2.2.2. Thermogravimetric Analysis (TGA)

TGA was performed for natural granite, vegetable polyurethane and ASPU in a TGA-Q5000 TA Instruments, New Castle, DE, USA. The analysis was done with approximately 10 mg of each over a 30 to 935 ◦C temperature range with a heating rate of 10 ◦C/min, using an air flow of 60 mL/min during the test.
