Enhanced Conductivity of Chitosan Composite Membranes With Fractionated Kraft and Organosolv Lignin

[EN] Different bio-based chitosan composites containing kraft or organosolv lignin were subjected to successive solvent extractions (ethyl acetate followed by ethanol) and then modified by immersion in a sulfuric acid solution to obtain membranes with suitable conductive properties. The materials we...

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Autores: Wolf, Mark Henning|||0000-0003-3033-6616, Ribes-Greus, A.|||0000-0003-2460-8291, Izaguirre, Nagore, Labidi, Jalel
Formato: artículo
Fecha de publicación:2025
País:España
Recursos:Universitat Politècnica de València (UPV)
Repositorio:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglés
OAI Identifier:oai:riunet.upv.es:10251/220215
Acesso em linha:https://riunet.upv.es/handle/10251/220215
Access Level:acceso abierto
Palavra-chave:Chitosan composites membranes
Organosolv lignin
Fourier-transform infrared (FTIR)
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spelling Enhanced Conductivity of Chitosan Composite Membranes With Fractionated Kraft and Organosolv LigninWolf, Mark Henning|||0000-0003-3033-6616Ribes-Greus, A.|||0000-0003-2460-8291Izaguirre, NagoreLabidi, JalelChitosan composites membranesOrganosolv ligninFourier-transform infrared (FTIR)[EN] Different bio-based chitosan composites containing kraft or organosolv lignin were subjected to successive solvent extractions (ethyl acetate followed by ethanol) and then modified by immersion in a sulfuric acid solution to obtain membranes with suitable conductive properties. The materials were characterized by Fourier-transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), oxidative-stability testing, water-uptake measurements, electron and proton conductivity, and H₂/O₂ fuel-cell performance, enabling correlations between composite structure and properties. Sulfuric-acid treatment introduced sulfate groups that promote ionic interactions between polymer chains, improving resistance to radical oxidative degradation. The dry modified biocomposites exhibited very low electronic conductivity (10⁻¹⁴–10⁻¹⁰ S·cm⁻¹) over the −10 to 60 °C range, indicating potential as electrical insulators. Acid modification also disrupted crystallinity and increased hydrophilicity, leading to higher water uptake. Consequently, proton transport was enhanced, resulting in increased proton conductivity and higher power output in an H₂/O₂ fuel cell. Composites containing organosolv lignin fractions showed stronger affinity for sulfate groups and, accordingly, higher oxidative stability, greater water uptake, and improved proton conductivity compared with kraft-lignin-based composites.This work was supported by Ministerio de Ciencia, Innovación y Universidades, PRTR- C17.11. Conselleria d'Educació, Investigació, Cultura iEsport, MFA/2022/041. Ministerio de Ciencia, Innovación y Universidades, FPU21/00853. Eusko Jaurlaritza, PIF19-183John Wiley & Sons Instituto Universitario de Investigación de Tecnología de los Materiales de la UPVDepartamento de Máquinas y Motores TérmicosEscuela Técnica Superior de Ingeniería Aeroespacial y Diseño IndustrialDepartamento de Ingeniería Química y NuclearEscuela Técnica Superior de Ingeniería IndustrialEusko JaurlaritzaEuropean CommissionGeneralitat ValencianaMinisterio de UniversidadesUniversitat Politècnica de ValènciaRepositorio Institucional de la Universitat Politècnica de València Riunet20252025-04-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://riunet.upv.es/handle/10251/220215reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)InglésengGeneralitat Valenciana https://doi.org/10.13039/501100003359 MFA%2F2022%2F041 Diseño y validación de materiales innovadores para su desarrollo como electrolitos de pilas de combustible de intercambio protónico en vehículosEusko Jaurlaritza Eusko Jaurlaritza PIF19-183Ministerio de Universidades MIU FPU21%2F00853open accesshttp://purl.org/coar/access_right/c_abf2Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:riunet.upv.es:10251/2202152026-06-13T07:49:27Z
dc.title.none.fl_str_mv Enhanced Conductivity of Chitosan Composite Membranes With Fractionated Kraft and Organosolv Lignin
title Enhanced Conductivity of Chitosan Composite Membranes With Fractionated Kraft and Organosolv Lignin
