Synthesis and characterization of bio-based benzoxazines derived from thymol

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buir.contributor.authorErtaş-Doğan, Yelda
buir.contributor.authorSatılmış, Bekir
buir.contributor.authorUyar, Tamer
buir.contributor.orcidUyar, Tamer|0000-0002-3989-4481
dc.citation.epage47371-1en_US
dc.citation.issueNumber17en_US
dc.citation.spage47371-10en_US
dc.citation.volumeNumber136en_US
dc.contributor.authorErtaş-Doğan, Yeldaen_US
dc.contributor.authorSatılmış, Bekiren_US
dc.contributor.authorUyar, Tameren_US
dc.date.accessioned2019-02-21T16:09:55Z
dc.date.available2019-02-21T16:09:55Z
dc.date.issued2019en_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.departmentNanotechnology Research Center (NANOTAM)en_US
dc.description.abstractIn the present study, bio-based benzoxazine resins were synthesized from bio-based phenolic compound; thymol, and three different amines; ethylamine, aniline and 1,6-diaminohexane, and paraformaldehyde by solvent-free condensation reaction. The chemical structures of bio-based benzoxazines; T-ea (thymol, ethylamine), T-a (thymol, aniline), and T-dh (thymol, 1,6-diaminohexane) were characterized by proton nuclear magnetic resonance spectroscopy, Fourier transform infrared (FTIR) spectroscopy, elemental analysis, and high-resolution mass spectrometry. The curing studies of T-ea, T-a, and T-dh bio-based benzoxazines were performed by stepwise thermal treatment at 150, 175, 200, 225, and 250 °C. The polymerization (ring-opening and crosslinking reactions) of T-ea, T-a, and T-dh bio-based benzoxazines was investigated by FTIR spectroscopy. Cure analysis was conducted using differential scanning calorimetry and the changes in thermal properties of the T-ea, T-a, and T-dh bio-based benzoxazine resins and their corresponding thermally crosslinked polybenzoxazines PT-ea, PT-a, and PT-dh were studied by thermogravimetric analyzer. The results indicated that all the thymol-based polybenzoxazines have shown enhanced thermal stability.
dc.embargo.release2020-05-05en_US
dc.identifier.doi10.1002/app.47371
dc.identifier.issn0021-8995
dc.identifier.urihttp://hdl.handle.net/11693/50483
dc.language.isoEnglish
dc.publisherJohn Wiley and Sons
dc.relation.isversionofhttps://doi.org/10.1002/app.47371
dc.source.titleJournal of Applied Polymer Scienceen_US
dc.subjectBio-based benzoxazineen_US
dc.subjectPolybenzoxazinesen_US
dc.subjectSolventless synthesisen_US
dc.subjectThermal propertiesen_US
dc.subjectThymolen_US
dc.titleSynthesis and characterization of bio-based benzoxazines derived from thymolen_US
dc.typeArticleen_US

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Institute of Materials Science and Nanotechnology (UNAM)
Nanotechnology Research Center (NANOTAM)