Analysis of polymers using evolved-gas and direct-pyrolysis techniques
Date
1994Source Title
The Analyst
Print ISSN
0003-2654
Publisher
Royal Society of Chemistry
Volume
119
Issue
4
Pages
693 - 696
Language
English
Type
ArticleItem Usage Stats
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Abstract
Thermal analysis of polystyrene, poly(p-methylstyrene) and poly(α-methylstyrene) has been carried out using evolved-gas analysis by infrared and mass spectrometry, and direct-pyrolysis 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.