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Structural and morphological induced modifications in hydroxyapatite obtained by bone thermal treatments

F. MICULESCU1, A. MAIDANIUC1, S.I. VOICUb2,* , M. MICULESCU1, A. BERBECARU1, L.T. CIOCAN3, A. PURCARU1, A. SEMENESCU1, O. PREDA4

Affiliation

  1. ”Politehnica” University of Bucharest, Faculty of Materials Science and Engineering, 313, Independenţei Blvd., B"ucharest, 060042, Romania
  2. ”Politehnica” University of Bucharest, Faculty of Applied Chemistry and Materials Sciences, 1-7 Gheorghe Polizu, Bucharest, 011061, Romania
  3. "Carol Davila” University of Medicine and Pharmacy, Prosthetics Technology and Dental Materials Department, 37, Dionisie Lupu Street., Bucharest, 020022, Romania
  4. Romanian American University, Management and Marketing Department, 1B, Expoziției Blvd., Bucharest, 012101, Romania

Abstract

As yet, production of hydroxyapatite through thermal treatment of animal hard tissues is one efficient and economical alternative to classical chemical synthesis and provides a suitable similarity with bone tissue. The production methods’ optimization requires the proper assessment of tissue transformations induced by the variation of heat treatment parameters. The present study aimed to emphasize the chemical, structural and morphological modifications defined by heat treating the bovine bone at different temperatures (1000, 1100, 1200 and 1300°C) by subsequently characterising it using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD). SEM results confirmed that increasing the heat treatment’s temperature will lead to a growth of the hydroxyapatite grain size and a gradual decrease of porosity. The FT-IR analysis showed some modifications in the phosphate ions vibrations for the samples heat-treated at 1100 and 1200°C. After that, the structural evaluation performed by XRD identified some minor structural transformations after heat treating the samples at 1300°C, but the general analysis proved that increasing the heat treatment’s temperature has no significant influence upon the crystallinity. The complementary analysis showed that the thermal treatment’s temperature is one of the factors that influence the characteristics of bovine bone derived products..

Keywords

Bovine bone derived hydroxyapatite, XRD, FT-IR, SEM.

Submitted at: April 9, 2015
Accepted at: Sept. 9, 2015

Citation

F. MICULESCU, A. MAIDANIUC, S.I. VOICUb, M. MICULESCU, A. BERBECARU, L.T. CIOCAN, A. PURCARU, A. SEMENESCU, O. PREDA, Structural and morphological induced modifications in hydroxyapatite obtained by bone thermal treatments, Journal of Optoelectronics and Advanced Materials Vol. 17, Iss. 9-10, pp. 1361-1366 (2015)