Stare 2 system

The samples’ thermal stability and degradation were analyzed by TGA on a STAR^e 2 System by Mettler Toledo in the temperature range between 25 °C and 600 °C with a heating rate of 10 °C/min and sample masses between 15–20 mg. The uncertainty of the instrument’s balance is reported to be 0.1 μg. For each sample, a blank measurement of the empty crucible was performed with the same method as described above for correct baseline subtraction. The starting degradation temperature was typically defined as the earliest temperature for which mass losses ≥ 5% were observed. Similarly, the end temperature degradation was marked as the earliest temperature for which the mass loss was ≥99%. The results were evaluated on Mettler Toledo STAR^e Version 14 software.

The samples’ degradation temperatures were measured on a TGA STAR^e 2 System and a TGA/DSC 3+ by METTLER TOLEDO equipped with autosamplers in the temperature range between 25 and 600 °C with a heating rate of 10 K/min and sample masses between 15 and 20 mg. The uncertainty of the instrument’s balance is reported to be ±0.1 μg. For each sample list and method, a blank measurement of the empty crucible was performed with the same method as described above for baseline subtraction. The starting degradation temperature was typically defined as the earliest temperature for which mass losses ≥ 5% were observed. The end degradation temperature was defined as the earliest temperature for which the mass loss was ≥99%, and for which the mass loss curve in a plot of mass (mg) versus temperature (°C) was flat. The software used to analyze the data was the STAR^e software version 16.20.