Superhydrophobic and breathable resorcinol-formaldehyde Xerogels

A new macroporous, waterproof and breathable material has been synthetized. The synthesis of these materials consists in a modified version of the classical resorcinol-formaldehyde (RF) xerogels synthesis. This new process includes a further treatment, after the gelation-curing-drying process, with...

Descripción completa

Detalles Bibliográficos
Autores: Díaz Alonso-Buenaposada, Isabel, Arenillas de la Puente, Ana, Montes Morán, Miguel Ángel, Menéndez Díaz, José Ángel
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2017
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/156371
Acceso en línea:http://hdl.handle.net/10261/156371
Access Level:acceso abierto
Palabra clave:Xerogels
Hydrophobicity
Surface chemistry
Passivation
id ES_5b7ecdbb8ee65da2526fa45cca02c304
oai_identifier_str oai:digital.csic.es:10261/156371
network_acronym_str ES
network_name_str España
repository_id_str
spelling Superhydrophobic and breathable resorcinol-formaldehyde XerogelsDíaz Alonso-Buenaposada, IsabelArenillas de la Puente, AnaMontes Morán, Miguel ÁngelMenéndez Díaz, José ÁngelXerogelsHydrophobicitySurface chemistryPassivationA new macroporous, waterproof and breathable material has been synthetized. The synthesis of these materials consists in a modified version of the classical resorcinol-formaldehyde (RF) xerogels synthesis. This new process includes a further treatment, after the gelation-curing-drying process, with methanol at 240 °C in order to passivate the hydrophilic phenolic groups of the surface of the RF xerogel. It was found that the treatment time strongly depends on the pore size of the xerogels. After reaching a threshold time, the hydrophilic materials become superhydrophobic. It is postulated that the exohedral inner surface of the porous xerogels, different from most porous materials, is responsible for this behavior. Although the materials exhibit a superhydrophobic behavior against liquid water and maintain its waterproofness for a long period of time, they are able to adsorb/desorb water vapor, which makes them also breathable.The authors gratefully acknowledge the financial support of the Ministerio de Economía y Competitividad of Spain, MINECO (Project CTQ2014-54772-P).Peer reviewedElsevierMinisterio de Economía y Competitividad (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201720172017info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/156371reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1016/j.jnoncrysol.2017.05.039Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1563712026-05-22T06:33:51Z
dc.title.none.fl_str_mv Superhydrophobic and breathable resorcinol-formaldehyde Xerogels
title Superhydrophobic and breathable resorcinol-formaldehyde Xerogels
spellingShingle Superhydrophobic and breathable resorcinol-formaldehyde Xerogels
Díaz Alonso-Buenaposada, Isabel
Xerogels
Hydrophobicity
Surface chemistry
Passivation
title_short Superhydrophobic and breathable resorcinol-formaldehyde Xerogels
title_full Superhydrophobic and breathable resorcinol-formaldehyde Xerogels
title_fullStr Superhydrophobic and breathable resorcinol-formaldehyde Xerogels
title_full_unstemmed Superhydrophobic and breathable resorcinol-formaldehyde Xerogels
title_sort Superhydrophobic and breathable resorcinol-formaldehyde Xerogels
dc.creator.none.fl_str_mv Díaz Alonso-Buenaposada, Isabel
Arenillas de la Puente, Ana
Montes Morán, Miguel Ángel
Menéndez Díaz, José Ángel
author Díaz Alonso-Buenaposada, Isabel
author_facet Díaz Alonso-Buenaposada, Isabel
Arenillas de la Puente, Ana
Montes Morán, Miguel Ángel
Menéndez Díaz, José Ángel
author_role author
author2 Arenillas de la Puente, Ana
Montes Morán, Miguel Ángel
Menéndez Díaz, José Ángel
author2_role author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Xerogels
Hydrophobicity
Surface chemistry
Passivation
topic Xerogels
Hydrophobicity
Surface chemistry
Passivation
description A new macroporous, waterproof and breathable material has been synthetized. The synthesis of these materials consists in a modified version of the classical resorcinol-formaldehyde (RF) xerogels synthesis. This new process includes a further treatment, after the gelation-curing-drying process, with methanol at 240 °C in order to passivate the hydrophilic phenolic groups of the surface of the RF xerogel. It was found that the treatment time strongly depends on the pore size of the xerogels. After reaching a threshold time, the hydrophilic materials become superhydrophobic. It is postulated that the exohedral inner surface of the porous xerogels, different from most porous materials, is responsible for this behavior. Although the materials exhibit a superhydrophobic behavior against liquid water and maintain its waterproofness for a long period of time, they are able to adsorb/desorb water vapor, which makes them also breathable.
publishDate 2017
dc.date.none.fl_str_mv 2017
2017
2017
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/156371
url http://hdl.handle.net/10261/156371
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.1016/j.jnoncrysol.2017.05.039
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869408804204969984
score 15,811543

Similares en LA Referencia