Macroscopic non-equilibrium thermodynamics in dynamic calorimetry

Jean-Luc Garden (1)

1 NEEL - Institut Néel

What is really measured in dynamic calorimetric experiments is still an open question. This paper is devoted to this question, which can be usefully envisaged by means of macroscopic non-equilibrium thermodynamics. From the pioneer work of De Donder on chemical reactions and with other authors along the 20th century, the question is tackled under an historical point of view. A special attention is paid about the notions of frequency dependent complex heat capacity and entropy production due to irreversible processes occurring during an experiment. This phenomenological approach based on thermodynamics, not widely spread in the literature of calorimetry, could open significant perspectives on the study of macro-systems undergoing physico-chemical transformations probed by dynamic calorimetry.

Mots clés: Complex heat capacity; ac-calorimetry; Non-equilibrium thermodynamics; Affinity; Entropy production; Complex heat capacity.; Frequency dependent heat capacity

Domaines: Matière Molle [cond-mat.soft]

Jean-Luc Garden. Macroscopic non-equilibrium thermodynamics in dynamic calorimetry. Thermochimica Acta, 2007, 452 (2), pp.85-105. ⟨10.1016/j.tca.2006.08.017⟩. ⟨hal-00158080⟩