The effects of temperature on the behaviour of an apatitic calcium phosphate cement

  • M. P. Ginebra
  • E. Fernández
  • F. C. M. Driessens
  • M. G. Boltong
  • J. Muntasell
  • J. Font
  • J. A. Planell
Article

DOI: 10.1007/BF00134332

Cite this article as:
Ginebra, M.P., Fernández, E., Driessens, F.C.M. et al. J Mater Sci: Mater Med (1995) 6: 857. doi:10.1007/BF00134332

An apatitic calcium phosphate cement is obtained by mixing α-tricalcium phosphate (α-TCP) and precipitated hydroxyapatite into a cement powder, and by then mixing this powder with an aqueous solution of Na2HPO4 as an accelerator. Setting times were reduced by about 30% by increasing the temperature from 22 to 37°C. Compressive strength reached higher intermediate and final values at 37 °C. Degrees of transformation of the α-TCP in the resulting calcium-deficient hydroxyapatite (CDHA) were much higher at 37 °C after 24 h of storage in Ringer's solution according to X-ray diffraction. Differential scanning calorimetry indicated that the rate of reaction increased by a factor of about 5 when the temperature was increased from 25 to 37 °C. Scanning electron microscopy showed that the microstructure was more homogeneous and that a more tight entanglement of the precipitated CDHA crystals occurred after storage at 37 °C than at room temperature.

Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • M. P. Ginebra
    • 1
    • 2
  • E. Fernández
    • 1
    • 2
  • F. C. M. Driessens
    • 1
    • 2
  • M. G. Boltong
    • 1
    • 2
  • J. Muntasell
    • 3
  • J. Font
    • 3
  • J. A. Planell
    • 1
    • 2
  1. 1.Department of Materials ScienceUniversitat Politècnica de CatalunyaBarcelonaSpain
  2. 2.Department of MetallurgyUniversitat Politècnica de CatalunyaBarcelonaSpain
  3. 3.Department of Physics and Nuclear EngineeringUniversitat Politècnica de CatalunyaBarcelonaSpain