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TOPEM, a new temperature modulated DSC technique

Application to the glass transition of polymers

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Abstract

TOPEM is a new temperature modulated DSC technique, introduced by Mettler-Toledo in late 2005, in which stochastic temperature modulations are superimposed on the underlying rate of a conventional DSC scan. These modulations consist of temperature pulses, of fixed magnitude and alternating sign, with random durations within limits specified by the user. The resulting heat flow signal is analysed by a parameter estimation method which yields a so-called ‘quasi-static’ specific heat capacity and a ‘dynamic’ specific heat capacity over a range of frequencies. In a single scan it is thus possible to distinguish frequency-dependent phenomena from frequency-independent phenomena. Its application to the glass transition is examined here.

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Authors and Affiliations

  1. TERBIPROMAT, Facultade de Física, Universidad de Santiago de Compostela, Santiago de Compostela, Spain, 15782

    Iria Fraga

  2. Departament de Màquines i Motors Tèrmics, ETSEIAT, Universitat Politècnica de Catalunya, Terrassa, Spain, 08222

    S. Montserrat & J. M. Hutchinson

Authors
  1. Iria Fraga
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  2. S. Montserrat
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  3. J. M. Hutchinson
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Correspondence to J. M. Hutchinson.

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Fraga, I., Montserrat, S. & Hutchinson, J.M. TOPEM, a new temperature modulated DSC technique. J Therm Anal Calorim 87, 119–124 (2007). https://doi.org/10.1007/s10973-006-7969-4

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  • DOI: https://doi.org/10.1007/s10973-006-7969-4

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