A computing method for drawing the dsc baseline

When a sample is investigated by DSC (differential scanning calorimetry), the rates of evolved heat of the initial and final states are frequently different, so that it is difficult to determine the heat of transition and the evoked heat-rate values. This paper presents a theoretical analysis of thi...

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Bibliographic Details
Published in:Thermochimica acta 1989-09, Vol.150 (1), p.53-61
Main Authors: Xiang, Gao, Yunliang, Lao
Format: Article
Language:English
Subjects:
Chemical thermodynamics
Chemistry
Exact sciences and technology
General and physical chemistry
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Summary:When a sample is investigated by DSC (differential scanning calorimetry), the rates of evolved heat of the initial and final states are frequently different, so that it is difficult to determine the heat of transition and the evoked heat-rate values. This paper presents a theoretical analysis of this problem. A computing method has been derived for determining the heats of transition and the true values of the rate of evolved heat, and a corresponding FORTRAN program has been composed with which several common reaction mechanism have been modelled. The results show that the computing method has high reliability and good accuracy.
ISSN:0040-6031
1872-762X
DOI:10.1016/0040-6031(89)85311-0