Study on Separation Method of Overlapped Peaks in Differential Thermal Analysis with Computer Simulation |
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Authors: | Ding E-Y |
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Institution: | (1) College of Material Science and Engineering, South China University of Technology, Guangzhou, 510641, P. R. China;(2) Laboratory of Cellulose and Lignocellulosics Chemistry, Guangzhou Institute of Chemistry, Chinese Academy of Sciences, 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.
This revised version was published online in August 2006 with corrections to the Cover Date. |
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Keywords: | DTA overlapping principle separation of overlapped peaks temperature gradients within sample |
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