1 Amorphous polyethylene terephthalate
Figure 3 shows a measurement example of a polyethylene terephthalate (PET) of amorphous
by TM-DSC. Shifting due to glass transition at 75 to 82°C, exothermic peak from cold
crystallization at 132°C, and endothermic peak from melting at 256°C are observed in the Total
Heat Flow. Glass transition and melting are observed in the heat capacity component; and cold
crystallization and melting are observed in the kinetic component. Accordingly, phenomena
measured by DSC are divided into a heat capacity component and kinetic component. Melting
phenomena are shown to contain both components.