Journal
THERMOCHIMICA ACTA
Volume 356, Issue 1-2, Pages 173-180Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0040-6031(00)00517-7
Keywords
repeated temperature scanning thermal analysis; kinetics; kinetic analysis methods; activation energy; conversion function; temperature-modulated thermal analysis; temperature-modulated thermogravimetry
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A repeated temperature scanning thermal analysis, such as temperature-modulated thermogravimetry, is a useful technique for the kinetic analysis of thermal decomposition in a defined temperature range. In this technique, repeated temperature scanning, i.e., cyclic heating and cooling in a defined temperature range, is introduced into thermal analysis. First, the kinetics for this new mode of temperature change are considered theoretically, and some useful relations for kinetic analysis are revealed. From these relations, methods for estimating kinetic parameters, such as the activation energy, the pre-exponential factor and the conversion functions, are derived. The errors in these parameters are also examined. (C) 2000 Elsevier Science B.V. All rights reserved.
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