Independent Determination of Avrami Parameter

The Avrami parameter, n, can also be determined from a single exotherm using the expression from Augis and Bennett  

The Kissinger method can also be used to determine the activation energy for viscous flow, by replacing the exothermic peak maximum temperature with the glass transformation temperature in equation 12.8. This method is particularly useful for glasses where it is difficult to form the sample needed for application of the beam-bending or fiber elongation methods discussed in Chapter 6. 

Thermal analysis of glasses using the differential scanning calorimeter has become a major technique for determination of the effect of temperature on glasses. The speed of measurement, combined with the small sample size and ease of sample preparation, leads to the use of the DSC for many measurements. Determination of the glass transformation and Active temperatures, crystallization temperatures and kinetics, and estimation of nucleation and viscosity curves have become routine using this instrument. 

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