Investigation of polymerization of benzoxazines and thermal degradation characteristics of polybenzoxazines via direct pyrolysis mass spectrometry

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buir.contributor.authorUyar, Tamer
buir.contributor.orcidUyar, Tamer|0000-0002-3989-4481
dc.citation.epage1541en_US
dc.citation.issueNumber10en_US
dc.citation.spage1532en_US
dc.citation.volumeNumber61en_US
dc.contributor.authorBagherifarm, S. B.en_US
dc.contributor.authorUyar, Tameren_US
dc.contributor.authorIshida, H.en_US
dc.contributor.authorHacaloglu, J.en_US
dc.date.accessioned2015-07-28T12:01:14Z
dc.date.available2015-07-28T12:01:14Z
dc.date.issued2012-10en_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.description.abstractPolymerization of benzoxazines and thermal degradation mechanisms of polybenzoxazines were investigated using the direct pyrolysis mass spectrometry (DP-MS) technique. The benzoxazine structures were based on phenol and aniline and on bisphenol-A and methylamine or aniline. Polymerizations of the benzoxazines were carried out by curing them at elevated temperatures without addition of initiator or catalyst. DP-MS data showed the presence of chains generated by opposing polymerization reaction pathways indicating quite complex structures for the polybenzoxazines under investigation. Thermal decomposition of polybenzoxazines was started by the cleavage of methylamine or aniline linkages. It was determined that polybenzoxazines based on phenol were more stable than the corresponding bisphenol-A-based polybenzoxazines, while those based on methylamine were more stable than the corresponding polybenzoxazines incorporating aniline. Thus, it can be concluded that the presence of bulky groups decreased the extent of crosslinking which in return decreased the thermal stability. © 2012 Society of Chemical Industry.en_US
dc.identifier.doi10.1002/pi.4241en_US
dc.identifier.issn0959-8103
dc.identifier.urihttp://hdl.handle.net/11693/12389
dc.instituteInstitute of Materials Science and Nanotechnologyen_US
dc.language.isoEnglishen_US
dc.publisherWileyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1002/pi.4241en_US
dc.source.titlePolymer Internationalen_US
dc.subjectBenzoxazineen_US
dc.subjectPolybenzoxazineen_US
dc.subjectCuringen_US
dc.subjectThermal degradationen_US
dc.subjectPyrolysis mass spectrometryen_US
dc.titleInvestigation of polymerization of benzoxazines and thermal degradation characteristics of polybenzoxazines via direct pyrolysis mass spectrometryen_US
dc.typeArticleen_US

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