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


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.


FT-IR Hydroxyapatite Sol–gel Thermal analysis 


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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

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