Thermal analysis is a very versatile analytical technique that can be used to characterise materials and gain valuable information on chemical reactions. This flexibility makes thermal analysis the most popular technique we offer.
Thermal Analysis (TGA; TGA/FTir; STA/MS)
Analysis of reactions by monitoring sample weight and/or heat flow against time and temperature
Three thermo-gravimetric analysers are available in the ERI Analytical Laboratory. All three instruments are fitted with automatic gas switching accessories to change the atmosphere in the furnace quickly and repeatedly, whilst one TGA can be connected to the FTir spectrometer via a heated transfer line for analysis of the gases evolved during the experimental run.
A Mettler Toledo TGA/DSC 1 system allows simultaneous investigation of the weight change and the heat flow to/from the sample. It can be connected to a mass spectrometer for evolved gas analysis. The auto-sampler makes it ideal for routine analysis of sample batches. Please note that it is not a DSC and that the heat flow signal is only useful for detecting relatively large enthalpy changes. It is approximately 50x less sensitive than a dedicated differential scanning calorimeter so should not be used where a DSC is needed, for example in the determination of glass transition temperatures.
Some recent example applications of thermal analysis include proximate analysis of solid fuels, investigation of advanced adsorbent materials for carbon dioxide capture from flue gases and investigation of the properties of novel catalysts.