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dc.contributor.authorHernández Ramos, Fabio ORCID
dc.contributor.authorGonzález Alriols, María
dc.contributor.authorAntxustegi Bengoetxea, Miren Mirari
dc.contributor.authorLabidi Bouchrika, Jalel
dc.contributor.authorErdocia Iriarte, Xabier
dc.date.accessioned2023-12-19T14:01:26Z
dc.date.available2023-12-19T14:01:26Z
dc.date.issued2023-08
dc.identifier.citationInternational Journal of Biological Macromolecules 247 : (2023) // Article ID 125855es_ES
dc.identifier.issn0141-8130
dc.identifier.issn1879-0003
dc.identifier.urihttp://hdl.handle.net/10810/63419
dc.description.abstractBio-polyols, produced by liquefying lignin with polyhydric alcohols, offer a promising alternative to conventional polyols for polyurethane production. To enhance the sustainability on the production of these bio-polyols, this study proposes the use of crude glycerol and microwave-assisted liquefaction as substitutes for conventional methods and commercial glycerol. This approach reduces the energy requirements of the reaction while also adding value to this by-product. The synthesis of bio-polyols with suitable properties to produce elastic and rigid polyurethane was carried out using previously optimised reaction conditions. Organosolv lignins obtained from Eucalyptus globulus and Pinus radiata were employed, using polyethylene glycol and crude glycerol as solvents and sulphuric acid as a catalyst. Several parameters of the bio-polyols were analysed, including hydroxyl number (IOH), acid number (An), and functionality (f), suggesting that the bio-polyols were suitable for polyurethane synthesis. Bio-polyols formulated to produce rigid polyurethanes exhibited IOH values of 554 and 383 (mg KOH/g), An values of 1.91 and 4.21 (mg KOH/g), and functionalities of 4.16 and 3.14 for Eucalyptus globulus and Pinus radiata lignin. In the case of bio-polyols for elastic polyurethanes, the values were 228 and 173 (mg KOH/g) (IOH), 20.94 and 25.09 (mg KOH/g) (An), and functionalities of 3.51 and 2.08.es_ES
dc.description.sponsorshipThe authors would like to acknowledge the financial support of the University of the Basque Country (project COLAB20/04). F. Hernández-Ramos would like to acknowledge the Grant received from the Environmental Department of the Diputación Foral de Gipuzkoa. The authors thank SGIker (UPV/EHU/ERDF, EU) for their technical and human support.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.subjectbio-polyoles_ES
dc.subjectorganosolv lignines_ES
dc.subjectcrude glyceroles_ES
dc.subjectliquefactiones_ES
dc.titleValorisation of crude glycerol in the production of liquefied lignin bio-polyols for polyurethane formulationses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.rights.holder© 2023 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/S0141813023027502es_ES
dc.identifier.doi10.1016/j.ijbiomac.2023.125855
dc.departamentoesIngeniería química y del medio ambientees_ES
dc.departamentoesMatemática aplicadaes_ES
dc.departamentoeuIngeniaritza kimikoa eta ingurumenaren ingeniaritzaes_ES
dc.departamentoeuMatematika aplikatuaes_ES


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© 2023 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 © 2023 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/)