Relaxation times of bisphenol A polycarbonate around the glass transition temperature are estimated using the combination of differential scanning calorimetry (DSC) and thermostimulated depolarization currents (TSDC). These measurements are performed using samples with different thermal histories below and above the vitrification transformation. This protocol enables the extension of the range of equilibrium relaxation times measured by dielectric spectroscopy. By this mean we may recalculate the values of the Kauzmann temperature and fragility index.
- Differential scanning calorimetry
- Glass transition
- Thermostimulated currents
ASJC Scopus subject areas
- Condensed Matter Physics
- Physical and Theoretical Chemistry