publication . Article . 2007

Application to the glass transition of polymers

Fraga Rivas, Iria; Montserrat Ribas, Salvador; Hutchinson, John M.;
  • Published: 30 Jan 2007 Journal: Journal of Thermal Analysis and Calorimetry, volume 87, pages 119-124 (issn: 1388-6150, eissn: 1572-8943, Copyright policy)
  • Publisher: Springer Science and Business Media LLC
  • Country: Spain
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-independen...
free text keywords: :Física::Física molecular::Física de polímers [Àrees temàtiques de la UPC], Calorimetry, Temperature measurements, Polymers, Parameter estimation, Calorimetria, Estimació d'un paràmetre, Polímers, Temperatura -- Mesurament, Physical and Theoretical Chemistry, Condensed Matter Physics, Polymer, chemistry.chemical_classification, chemistry, Modulation (music), Heat capacity, Computational physics, Glass transition, Heat flow, Inorganic chemistry, Differential scanning calorimetry, Estimation theory, Thermal analysis, Thermodynamics
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