2.5. Thermogravimetric Analysis

TGA measurements were carried out using a TA Instruments TGA Q5000 (TA Instruments, New Castle, DE, USA) device. Samples of the powdered resin of about 5 mg were weighed in platinum vessels. Nitrogen gas was used as flow medium with a flow rate of 25 mL min⁻¹. The applied temperature profile ranged from 30 to 250 °C with a linear temperature increase rate of 2 °C min⁻¹. All samples were measured twice. Weight loss curves were recorded and analyzed (differentials) using TA Instruments Universal Analysis 2000 package.