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dc.contributor.authorCobos Zamarreño, Mónica ORCID
dc.contributor.authorPagalday, E.
dc.contributor.authorPuyadena Jauregi, Maddalen
dc.contributor.authorCabido, X.
dc.contributor.authorMartín Alberdi, María Dolores
dc.contributor.authorMugica Iztueta, Miren Agurtzane
dc.contributor.authorIrusta Maritxalar, María Lourdes
dc.contributor.authorGonzález Vives, Alba
dc.date.accessioned2023-04-25T17:49:06Z
dc.date.available2023-04-25T17:49:06Z
dc.date.issued2023-01
dc.identifier.citationProgress in Organic Coatings 174 : (2023) // Article ID 107278es_ES
dc.identifier.issn0300-9440
dc.identifier.issn1873-331X
dc.identifier.urihttp://hdl.handle.net/10810/60932
dc.description.abstractWaterborne polyurethane (WPU) dispersions were prepared for flame retardant coatings. Specifically, alkoxysilane-capped polycaprolactone-based WPUs were synthesized employing the acetone process, and Casein, as a green and sustainable flame retardant additive, was added by two different methods (in situ and ex situ). These two strategies made possible to evaluate the effect of the Polyurethane/Casein interaction in the final properties of the dispersions and films. FTIR and solid-state 29Si NMR, confirmed the formation of the siloxane network during film generation process. The addition of Casein during the synthesis (in situ) resulted in a covalent bonding between the polyurethane and Casein, which significantly increased the particle size. However, the incorporation after phase inversion of the WPU (ex situ), did not change the particle size. Tensile tests revealed that the covalent bond promoted an increase in the brittleness of the material compared to ex situ approach due to a better dispersion of the Casein in the system. TGA results showed that Casein increased the thermal stability of all the coatings, especially of those obtained by the ex situ route. Moreover, and according to the microscale combustion calorimeter (MCC) and vertical burning test (UL-94) measurements Casein delayed the combustion of the material. Consequently, due to their characteristics, these Casein-WPU dispersions could potentially be used as combustion retardant coatings, where good physicochemical properties are essential for effective performance.es_ES
dc.description.sponsorshipThe funding received from University of the Basque Country (GIU19/077, predoctoral grant of M. Puyadena and postdoctoral grant of M. Cobos) and the Basque Government (IT1313-19, PIBA20/16) is gratefully acknowledged.es_ES
dc.language.isoenges_ES
dc.publisherElsevieres_ES
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subjectwaterborne polyurethanees_ES
dc.subjectcaseines_ES
dc.subjectcovalent linkagees_ES
dc.subjectgreen fire retardantes_ES
dc.titleWaterborne hybrid polyurethane coatings containing Casein as sustainable green flame retardant through different synthesis approacheses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.rights.holder© 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by- nc-nd/4.0/)es_ES
dc.rights.holderAtribución-NoComercial-SinDerivadas 3.0 España*
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0300944022005756?via%3Dihubes_ES
dc.identifier.doi10.1016/j.porgcoat.2022.107278
dc.departamentoesPolímeros y Materiales Avanzados: Física, Química y Tecnologíaes_ES
dc.departamentoeuPolimero eta Material Aurreratuak: Fisika, Kimika eta Teknologiaes_ES


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© 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-
nc-nd/4.0/)
Except where otherwise noted, this item's license is described as © 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by- nc-nd/4.0/)