Determination of Apparent Activation Energy by Kissinger Method

2 Determination of Apparent Activation Energy by Kissinger Method [10] 

In this method, from the correlation between peak temperature Tp and heating rate p for more than four thermal analysis curves of derivative type (such as DTA and DTG curves), the apparent activation energy can be determined according to the equation 

Taking DTA curves for polyarylsulfone as an example, the peak temperatures at different heating rates are listed in Table 3,3. 

From the slope of the plot of log(0/Tp) vs T, , based on the data in Tabic 3.3, can be estimated according to the equation 

Although four thermal analysis curves are necessary for this method, the calculation is simple. 

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