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Degradation of Poly(methyl methacrylate) Model Compounds at Constant Elevated Temperature Studied via High Resolution Electrospray Ionization Mass Spectrometry (ESI‐MS)
Author(s) -
Bennet Francesca,
Lovestead Tara M.,
Barker Philip J.,
Davis Thomas P.,
Stenzel Martina H.,
BarnerKowollik Christopher
Publication year - 2007
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200700330
Subject(s) - methyl methacrylate , mass spectrometry , chemistry , electrospray ionization , methacrylate , ethylene oxide , degradation (telecommunications) , poly(methyl methacrylate) , electrospray , polymer chemistry , analytical chemistry (journal) , organic chemistry , polymerization , chromatography , polymer , telecommunications , computer science , copolymer
The products of the thermal degradation at 95 °C over 10 months of ω ‐saturated and non‐saturated poly(methyl methacrylate) (pMMA) model compounds were identified with high accuracy via quadrupole ion trap and quadrupole ion trap‐time of flight (Q‐ToF) mass spectrometry. Analysis of the samples taken via these techniques indicated that degradation of vinyl terminated pMMA proceeds via the incorporation of oxygen via the formation of ethylene oxide type end groups, which subsequently rearrange under the expulsion of formaldehyde and 2‐oxo‐propionic acid methyl ester. The corresponding saturated model compounds were demonstrated to be stable over the same time period. The present findings highlight for the first time that poly(methyl methacrylate) degradation does not necessarily and exclusively proceed via radical intermediates.