Author: E.-Y. Ding
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  • 1 South China University of Technology College of Material Science and Engineering Guangzhou 510641 P. R. China Guangzhou 510641 P. R. China
  • | 2 Chinese Academy of Sciences Laboratory of Cellulose and Lignocellulosics Chemistry, Guangzhou Institute of Chemistry Guangzhou 510650 P. R. China Guangzhou 510650 P. R. China
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Abstract  

With the computer simulations, it has been found that in Differential Thermal Analysis (DTA) the overlapped peaks do not satisfy the linear overlapping principle, and the relationship between the overlapped peaks is rather complex that is a function of sample thermal conductivity, specific heat, quantity and latent heats, etc. If the first point where the two peaks begin to overlap is at the posterior half of the first peak curve and the two overlapped peaks can be identified by two different peaks, from the curve of overlapped peaks we can know that the temperature corresponding to the first point deviating from the sample's first phase change curve is the sample's second phase change temperature.