Influence of humidity in the alteration of unstable glasses

[EN] The control of humidity between certain limits is essential to avoid the alteration of historical objects, such as unstable historical glasses. However, the usual limits can be altered due to the presence of volatile organic compounds. This work presents the results of the exposure of soda, pot...

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Detalles Bibliográficos
Autores: Laso, Elena, Aparicio, Mario, Palomar Sanz, Teresa
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/349396
Acceso en línea:http://hdl.handle.net/10261/349396
Access Level:acceso abierto
Palabra clave:Crizzling
Degradation
Formic acid
Humidity
Unstable glass
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spelling Influence of humidity in the alteration of unstable glassesLaso, ElenaAparicio, MarioPalomar Sanz, TeresaCrizzlingDegradationFormic acidHumidityUnstable glass[EN] The control of humidity between certain limits is essential to avoid the alteration of historical objects, such as unstable historical glasses. However, the usual limits can be altered due to the presence of volatile organic compounds. This work presents the results of the exposure of soda, potash, and mixed-alkali silicate glasses to neutral and acidic (formic) atmospheres with ∼30%, ∼70%, and ∼100% relative humidity. The hygroscopic capacity of the glass was analyzed by gravimetry, and the surface alteration was evaluated by infrared spectroscopy, optical microscopy, and ion chromatography. In all glasses, the alteration begins with alkali ions’ lixiviation followed by the silica network's hydrolytic attack. The results showed that soda and mixed-alkali silicate glasses exhibit similar behavior, while the potash-lime one experienced the fastest degradation due to its composition. Results also confirmed that high humidity increased the alteration rate causing a higher hygroscopicity and reactivity of glasses. Finally, acidic environments promoted the ion-exchange reaction at high humidity, accelerating the lixiviation of alkaline ions and promoting the diffusion of water into the glass network.European Union Horizon 2020, Grant/Award Number: 739566; Slovak Grant Agency, Grant/Award Number: VEGA 1/0476/22; RIS3 SK, Grant/Award Number: ITMS2014+:313011W442; European Regional Development FundPeer reviewedWiley-VCHEuropean CommissionSlovak Research and Development AgencyConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202420242023info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/349396reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/EC/H2020/739566https://doi.org/10.1111/ijag.16641Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3493962026-05-22T06:33:51Z
dc.title.none.fl_str_mv Influence of humidity in the alteration of unstable glasses
title Influence of humidity in the alteration of unstable glasses
spellingShingle Influence of humidity in the alteration of unstable glasses
Laso, Elena
Crizzling
Degradation
Formic acid
Humidity
Unstable glass
title_short Influence of humidity in the alteration of unstable glasses
title_full Influence of humidity in the alteration of unstable glasses
title_fullStr Influence of humidity in the alteration of unstable glasses
title_full_unstemmed Influence of humidity in the alteration of unstable glasses
title_sort Influence of humidity in the alteration of unstable glasses
dc.creator.none.fl_str_mv Laso, Elena
Aparicio, Mario
Palomar Sanz, Teresa
author Laso, Elena
author_facet Laso, Elena
Aparicio, Mario
Palomar Sanz, Teresa
author_role author
author2 Aparicio, Mario
Palomar Sanz, Teresa
author2_role author
author
dc.contributor.none.fl_str_mv European Commission
Slovak Research and Development Agency
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Crizzling
Degradation
Formic acid
Humidity
Unstable glass
topic Crizzling
Degradation
Formic acid
Humidity
Unstable glass
description [EN] The control of humidity between certain limits is essential to avoid the alteration of historical objects, such as unstable historical glasses. However, the usual limits can be altered due to the presence of volatile organic compounds. This work presents the results of the exposure of soda, potash, and mixed-alkali silicate glasses to neutral and acidic (formic) atmospheres with ∼30%, ∼70%, and ∼100% relative humidity. The hygroscopic capacity of the glass was analyzed by gravimetry, and the surface alteration was evaluated by infrared spectroscopy, optical microscopy, and ion chromatography. In all glasses, the alteration begins with alkali ions’ lixiviation followed by the silica network's hydrolytic attack. The results showed that soda and mixed-alkali silicate glasses exhibit similar behavior, while the potash-lime one experienced the fastest degradation due to its composition. Results also confirmed that high humidity increased the alteration rate causing a higher hygroscopicity and reactivity of glasses. Finally, acidic environments promoted the ion-exchange reaction at high humidity, accelerating the lixiviation of alkaline ions and promoting the diffusion of water into the glass network.
publishDate 2023
dc.date.none.fl_str_mv 2023
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/349396
url http://hdl.handle.net/10261/349396
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/EC/H2020/739566
https://doi.org/10.1111/ijag.16641
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Wiley-VCH
publisher.none.fl_str_mv Wiley-VCH
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
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score 15,81155

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