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Investigation of polymers by a novel analytical approach for evolved gas analysis in thermogravimetry.
J. Therm. Anal. Calorim. 105, 859-866 (2011)
A newly developed measurement technique for evolved gas analysis in thermogravimetry, viz. a thermo balance coupled to comprehensive gas chromatography/single photon ionization mass spectrometry (TG-GC x SPIMS), has been applied to investigate the thermal degradation of two polymers (polycarbonate (PC) blended with ABS and PVC). This detection method provides a two-dimensional analysis of the evolved gaseous products. TG relevant data is obtained as well as an improved resolution power to separate isobaric molecular structures without losing any fraction of the samples. In addition, this solution is not associated with any extension of the measurement time. The assignment of the substance pattern to distinct species is improved compared to solely using MS without a preceding separation step. Furthermore, hitherto undetected compounds when compared to applying TG-SPIMS without GC such as benzonitrile and its methylated derivatives have been found in the evolved gases from the thermal degradation of PC/ABS blend. Finally, a first estimation of the limit of detection has been carried out, yielding 400 ppt for styrene and 500 ppt for toluene from the thermal decomposition of PC/ABS blend.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Evolved gas analysis; Mass spectrometry; Gas chromatography; Photo ionization; Polymers; Single-photon Ionization; Flight Mass-spectrometry; Tg-gc-ms; Thermal-decomposition; Organic-compounds; Pyrolysis; Degradation; Chromatography; Identification; Plastics
ISSN (print) / ISBN
1388-6150
e-ISSN
1588-2926
Quellenangaben
Volume: 105,
Issue: 3,
Pages: 859-866
Publisher
Springer
Publishing Place
Dordrecht
Non-patent literature
Publications
Reviewing status
Peer reviewed