Authors:B. Wunderlich, A. Boller, I. Okazaki, and S. Kreitmeier
Temperature-modulated differential scanning calorimetry (TMDSC) is based on heat flow and represents a linear system for the measurement of heat capacity. As long as the measurements are carried out close to steady state and only a negligible temperature gradient exists within the sample, quantitative data can be gathered as a function of modulation frequency. Applied to the glass transition, such measurements permit the determination the kinetic parameters of the material. Based on either the hole theory of liquids or irreversible thermodynamics, the necessary equations are derived to describe the apparent heat capacity as a function of frequency.
basis of the holetheory of liquids and it has been found that the materials having large, Δ C p m /Δ S m exhibit large δ and low R c and such materials can form glasses more readily. It is further found that the material exhibiting large δ
's ( 1992 ) ‘structural holes’ theory (Morrison and Rabelotti 2009 ). That is, egos filling in structural holes are significantly more important at information diffusion. Later studies have started to apply the same framework for very knowledge intensive