Characterization and properties of bio-aerogels composed of gelatin.

Aerogels are low density foam-like materials that are obtained from a sol-gel process in which the solvent used is replaced by air without collapsing the previously formed threedimensional structure. In this work, we have studied the properties of aerogels composites that have been generated only fr...

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Autores: Cruz Jesús, Lucía Guadalupe de la|||0000-0001-9009-4503, Abt, Tobias Martin|||0000-0002-4351-8155, Candau, Nicolas|||0000-0002-1559-8696, León Albiter, Noel|||0000-0003-1061-8552, Sánchez Soto, Miguel|||0000-0002-0023-5059
Tipo de recurso: artículo
Fecha de publicación:2024
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:español
OAI Identifier:oai:upcommons.upc.edu:2117/407449
Acceso en línea:https://hdl.handle.net/2117/407449
Access Level:acceso abierto
Palabra clave:Aerogels
Composite aerogel
Foam-like behavior
Mechanical properties
Combustion behaviour
Àrees temàtiques de la UPC::Enginyeria dels materials
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spelling Characterization and properties of bio-aerogels composed of gelatin.Caracterización y propiedades de bio-aerogeles compuestos de gelatina.Cruz Jesús, Lucía Guadalupe de la|||0000-0001-9009-4503Abt, Tobias Martin|||0000-0002-4351-8155Candau, Nicolas|||0000-0002-1559-8696León Albiter, Noel|||0000-0003-1061-8552Sánchez Soto, Miguel|||0000-0002-0023-5059AerogelsComposite aerogelFoam-like behaviorMechanical propertiesCombustion behaviourAerogelsÀrees temàtiques de la UPC::Enginyeria dels materialsAerogels are low density foam-like materials that are obtained from a sol-gel process in which the solvent used is replaced by air without collapsing the previously formed threedimensional structure. In this work, we have studied the properties of aerogels composites that have been generated only from natural substances, using gelatin as matrix, clay and tannic acid as modifiers and water as unique solvent. The aerogels were obtained through lyophilization. While pure gelatin aerogel behaves like an elastic and low-stiffness foam, the addition of tannic acid and clay allow obtaining high resistant foams, reaching of up to a 9- fold increase in the elastic modulus, maintaining very low densities ( 0.14 g/cm3). These increases were obtained, on the one hand, due to a change in the aerogel micro-structure that evolved from a layered towards a honeycomb one. On the other hand, the alkaline conditions employed lead to the oxidation of tannic acid that was then able to establish covalent bonding with the amino groups of gelatin. The presence of well-dispersed clay in the matrix significantly reduced the rate of thermal degradation of the compounds due to its rearrangement into a stable protective layer on the surface of the material. Under conditions similar to those developed in a fire, the compound exhibited low flammability and high resistance to the spread of fire thanks to the synergistic action between clay and tannic acid. The achievement of multifunctional properties in these natural aerogels, allows broadening its applications, making that eventually, can replace traditional petroleumderived foams, such as polyurethane, polystyrene or phenol-formaldehyde that have a notable environmental impact.Peer Reviewed20242024-04-1920242024-05-06journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/407449reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)EspañolspaAgencia Estatal de Investigación http://doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 PID2019-106518RB-I00 "ECOBLENDS" DE ALTO VALOR AÑADIDO PARA TECNICAS DE FABRICACION AVANZADASopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-ShareAlike 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-sa/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/4074492026-05-27T15:37:01Z
dc.title.none.fl_str_mv Characterization and properties of bio-aerogels composed of gelatin.
Caracterización y propiedades de bio-aerogeles compuestos de gelatina.
title Characterization and properties of bio-aerogels composed of gelatin.
spellingShingle Characterization and properties of bio-aerogels composed of gelatin.
