Synthesis of Schiff base-containing benzoxazine derivatives

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dc.contributor.authorTimur, Mahir
dc.contributor.authorNur, Yusuf
dc.contributor.authorSikar, Huseyin
dc.date.accessioned2024-09-18T20:13:33Z
dc.date.available2024-09-18T20:13:33Z
dc.date.issued2019
dc.departmentHatay Mustafa Kemal Üniversitesien_US
dc.description.abstractThe excellent chemical and physical properties of benzoxazine resins and the functionality of Schiff bases were combined in one compound's structure, creating newly designed benzoxazine derivatives that can form complexes with metals. The new type of benzoxazine monomer was synthesized via the ring-closure reaction of formaldehyde, aniline, and three newly designed Schiff bases. The presence of the Schiff base in the molecular structure of these novel benzoxazine monomers enables them to trap metals as the functional compounds, like Cu, from a solution. Thermally initiated polymerization occurs at a lower temperature by the formation of intermolecular and intramolecular hydrogen bonds between imine, oxazine, Schiff base hydroxyl groups, and the newly generated hydroxyl groups. The thermal behavior of the bisbenzoxazine monomers was investigated with Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and differential scanning calorimetry, and then they were cured at 120, 180, and 230 degrees C. According to the magnetic susceptibility, FTIR, scanning electron microscopy with energy dispersive X-ray spectroscopy, TGA, and microwave plasma atomic emission spectroscopy results, it is shown that Cu(II) complexes of the compounds were also succesfully synthesized, and they proved to be successful in catching metal. This is due to the functionality of Schiff bases forming the metal complexation in the compounds. The poly(bisbenzoxazine)s also showed high limiting oxygen index (31-37), low ring-opening temperature (150-190 degrees C), high char yield (35%-49%), and excellent thermal stability, due to the highly crosslinked nature of the polymers. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47908.en_US
dc.description.sponsorshipMustafa Kemal University Scientific Research Projects (MKU BAP) [15421]en_US
dc.description.sponsorshipThis study was financially supported by [GS] Mustafa Kemal University Scientific Research Projects (MKU BAP)[/GS] with project number [GN] 15421[/GN]. The authors also thank Prof. Dr. Cahit Demetgul for the magnetic susceptibility measurements.en_US
dc.identifier.doi10.1002/app.47908
dc.identifier.issn0021-8995
dc.identifier.issn1097-4628
dc.identifier.issue35en_US
dc.identifier.scopus2-s2.0-85065742700en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.1002/app.47908
dc.identifier.urihttps://hdl.handle.net/20.500.12483/9254
dc.identifier.volume136en_US
dc.identifier.wosWOS:000470957200004en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherWileyen_US
dc.relation.ispartofJournal of Applied Polymer Scienceen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectcrosslinkingen_US
dc.subjectflame retardanceen_US
dc.subjectresinsen_US
dc.subjectring-opening polymerizationen_US
dc.subjectthermosetsen_US
dc.titleSynthesis of Schiff base-containing benzoxazine derivativesen_US
dc.typeArticleen_US

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