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dc.contributor.authorSantiago Medina, F. J.
dc.contributor.authorTenorio Alfonso, Adrián 
dc.contributor.authorDelgado Sánchez, Juan Manuel 
dc.contributor.authorBasso, M. C.
dc.contributor.authorPizzi, A.
dc.contributor.authorCelzard, A.
dc.contributor.authorFierro, V.
dc.contributor.authorSánchez Carrillo, María Carmen 
dc.contributor.authorFranco Gómez, José María 
dc.date.accessioned2018-05-29T07:27:50Z
dc.date.available2018-05-29T07:27:50Z
dc.date.issued2018
dc.identifier.citationSantiago Medina, F. J., Tenorio Alfonso, A., Delgado Sánchez, C., Basso, M. C., Pizzi, A., Celzard, A., Fierro, V., Sánchez Carrillo, M.C., Franco Gómez, J. M. (2018). Projectable tannin foams by mechanical and chemical expansion. Industrial Crops and Products, 120, 90-96. https://doi.org/10.1016/j.indcrop.2018.04.048es_ES
dc.identifier.issn0926-6690
dc.identifier.urihttp://hdl.handle.net/10272/14804
dc.description.abstractA new formulation of quebracho tannin-based resin has been used to prepare bio-based rigid foams. The proposed foams were blown by using the simultaneous combination of two expansion methods by mechanical expansion as used for fire-fighting foams and by chemical expansion based on the release of water and other gases during the exothermal self-condensation of furfuryl alcohol. The combination of both methods allowed us to overcome certain limitations found in the preparation of foams exclusively based on mechanical expansion These were the resulting density (16% lower than that obtained by mechanical expansion) and the mechanical properties (compressive strength improved of about 11%). Resin chemorheology was characterized under stressed conditions using frequency and time sweeps as well as temperature ramps. The evolution of the linear viscoelastic functions during the reaction clearly showed the transition from viscous to strong gel-like behavior. The foaming and hardening processes were followed by the use of FOAMAT equipment and the resulting foams were characterized in terms of density (0.059–0.063 g/cm3), mechanical properties (compressive strength of 0.090–0.144 MPa) and thermal conductivity (0.046–0.048 W m−1 K−1).es_ES
dc.language.isoenges_ES
dc.publisherElsevieres_ES
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subject.otherTannines_ES
dc.subject.otherFoamses_ES
dc.subject.otherMechanical foaminges_ES
dc.subject.otherChemical foaminges_ES
dc.subject.otherRheologyes_ES
dc.subject.otherQuebrachoes_ES
dc.titleProjectable tannin foams by mechanical and chemical expansiones_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherversionhttps://doi.org/10.1016/j.indcrop.2018.04.048es_ES
dc.identifier.doi10.1016/j.indcrop.2018.04.048
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES


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