Thermal degradation characteristics of polysulfones with benzoxazine end groups

► Thermal degradation behaviors of thermosets were investigated by DP-MS. ► Polysulphone–polybenzoxazine networks were prepared by two different methods. ► Polymerization of end groups increased stability of polysulfone and polybenzoxazine. Thermal degradation behaviors of phenol and benzoxazine end...

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Bibliographic Details
Published in:Journal of analytical and applied pyrolysis 2012-03, Vol.94, p.146-152
Main Authors: Orhan, Tugba, Ates, Sahin, Hacaloglu, Jale, Yagci, Yusuf
Format: Article
Language:English
Subjects:
aniline
mass spectrometry
phenol
Polybenzoxazine
polymerization
Polysulfone
pyrolysis
Pyrolysis mass spectrometry
Thermal degradation
thermal stability
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Summary:► Thermal degradation behaviors of thermosets were investigated by DP-MS. ► Polysulphone–polybenzoxazine networks were prepared by two different methods. ► Polymerization of end groups increased stability of polysulfone and polybenzoxazine. Thermal degradation behaviors of phenol and benzoxazine end-capped polysulfone macromonomers (PSU-OH and PSU-P-a) and pre-cured PSU-P-a in the absence and presence of aniline and phenol based benzoxazine monomer (P-a) were investigated via pyrolysis mass spectrometry. A significant increase in thermal stability of both polysulfone and polybenzoxazine chains upon polymerization of benzoxazine end groups was determined compared to phenol-ended polysulfones and aniline based monofunctional polybenzoxazine. Thermal stability of both chain segments depends on concentration of benzoxazine monomer and the chain length of the polysulfone chain.
ISSN:0165-2370
1873-250X
DOI:10.1016/j.jaap.2011.12.001