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Synthesis of polybenzoxazine precursors using thiols: Simultaneous thiol-ene and ring-opening reactions

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dc.contributor.authorBeyazkilic, Zeynep
dc.contributor.authorKahveci, Muhammet Übeydullah
dc.contributor.authorAydogan, BİNNUR
dc.contributor.authorKışkan, Barış
dc.contributor.authorYağcı, Yusuf
dc.contributor.institutionauthorTEMEL, BİNNUR
dc.date.accessioned2020-10-29T18:34:49Z
dc.date.available2020-10-29T18:34:49Z
dc.date.issued2012-10-01T00:00:00Z
dc.description.abstractA new class of polybenzoxazine precursors of combined molecular structure of benzoxazine in the open and ring form has been developed. Thermally curable benzoxazine networks were obtained by simultaneous photoinduced thiol-ene and Catalytic Opening of the Lateral Benzoxazine Rings by Thiols (COLBERT). The thiol-ene reactions were initiated by photolysis of a free radical photoinitiator, 2, 2-dimethoxy-2-phenyl acetophenone (DMPA), and the competing COLBERT reaction was triggered by thiol compound, 1,2-ethanedithiol, present in the reaction mixture. The extent of reactions was evaluated by conducting experiments both under UV irradiation and in dark using model benzoxazines. The precursor soft films (pre-P(B-ala-DTE)) were prepared by irradiating solutions of diallyl functional benzoxazine (B-ala), 1,2-ethanedithiol and DMPA. The obtained pre-P(B-ala-DTE) films were then cured through thermally activated ring opening reaction of remaining benzoxazine groups yielding a more rigid and tough film. Thermal and mechanical properties of the films were investigated by DSC, DMA and TGA and compared with a typical polybenzoxazine, P(B-ala). (c) 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012
dc.identifier.citationBeyazkilic Z., Kahveci M. Ü. , Aydogan B., Kışkan B., Yağcı Y., -Synthesis of polybenzoxazine precursors using thiols: Simultaneous thiol-ene and ring-opening reactions-, JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, cilt.50, ss.4029-4036, 2012
dc.identifier.doi10.1002/pola.26202
dc.identifier.scopus84865637798
dc.identifier.urihttp://hdl.handle.net/20.500.12645/25793
dc.identifier.wosWOS:000308093900013
dc.titleSynthesis of polybenzoxazine precursors using thiols: Simultaneous thiol-ene and ring-opening reactions
dc.typeArticle
dspace.entity.typePublication
local.avesis.id49d9328f-a56b-4dff-b4e4-75585c62567c
local.publication.isinternational1
relation.isAuthorOfPublicationd73c61cc-93fa-4fce-a294-f68e807cd50a
relation.isAuthorOfPublication.latestForDiscoveryd73c61cc-93fa-4fce-a294-f68e807cd50a
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