Py−GC/MS and MALDI−TOF/TOF CID Study of Polysulfone Fragmentation Reactions

Py−GC/MS and MALDI−TOF/TOF CID Study of Polysulfone Fragmentation Reactions

We report a combination of the evaporation-grinding MALDI sample preparation method, MALDI−TOF/TOF CID, and Py−GC/MS to examine the fragmentation mechanisms of polysulfone (PSF). MALDI−TOF/TOF CID studies yield a wealth of information about the mass, structure (linear or cyclic), and end-groups of s...

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Veröffentlicht in:Macromolecules 2009-04, Vol.42 (8), p.3005-3013
Hauptverfasser: Ellison, Sparkle T, Gies, Anthony P, Hercules, David M, Morgan, Stephen L
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Sprache:eng
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Applied sciences
Chemical reactions and properties
Degradation
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
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container_end_page 3013
container_issue 8
container_start_page 3005
container_title Macromolecules
container_volume 42
creator Ellison, Sparkle T
Gies, Anthony P
Hercules, David M
Morgan, Stephen L
description We report a combination of the evaporation-grinding MALDI sample preparation method, MALDI−TOF/TOF CID, and Py−GC/MS to examine the fragmentation mechanisms of polysulfone (PSF). MALDI−TOF/TOF CID studies yield a wealth of information about the mass, structure (linear or cyclic), and end-groups of species generated in the synthesis and fragmentation of these polymers. Additionally, Py−GC/MS experimental data are presented, for comparison of the multimolecular free radical reactions in pyrolysis with the unimolecular fragmentation reactions of MS/MS. TOF/TOF CID results indicate that linear PSF undergoes main chain fragmentation at characteristic locations. However, cyclic species produce “unexpected” fragment ions, presumably due to their different gas-phase configuration and the multiple main-chain breaks required to generate CID spectra. These results are supported by Py−GC/MS data and are consistent with our proposed degradation mechanisms.
doi_str_mv 10.1021/ma900161y
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subjects Applied sciences
Chemical reactions and properties
Degradation
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
title Py−GC/MS and MALDI−TOF/TOF CID Study of Polysulfone Fragmentation Reactions
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