Thermal analysis of polyethylene glycol: evolved gas analysis with ion attachment mass spectrometry

Chemosphere
Yuki KitaharaToshihiro Fujii

Abstract

The thermal decomposition of polyethylene glycol was investigated by using a technique combining evolved gas analysis (time-resolved pyrolysis) with ion-attachment mass spectrometry. This technique allows the detection of intact pyrolysis products and, therefore, offers the opportunity for direct real-time monitoring of thermal by-products. Unstable products can thus be detected; for instance, many highly reactive organic peroxides, such as CH(3)OOH and HOCH(2)OOH, were found in this study. Classification analysis revealed 10 major compositional formulas among the product species: C(n)H(2)(n)(+2)O, C(n)H(2)(n)(+2)O(2), C(n)H(2)(n)(+2)O(3), C(n)H(2)(n)(+2)O(4), C(n)H(2)(n)(+2)O(5), C(n)H(2)(n)(+2)O(6), C(n)H(2)(n)(+2)O(7), C(n)H(2)(n)O, C(n)H(2)(n)O(2), and HO(CH(2)CH(2)O)(n)H ethylene glycol oligomers. The Li(+) ion adduct mass spectra showed a characteristic profile in terms of both the appearance of unique components and the distribution of pyrolysis products. Among the products of the thermal decomposition of PEG, formaldehyde (HCHO) and organic peroxides were particularly interesting. Formaldehyde, one of the 10 most abundant products, is a known human carcinogen. The detection of peroxides suggests that they may form durin...Continue Reading

References

Aug 27, 2009·The Journal of Physical Chemistry. B·Andrei ChoukourovHynek Biederman
Apr 2, 2010·Physical Chemistry Chemical Physics : PCCP·Seiji TakahashiToshihiro Fujii
Jul 16, 2010·Chemosphere·Yuki KitaharaToshihiro Fujii
Aug 27, 2010·Rapid Communications in Mass Spectrometry : RCM·Seiji TakahashiToshihiro Fujii
Mar 1, 2011·Bioresource Technology·Pushkaraj R PatwardhanRobert C Brown

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Citations

Jan 18, 2017·Scientific Reports·Miguel Vazquez-PufleauPratim Biswas

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