15 March 2002 Application of IR imaging during temperature-modulated differential scanning calorimetry (TMDSC) measurements
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In a temperature-modulated differential scanning calorimetry (TMDSC) system, temperatures are measured by thermocouples under the sample and reference furnaces. TMDSC helps to accurately measure temperature during a DSC measurement. It also helps the researcher to establish a more realistic model to calculate heat capacity of various materials. This study examined assumption of temperature gradient in TMDSC characterization. An infrared camera was used to obtain surface temperature maps of DSC cells during temperature sweeps. TMDSC units from Perkin-Elmer and TA Instrument were studied using different heating and cooling rates. Temperature gradient exists between the top and bottom of the sample. IR images showed that temperature distributions within the sample and reference cells exist. Phase lags between the top and bottom temperatures were also observed.
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Hsin Wang, M. Pyda, R. Androsch, Bernhard Wunderlich, "Application of IR imaging during temperature-modulated differential scanning calorimetry (TMDSC) measurements", Proc. SPIE 4710, Thermosense XXIV, (15 March 2002); doi: 10.1117/12.459610; https://doi.org/10.1117/12.459610

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