2.5. Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC)

Thermogravimetric analysis (TGA) was performed with the TGA/DSC 2 STAR System thermogravimetric analyzer equipment, Mettler Toledo, USA. Using a nitrogen purge with a flow rate of 60 mL/min and 10 ± 0.5 mg of the sample at a heating rate of 10 °C/min, from 30 °C to 500 °C.

Differential scanning calorimetry (DSC) analysis was carried out using a TA Q-2000 equipment The samples were subjected to heating–cooling–heating cycles, at a rate of 20 °C/min, a temperature range of 0 °C–200 °C, and with nitrogen purge (50 mL/min). For the evaluation of thermal properties, the results of the second heating run were used because of the elimination of the thermal history of the test specimens. In this analysis 10 mg of the sample.