Tg 209 f1 iris thermobalance

Specimens with the weights of 2.00–10.00 mg (analytical balance A&D GH-202) were tested with a DSC 204 F1 Phoenix^® differential scanning calorimeter, TG 209 F1 Iris^® thermobalance, and STA 409 PC Luxx^® simultaneous thermal analyzer coupled with QMS 403C Aëolos^® quadrupole mass spectrometer (NETZSCH, Selb, Germany). Measurements were taken in aluminum (DSC) and alumina (TG, STA-MS) crucibles (lid with a hole) under dry nitrogen flow (20–70 mL·min⁻¹) with a heating rate of 10 °C·min⁻¹. All instruments were previously calibrated for temperatures and enthalpies of phase transitions of pure (99.999%) standard substances in compliance with ASTM Practices E967, E968, E1582, and E2253: cyclohexane, Hg, Ga, benzoic acid, In, Sn, Bi, Pb, Zn, CsCl—for DSC; In, Sn, Bi, Zn, Al, Ag, Au—for TG and STA. Calcium oxalate monohydrate was used for validation of thermobalances. Mean estimated temperature and mass determination errors were 0.3 °C and 0.2%. Experimental data were processed in NETZSCH Proteus^® Software according to ASTM E794, E2550 and ISO 11357-1.

Thermogravimetric analyses (TGA) were carried out using a TG 209 F1 Iris thermobalance (NETZSCH, Bayern, Germany). The measurements were made in a helium flow in a temperature range of 30–450 °C, using a heating rate of 10 °C min^–1 and a gas flow rate of 60 mL min^–1. Open Al crucibles were used for measurements.