Analysis of polymers using evolved-gas and direct-pyrolysis techniques

Date

1994-12-01

Author

Fares, Mohammed M.
Yalcin, Talat
Hacaloğlu, Jale
Gungor, Atilla
Suzer, Sefik

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Thermal analysis of polystyrene, poly(p-methylstyrene) and poly(a-methylstyrene) has been carried out using evolved-gas analysis by infrared and mass spectrometry, and directpyrolysis analysis by mass spectrometric techniques. Evolved-gas analysis, both by infrared and mass spectrometry, reveals features due mainly to the corresponding monomers or stable, volatile, and low relative molecular mass degradation products. In direct-pyrolysis mass spectrometry, however, primary decomposition products and heavier fragments such as dimers and trimers can also be detected. The ion-temperature profiles of the corresponding monomer ions reveal information about the thermal stability of the polymers.

Subject Keywords

Polymer, Pyrolysis, Infrared technique, Mass spectrometry

URI

https://hdl.handle.net/11511/30544

Collections

Graduate School of Natural and Applied Sciences, Article