Application of IR imaging during temperature-modulated differential scanning calorimetry (TMDSC) measurements

Hsin Wang; M. Pyda; R. Androsch; Bernhard Wunderlich

doi:10.1117/12.459610

15 March 2002 Application of IR imaging during temperature-modulated differential scanning calorimetry (TMDSC) measurements

Hsin Wang, M. Pyda, R. Androsch, Bernhard Wunderlich

Author Affiliations +

Proceedings Volume 4710, Thermosense XXIV; (2002) https://doi.org/10.1117/12.459610
Event: AeroSense 2002, 2002, Orlando, FL, United States

Abstract

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, and Bernhard Wunderlich "Application of IR imaging during temperature-modulated differential scanning calorimetry (TMDSC) measurements", Proc. SPIE 4710, Thermosense XXIV, (15 March 2002); https://doi.org/10.1117/12.459610

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