This study shows the use of the GERSTEL MPS 2/TDU/CIS with pyrolysis module for generating simulated thermal gravimetric-mass spectrometry data (TGA-MS) of polymer samples. This mode of operation is also referred to as evolved gas analysis (EGA).

For EGA analysis, a short piece of uncoated capillary is attached from the GC inlet to the mass spectrometer. A relatively slow temperature ramp is run similar to that used for actual TGA analysis. The total ion chromatogram can be plotted as a function of temperature to produce simulated TGA-MS data. The mass spectral data is used to identify degradation products at various temperatures.

Several types of polymers are examined in this study. Simulated TGA-MS data is compared with actual TGA data.

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Gerstel PYRO

Gerstel PYRO

Automated Pyrolysis GERSTEL PYRO

The GERSTEL PYRO enables highly flexible and efficient automated pyrolysis of solids and liquids at up to 1000C combined with determination in a GC/MS system of the thermal decomposition products. If required, thermal desorption and pyrolysis of the same sample can be performed in sequence, enabling the analyst to obtain cleanest possible pyrogram and the maximum amount of information in the shortest possible time. Some key areas in which the PYRO is used are production quality control; product development; and forensic science.

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