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Title:
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TOPEM, a new temperature modulated DSC technique - Application to the glass transition of polymers
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Author:
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Fraga Rivas, Iria; Montserrat Ribas, Salvador; Hutchinson, John M.
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Other authors:
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Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics; Universitat Politècnica de Catalunya. TERFIQ - Grup de Termodinàmica i Fisico-Química |
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Abstract:
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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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Abstract:
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Peer Reviewed |
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Subject(s):
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-Àrees temàtiques de la UPC::Física::Física molecular::Física de polímers
-Calorimetry
-Temperature measurements
-Polymers
-Parameter estimation
-Calorimetria
-Estimació d'un paràmetre
-Polímers
-Temperatura -- Mesurament |
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Rights:
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Document type:
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Article - Published version
Article |
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