DSC/thermal analysis: determination of glass transission temperature

In the glass transition temperature range, there is a sudden change in the heat capacity cp, which is usually accompanied by a sudden change in the physical and technological properties. For example, some polymers suddenly become hard and fragile below the glass transition temperature (e.g. PP), while others can be thermoformed very well when the glass transition temperature is exceeded (e.g. PET). Measurement by DSC is smart, but not feasible on all polymers. We would be happy to advise you.