2.2.8. P2.2.9. Differential scanning calorimetry (DSC)
Small amounts of samples (between 10 and 12 mg) were accurately weighed (XP205 DeltaRange® analytical balance, Mettler Toledo, Giessen, Germany) in aluminum pans, hermetically sealed and analyzed. The DSC analysis was performed using a Mettler DSC 820 (Mettler Toledo, Giessen, Germany). An empty pan was used as the reference sample. The samples were heated from room temperature (25 °C) to 110 °C, at a heating rate of 5 K/min to compare the endothermic transition enthalpies of the test and reference samples. All samples were measured in duplicate at least.