of images using the standard box-counting method is presented and the results are discussed. It was demonstrated that the fractal dimension analysis is a useful method to quantitatively describe the complex microstructures and it can reveal the relation between fractal parameters.

Opis fizyczny
  • Babeș Bolyai
    University – “Raluca Ripan” Chemistry Research Institute, 30
    Fantanele street, 400294, Cluj-Napoca, Romania
  • Babeș Bolyai
    University – “Raluca Ripan” Chemistry Research Institute, 30
    Fantanele street, 400294, Cluj-Napoca, Romania
  • Technical University
    of Cluj-Napoca, 103-105 Muncii Bvd. 400641 Cluj-Napoca, Romania
  • Babeș Bolyai
    University – “Raluca Ripan” Chemistry Research Institute, 30
    Fantanele street, 400294, Cluj-Napoca, Romania
  • Babeș Bolyai
    University – “Raluca Ripan” Chemistry Research Institute, 30
    Fantanele street, 400294, Cluj-Napoca, Romania
  • Technical University
    of Cluj-Napoca, 103-105 Muncii Bvd. 400641 Cluj-Napoca, Romania
  • Technical University
    of Cluj-Napoca, 103-105 Muncii Bvd. 400641 Cluj-Napoca, Romania
  • METAV, 16-18 Zapada Mieilor St., 71529 Bucharest,
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