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Novel equation to determine activation energy of enthalpy relaxation

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Abstract

A novel equation fully utilizing the advantages of constant ratio thermal cycles (q +/q − = const.) was derived for determination of the apparent activation energy of enthalpy relaxation. It is based on the shift of temperature corresponding to the maximum of relaxation peak T p with the applied heating rate: −Δh */R = dln(q +)/dT −1p . The equation was extensively tested for all types of structural relaxation behavior. It was proven to be highly accurate and independent from most data-distortive effects.

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Acknowledgements

This work was supported by the Czech Science Foundation under Project No. P106/11/1152.

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Authors and Affiliations

  1. Department of Physical Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10, Pardubice, Czech Republic

    Roman Svoboda

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  1. Roman Svoboda
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Correspondence to Roman Svoboda.

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Svoboda, R. Novel equation to determine activation energy of enthalpy relaxation. J Therm Anal Calorim 121, 895–899 (2015). https://doi.org/10.1007/s10973-015-4619-8

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  • DOI: https://doi.org/10.1007/s10973-015-4619-8

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