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- Comparisons of polymer types or different formulations of the sample polymer;
- Quantification and identification of organic in solids, sludges, and deposits;
- Analysis of heat activated chemical reactions to help understand the chemical process through analysis of off-gases.
Thermogravimetric analysis (TGA) is a technique which measures the weight loss of a substance as it is heated at a controlled rate or held at a given temperature for a specified time. The purge gas which blankets the sample can also be controlled (typically inert argon or air). This technique is very useful when the weight loss data is needed at particular temperatures or times, as compared to loss on drying or loss on ignition data where the total weight loss is determined up to a predefined temperature.
- Determination of percent residual water, solvents, or reactants;
- Determination of degree of hydration;
- Thermal stability of oils, greases, polymers, and polymer additives;
- Thermal behavior of sludges and other unknowns.
TGA-FTIR is a technique whereby the effluent gases from the weight loss events in the TGA are carried through a special interface and analyzed by FTIR. This enables the weight loss data at a given temperature to be correlated with identification of the components evolved.