Measurement of Temperature and Enthalpy Change

DSC curves. The only difference is that the heat flow in DSC replaces temperature change in DTA. 

The enthalpy change of phase transformation can be directly measured from the corresponding peak area of a DSC curve. The DSC is commonly plotted as per mass unit versus temperature. The total enthalpy change AH should be proportional to the peak area (Ap). 

DTA and DSC are so similar in their working principles and in characteristics of their curves that we often do not distinguish between these two techniques in their applications for materials characterization. These two techniques are especially useful in characterization of polymeric materials, as well as in characterization of inorganic materials. Some typical applications of DTA and DSC are introduced in this section. 

The principle of heat capacity measurement is based on proportionality of the DSC response to the heat capacity. By definition, the heat capacity of materials under constant pressure is the 

Polymeric materials are more sensitive to temperature than metals and ceramics. A large number of polymers exhibit physical and chemical property changes with changes in temperature as 

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