Journal of Thermal Analysis and Calorimetry

, Volume 111, Issue 1, pp 627–631 | Cite as

Thermal study of l-alanine, l-threonine, and taurine crystals related to hydrogen bonding

  • R. J. C. LimaEmail author
  • E. C. Santos-Junior
  • A. J. D. Moreno
  • P. F. Façanha-Filho
  • P. T. C. Freire
  • M. I. Yoshida


In this study l-alanine, l-threonine, and taurine crystals were characterized through dilatometric technique and thermogravimetric and differential thermal analysis. The dilatometric analysis shows that the thermal expansion of the crystals is correlated with the strengths of local hydrogen bonding in the amino acid structures at room temperature. Thermogravimetric analysis and differential thermal analysis of the l-alanine, taurine, and l-threonine crystals have been performed at high temperatures. No clear correlation between the hydrogen bonding strengths and endothermic peak positions was observed.


l-Alanine l-Threonine Taurine Thermal analysis Dilatometry 



Authors acknowledge financial support from CNPq, CAPES, and FAPEMA.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2012

Authors and Affiliations

  • R. J. C. Lima
    • 1
    Email author
  • E. C. Santos-Junior
    • 1
  • A. J. D. Moreno
    • 1
  • P. F. Façanha-Filho
    • 1
  • P. T. C. Freire
    • 2
  • M. I. Yoshida
    • 3
  1. 1.Centro de Ciências Sociais, Saúde e TecnologiaUniversidade Federal do MaranhãoImperatrizBrazil
  2. 2.Departamento de FísicaUniversidade Federal do CearáFortalezaBrazil
  3. 3.Departamento de QuímicaUniversidade Federal de Minas GeraisBelo HorizonteBrazil

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