The shape of thermoanalytical curves as a function of the reaction kinetics

Abstract

The shape index S is a characteristic parameter of a thermoanalytical (TA) curve. It is demonstrated that S is a linear function of the ratio of the temperatures T 2 T 1 at two inflexion points of a TA curve. Both the intercept and slope of this function depend on the kinetic model. Therefore, it seems that all previously published papers neglecting the influence of the T 2 T 1 parameter are probably erroneous. The S( T 2 T 1 ) relationship discussed in this paper permits certain conclusions about the most probable kinetic model to be made from a single TA curve.