Measurement of the thermal glass transition of polystyrene in a cooling rate range of more than six decades

The thermal glass transition of polystyrene (PS) is measured in a range between 0.003 K/s and 4000 K/s using a conventional DSC 1 and a Flash DSC 1 from Mettler-Toledo. The dependency between the cooling rate and the glass transition temperature is in accordance with the Vogel-Fulcher-Tammann-Hesse (VFTH) equation, as it is usually used for description of the frequency-temperature relationship of the dynamic glass transition (or main relaxation process). Furthermore we discuss the influence of the thermal lag on the measurement and develop correction methods. (C) 2014 Elsevier B.V. All rights reserved.