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Cell asymmetry correction for temperature modulated differential scanning calorimetry

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Abstract

The quality of measurement of heat capacity by differential scanning calorimetry (DSC) is based on strict symmetry of the twin calorimeter. This symmetry is of particular importance for temperature-modulated DSC (TMDSC) since positive and negative deviations from symmetry cannot be distinguished in the most popular analysis methods. The heat capacities for sapphire-filled and empty aluminum calorimeters (pans) under designed cell imbalance caused by different pan-masses were measured. In addition, the positive and negative signs of asymmetry have been explored by analyzing the phase-shift between temperature and heat flow for sapphire and empty runs. The phase shifts change by more than 180° depending on the sign of the asymmetry. Once the sign of asymmetry is determined, the asymmetry correction for temperature-modulated DSC can be made.

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References

  1. A. Boiler, I. Okazaki, K. Ishikiriyama, G. Zhang and B. Wunderlich, J. Thermal Anal., 49 (1997) 1081.

    Article  Google Scholar 

  2. B. Wunderlich, ‘Thermal Analysis’, Academic Press, Boston 1990.

    Google Scholar 

  3. A. Boller, Y. Jin and B. Wunderlich, J. Thermal Anal., 42 (1994) 307.

    Article  CAS  Google Scholar 

  4. B. Wunderlich, ‘Modulated Differential Thermal Analysis’. A computer generated course of 99 screens, published on the World Wide Web. For downloading look for the URL: http://funnelweb.utcc.utk.edu/∼athas) 1995.

  5. D. A. Ditmars, S. Ishihara, S. S. Chang and G. Bernstein, J. National Bureau of Standards, 87 (1982) 159.

    CAS  Google Scholar 

  6. B. Wunderlich, Y. Jin and A. Boiler, Thermochim. Acta, 238 (1994) 277.

    Article  CAS  Google Scholar 

  7. Y. Takahashi, Thermochim. Acta, 139 (1989) 133.

    Article  CAS  Google Scholar 

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Authors and Affiliations

  1. Department of Chemistry, The University of Tennessee, 37996-1600, Knoxville, TN

    K. Ishikiriyama & B. Wunderlich

  2. Chemistry and Analytical Sciences Division, Oak Ridge National Laboratory, 37831-6197, Oak Ridge, TN, USA

    K. Ishikiriyama & B. Wunderlich

Authors
  1. K. Ishikiriyama
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  2. B. Wunderlich
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Additional information

On leave from Toray Research Center, Inc., Otsu, Shiga 520, Japan

This work was supported by the Division of Materials Research, National Science Foundation, Polymers Program, Grant # DMR 90-00520 and the Division of Materials Sciences, Office of Basic Energy Sciences, 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-AC05-960R22464.

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Ishikiriyama, K., Wunderlich, B. Cell asymmetry correction for temperature modulated differential scanning calorimetry. Journal of Thermal Analysis 50, 337–346 (1997). https://doi.org/10.1007/BF01980494

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  • DOI: https://doi.org/10.1007/BF01980494

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