Abstract
Temperature gradients within the sample and furnace in temperature-modulated differential scanning calorimetry (TMDSC) are studied for a power-compensation calorimeter of the Perkin Elmer type. The temperature measurements were made with a high-speed, high-resolution infrared camera. Differences between programmed and actual temperature amplitudes are determined as a function of sample thickness for a sawtooth modulation with up to 48 K min-1 heating and cooling rates. Phase angles have been established, and the effect of open and sealed sample pans has been analyzed. A simple one-dimensional description of the observed effects is made and a three-dimensional one is suggested based on a model available in the literature.
| Original language | English |
|---|---|
| Pages (from-to) | 661-679 |
| Number of pages | 19 |
| Journal | Journal of Thermal Analysis and Calorimetry |
| Volume | 61 |
| Issue number | 3 |
| DOIs | |
| State | Published - 2000 |
| Externally published | Yes |
Funding
‘The submitted manuscript has been authored by a contractor of the U.S. Government under the contract No. DE-AC05-96OR22464. Accordingly, the U.S. Government retains a non-exclusive, royalty-free license to publish, or reproduce the published form of this contribution, or allow others to do so, for U.S. Government purposes.’ This work was supported by the Division of Materials Research, National Science Foundation, Polymers Program, Grant # DMR-9703692 and the Division of Materials Sciences, Office of Basic Energy Sciences and the Office of Transportation Technologies, as part of the High Temperature Materials Laboratory User Program, U.S. Department of Energy at Oak Ridge National Laboratory, managed by Lockheed Martin Energy Research Corp. for the U.S. Department of Energy, under contract number DE-AC05-96OR22464.
| Funders | Funder number |
|---|---|
| Division of Materials Sciences | |
| Lockheed Martin Energy Research Corp. | |
| Office of Transportation Technologies | |
| National Science Foundation | DMR-9703692 |
| U.S. Department of Energy | DE-AC05-96OR22464 |
| Division of Materials Research | |
| Basic Energy Sciences | |
| Oak Ridge National Laboratory |
Keywords
- Differential scanning calorimetry (dsc)
- Infrared thermography, phase angle
- Temperature gradient
- Temperature-modulated differential scanning calorimetry (tmdsc)