Advertisement

Journal of Thermal Analysis and Calorimetry

, Volume 96, Issue 3, pp 937–942 | Cite as

Synthesis and characterization of hydroxyapatite obtained from different organic precursors by sol–gel method

  • Alexandra Ioiţescu
  • Gabriela Vlase
  • T. Vlase
  • G. Ilia
  • N. Doca
Article

Abstract

The synthesis of four types of hydroxyapatite synthesized from calcium chloride and four different organic phosphites is presented. The method of synthesis chosen is the sol–gel route, which has a number of advantages compared to other methods, like the intimate contact between reactants and the milder synthesis conditions. The samples were thermally treated, the TG/DTG/DTA curves being obtained at four heating rates, namely: 7, 10, 12 and 15 °C min−1. The samples were characterized before and after the thermal treatment using FT-IR analysis. The FT-IR spectra certified that the formed compounds represent hydroxyapatite. Based on the information from the TG curves and IR spectra interpretation, a reaction mechanism was proposed.

Keywords

FT-IR Hydroxyapatite Sol–gel Thermal analysis 

References

  1. 1.
    Liou SC, Chen SY, Lee HY, Bow JS. Structural characterization of nano-sized calcium deficient apatite powders. Biomaterials. 2004;25:189–96.CrossRefGoogle Scholar
  2. 2.
    Jillavenkatesa A, Condrate RA. Sol–gel processing of hydroxyapatite. J Mater Sci. 1998;33:4111–9.CrossRefGoogle Scholar
  3. 3.
    Guzmán Vásquez C, Piña Barba C, Munguia N. Stoichiometric hydroxyapatite obtained by precipitation and sol–gel processes. Revista Mexicana de Fisica. 2005;51(3):284–93.Google Scholar
  4. 4.
    Beganskiene A, Dudko O, Sirutkaitis R, Giraitis R. Water based sol-gel synthesis of hydroxyapatite. Mat Sci (Medžiagotyra). 2003;9(4):383–6.Google Scholar
  5. 5.
    Ioiţescu A, Vlase G, Vlase T, Doca N. Kinetics of decomposition of different acid calcium phosphates. J Therm Anal Cal. 2007;88(1):121–5.CrossRefGoogle Scholar
  6. 6.
    Pop N, Vlase G, Vlase T, Doca N, Mogoş A, Ioitescu A. Compensation effect as a consequence of vibrational energy transfer in homogeneous and isotropic heat field. J Therm Anal Cal. 2008;92(1):313–7.CrossRefGoogle Scholar
  7. 7.
    Silverstein RM, Clayton Basster G, Morrell T. Spectrometric identification of the compounds. 5th ed. New York: Wiley; 1995.Google Scholar
  8. 8.
    Feng W, Mu-Sen L, Yu-Peng L, Sheng-Song G. Synthesis of nanocrystalline hydroxyapatite powders in stimulated body fluid. J Mat Sci. 2005;40:2073–6.CrossRefGoogle Scholar
  9. 9.
    Cross AD. Introduction to practical infrared spectroscopy. London: Butterworths Publications Limited; 1960. Reprinted in 1962.Google Scholar

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2009

Authors and Affiliations

  • Alexandra Ioiţescu
    • 1
    • 2
  • Gabriela Vlase
    • 2
  • T. Vlase
    • 2
  • G. Ilia
    • 3
  • N. Doca
    • 2
  1. 1.Condensed Matter DepartmentNational Institute for Research and Development for Electrochemistry and Condensed MatterTimisoaraRomania
  2. 2.Research Center for Thermal Analysis in Environmental ProblemsWest University of TimişoaraTimisoaraRomania
  3. 3.Chemistry Institute of TimisoaraTimisoaraRomania

Personalised recommendations