6. Glass transition
6.1 Calorimetric evidence of glass transition
Figure 13 shows the evolution of the specific heat C p of indomethacin during melting by heating a crystal and during supercooling, by cooling the liquid. The increase in C p after melting (at T m ) is associated with the dynamic release of the large-amplitude molecular degrees of freedom that characterize the liquid state. By cooling the liquid quickly enough (at a rate of around 10°C/min) below T m , crystallization can...
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Glass transition
Amorphous configurational state: energy landscape
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