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Theoretical and Experimental Interpretation of the Signals From ΔITA

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Abstract

Discontinuous isoperibolic thermal analysis (ΔITA) is a phase diagram investigation technique applicable to organic components systems (with at least one liquid phase). The elementary signal is composed by the evolution of the temperature of the system vs. time after a composition shift. A theoretical analysis and a mathematical modeling of this signal show that the overall enthalpy exchanged multiplied by a proportional factor can be obtained. From different experiments, evidence is given that this semi-quantitative calorimetric measurement is reliable. Thus, ΔITA allows consistent and accurate descriptions of phase diagrams and is a real relative calorimetric measurement technique.

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Authors and Affiliations

  1. Unité de Croissance Cristalline et de Modélisation Moléculaire (UC2M2), UPRES EA 2659 IRCOF, Université de Rouen, F-76821, Mont Saint-Aignan Cedex, France

    P. Marchand, L. Lefebvre, G. Perez & G. Coquerel

  2. Laboratoire d’Energétique et de Synthèse Inorganique, UPRES A CNRS 5079, Université Claude Bernard Lyon I, 43 bd 11 nov. 1918, F-69622, Villeurbanne Cedex, France

    J.-J. Counioux

Authors
  1. P. Marchand
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  2. L. Lefebvre
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  3. G. Perez
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  4. J.-J. Counioux
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  5. G. Coquerel
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Correspondence to P. Marchand.

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Marchand, P., Lefebvre, L., Perez, G. et al. Theoretical and Experimental Interpretation of the Signals From ΔITA. Journal of Thermal Analysis and Calorimetry 68, 37–47 (2002). https://doi.org/10.1023/A:1014964315878

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  • DOI: https://doi.org/10.1023/A:1014964315878

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