spellingShingle Enhanced Conductivity of Chitosan Composite Membranes With Fractionated Kraft and Organosolv Lignin
Wolf, Mark Henning|||0000-0003-3033-6616
Chitosan composites membranes
Organosolv lignin
Fourier-transform infrared (FTIR)
title_short Enhanced Conductivity of Chitosan Composite Membranes With Fractionated Kraft and Organosolv Lignin
title_full Enhanced Conductivity of Chitosan Composite Membranes With Fractionated Kraft and Organosolv Lignin
title_fullStr Enhanced Conductivity of Chitosan Composite Membranes With Fractionated Kraft and Organosolv Lignin
title_full_unstemmed Enhanced Conductivity of Chitosan Composite Membranes With Fractionated Kraft and Organosolv Lignin
title_sort Enhanced Conductivity of Chitosan Composite Membranes With Fractionated Kraft and Organosolv Lignin
dc.creator.none.fl_str_mv Wolf, Mark Henning|||0000-0003-3033-6616
Ribes-Greus, A.|||0000-0003-2460-8291
Izaguirre, Nagore
Labidi, Jalel
author Wolf, Mark Henning|||0000-0003-3033-6616
author_facet Wolf, Mark Henning|||0000-0003-3033-6616
Ribes-Greus, A.|||0000-0003-2460-8291
Izaguirre, Nagore
Labidi, Jalel
author_role author
author2 Ribes-Greus, A.|||0000-0003-2460-8291
Izaguirre, Nagore
Labidi, Jalel
author2_role author
author
author
dc.contributor.none.fl_str_mv  Instituto Universitario de Investigación de Tecnología de los Materiales de la UPV
Departamento de Máquinas y Motores Térmicos
Escuela Técnica Superior de Ingeniería Aeroespacial y Diseño Industrial
Departamento de Ingeniería Química y Nuclear
Escuela Técnica Superior de Ingeniería Industrial
Eusko Jaurlaritza
European Commission
Generalitat Valenciana
Ministerio de Universidades
Universitat Politècnica de València
Repositorio Institucional de la Universitat Politècnica de València Riunet
dc.subject.none.fl_str_mv Chitosan composites membranes
Organosolv lignin
Fourier-transform infrared (FTIR)
topic Chitosan composites membranes
Organosolv lignin
Fourier-transform infrared (FTIR)
description [EN] Different bio-based chitosan composites containing kraft or organosolv lignin were subjected to successive solvent extractions (ethyl acetate followed by ethanol) and then modified by immersion in a sulfuric acid solution to obtain membranes with suitable conductive properties. The materials were characterized by Fourier-transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), oxidative-stability testing, water-uptake measurements, electron and proton conductivity, and H₂/O₂ fuel-cell performance, enabling correlations between composite structure and properties. Sulfuric-acid treatment introduced sulfate groups that promote ionic interactions between polymer chains, improving resistance to radical oxidative degradation. The dry modified biocomposites exhibited very low electronic conductivity (10⁻¹⁴–10⁻¹⁰ S·cm⁻¹) over the −10 to 60 °C range, indicating potential as electrical insulators. Acid modification also disrupted crystallinity and increased hydrophilicity, leading to higher water uptake. Consequently, proton transport was enhanced, resulting in increased proton conductivity and higher power output in an H₂/O₂ fuel cell. Composites containing organosolv lignin fractions showed stronger affinity for sulfate groups and, accordingly, higher oxidative stability, greater water uptake, and improved proton conductivity compared with kraft-lignin-based composites.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025-04-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://riunet.upv.es/handle/10251/220215
url https://riunet.upv.es/handle/10251/220215
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Generalitat Valenciana https://doi.org/10.13039/501100003359 MFA%2F2022%2F041 Diseño y validación de materiales innovadores para su desarrollo como electrolitos de pilas de combustible de intercambio protónico en vehículos
Eusko Jaurlaritza Eusko Jaurlaritza PIF19-183
Ministerio de Universidades MIU FPU21%2F00853
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv John Wiley & Sons
publisher.none.fl_str_mv John Wiley & Sons
dc.source.none.fl_str_mv reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
instname:Universitat Politècnica de València (UPV)
instname_str Universitat Politècnica de València (UPV)
reponame_str RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
collection RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,228081

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