Imperfections of Kissinger Evaluation Method
and Crystallization Kinetics¹

P. Holba and J. esták

New Technologies-Research Centre of the Westbohemian Region, University of West Bohemia in Pilsen (NTC–ZU),
Universitní 8, CZ–301 14 Plze, Czech republic

e-mail: holbap@gmail.com

Received December 19, 2013

Abstract—The famous Kissinger´s kinetic evaluation method (Anal. Chem. 1957) is examined with respect to:
a) the relation between the DTA signal (t) and the reaction rate r(t) d/dt; b) the requirements on reaction
mechanism model f(); and c) the relation of starting kinetic equation to the equilibrium behavior of sample
under study. Distorting effect of heat inertia and difference between the temperature T_p of extreme DTA devi-
ation and the temperature T_m at which the reaction rate is maximal are revealed. The kinetic equations respect-
ing the influence of equilibrium temperature T_eq, especially fusion temperature T_f, are tested as bases for a mod-
ified Kissinger-like evaluation of kinetics.

Keywords: DTA, Kissinger method, nonisothermal kinetics, heat inertia, driving force, crystallization, equilib-
rium temperature, melting temperature

DOI: 10.1134/S1087659614050058

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