Cruz Jesús, Lucía Guadalupe de la|||0000-0001-9009-4503
Aerogels
Composite aerogel
Foam-like behavior
Mechanical properties
Combustion behaviour
Aerogels
Àrees temàtiques de la UPC::Enginyeria dels materials
title_short Characterization and properties of bio-aerogels composed of gelatin.
title_full Characterization and properties of bio-aerogels composed of gelatin.
title_fullStr Characterization and properties of bio-aerogels composed of gelatin.
title_full_unstemmed Characterization and properties of bio-aerogels composed of gelatin.
title_sort Characterization and properties of bio-aerogels composed of gelatin.
dc.creator.none.fl_str_mv Cruz Jesús, Lucía Guadalupe de la|||0000-0001-9009-4503
Abt, Tobias Martin|||0000-0002-4351-8155
Candau, Nicolas|||0000-0002-1559-8696
León Albiter, Noel|||0000-0003-1061-8552
Sánchez Soto, Miguel|||0000-0002-0023-5059
author Cruz Jesús, Lucía Guadalupe de la|||0000-0001-9009-4503
author_facet Cruz Jesús, Lucía Guadalupe de la|||0000-0001-9009-4503
Abt, Tobias Martin|||0000-0002-4351-8155
Candau, Nicolas|||0000-0002-1559-8696
León Albiter, Noel|||0000-0003-1061-8552
Sánchez Soto, Miguel|||0000-0002-0023-5059
author_role author
author2 Abt, Tobias Martin|||0000-0002-4351-8155
Candau, Nicolas|||0000-0002-1559-8696
León Albiter, Noel|||0000-0003-1061-8552
Sánchez Soto, Miguel|||0000-0002-0023-5059
author2_role author
author
author
author
dc.subject.none.fl_str_mv Aerogels
Composite aerogel
Foam-like behavior
Mechanical properties
Combustion behaviour
Aerogels
Àrees temàtiques de la UPC::Enginyeria dels materials
topic Aerogels
Composite aerogel
Foam-like behavior
Mechanical properties
Combustion behaviour
Aerogels
Àrees temàtiques de la UPC::Enginyeria dels materials
description Aerogels are low density foam-like materials that are obtained from a sol-gel process in which the solvent used is replaced by air without collapsing the previously formed threedimensional structure. In this work, we have studied the properties of aerogels composites that have been generated only from natural substances, using gelatin as matrix, clay and tannic acid as modifiers and water as unique solvent. The aerogels were obtained through lyophilization. While pure gelatin aerogel behaves like an elastic and low-stiffness foam, the addition of tannic acid and clay allow obtaining high resistant foams, reaching of up to a 9- fold increase in the elastic modulus, maintaining very low densities ( 0.14 g/cm3). These increases were obtained, on the one hand, due to a change in the aerogel micro-structure that evolved from a layered towards a honeycomb one. On the other hand, the alkaline conditions employed lead to the oxidation of tannic acid that was then able to establish covalent bonding with the amino groups of gelatin. The presence of well-dispersed clay in the matrix significantly reduced the rate of thermal degradation of the compounds due to its rearrangement into a stable protective layer on the surface of the material. Under conditions similar to those developed in a fire, the compound exhibited low flammability and high resistance to the spread of fire thanks to the synergistic action between clay and tannic acid. The achievement of multifunctional properties in these natural aerogels, allows broadening its applications, making that eventually, can replace traditional petroleumderived foams, such as polyurethane, polystyrene or phenol-formaldehyde that have a notable environmental impact.
publishDate 2024
dc.date.none.fl_str_mv 2024
2024-04-19
2024
2024-05-06
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://hdl.handle.net/2117/407449
url https://hdl.handle.net/2117/407449
dc.language.none.fl_str_mv Español
spa
language_invalid_str_mv Español
language spa
dc.relation.none.fl_str_mv Agencia Estatal de Investigación http://doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 PID2019-106518RB-I00 "ECOBLENDS" DE ALTO VALOR AÑADIDO PARA TECNICAS DE FABRICACION AVANZADAS
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-ShareAlike 4.0 International
http://creativecommons.org/licenses/by-nc-sa/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
Attribution-NonCommercial-ShareAlike 4.0 International
http://creativecommons.org/licenses/by-nc-sa/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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