We explored the optimum conditions in modulation of the program temperature and sample preparation to obtain absolute values of heat capacity from quasi-isothermal measurements of temperature-modulated differential scanning calorimetry. A Mettler-Toledo 820 calorimeter and Perkin-Elmer DSC 7 were used for this work, using saw-tooth modulation as well as sinusoidal modulation. We adopted a simple model to analyze the temperature response of the calorimeters and calibrated the results more precisely.
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