Thermal analysis is a branch of
materials science where the properties of materials are studied as they change with
temperature. Several methods are commonly used – these are distinguished from one another by the property which is measured:
Simultaneous Thermal Analysis (STA) generally refers to the simultaneous application of
Thermogravimetry (TGA) and
differential scanning calorimetry (DSC) to one and the same sample in a single instrument. The test conditions are perfectly identical for the TGA and DSC signals (same atmosphere, gas flow rate, vapor pressure of the sample, heating rate, thermal contact to the sample crucible and sensor, radiation effect, etc.). The information gathered can even be enhanced by coupling the STA instrument to an Evolved Gas Analyzer (EGA) like
Fourier transform infrared spectroscopy (FTIR) or mass spectrometry (MS).