ISSN:
1572-8943
Keywords:
asymmetry correction
;
calibration
;
heat flux calorimeter
;
heat capacity
;
power compensated calorimeter
;
temperature modulated differential scanning calorimetry
;
TMDSC
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The quality of measurement of heat capacity by differential scanning calorimetry (DSC) is based on the symmetry of the twin calorimeters. This symmetry is of particular importance for the temperature-modulated DSC (TMDSC) since positive and negative deviations from symmetry cannot be distinguished in the most popular analysis methods. Three different DSC instruments capable of modulation have been calibrated for asymmetry using standard non-modulated measurements and a simple method is described that avoids potentially large errors when using the reversing heat capacity as the measured quantity. It consists of overcompensating the temperature-dependent asymmetry by increasing the mass of the sample pan.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01996796
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