APPLICABILITY OF KISSINGER'S RELATION IN THE DETERMINATION OF ACTIVATION ENERGY OF GLASS TRANSITION PROCESS

The present paper reports the non-isothermal DSC measurements on 30 binary and ternary chalcogenide glasses.The activation energy of glass transition (E t ) is calculated using Kissinger's relation which is basically derived for amorphous to crystalline transformation. The results show that E t values obtained from Kissinger's relation are in good agreement with the E t values which are obtained using Moynihan's relation derived, based on the concept of thermal relaxation. It has also been found that the composition dependence of E,, obtained from the two different relations, is similar in most of the glassy systems. This shows that Kissinger's relation can be applied in determining the activation energy of glass transition process also. This shows that the phase transformation near glass transition temperature is analogous to phase transformation near crystallization temperature.