Two Different Scenarios for the Equilibration of Polycation—Anionic Solutions at Water–Vapor Interfaces

The assembly in solution of the cationic polymer poly(diallyldimethylammonium chloride) (PDADMAC) and two different anionic surfactants, sodium lauryl ether sulfate (SLES) and sodium N-lauroyl-N-methyltaurate (SLMT), has been studied. Additionally, the adsorption of the formed complexes at the water...

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Detalles Bibliográficos
Autores: Guzmán Solís, Eduardo, Fernández Peña, Laura, Akanno, Andrew, Llamas, Sara, Ortega Gómez, Francisco, González Rubio, Ramón
Tipo de recurso: artículo
Fecha de publicación:2019
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/12594
Acceso en línea:https://hdl.handle.net/20.500.14352/12594
Access Level:acceso abierto
Palabra clave:polyelectrolyte
surfactants
kinetically trapped aggregates
interfaces
surface tension
interfacial dilational rheology
adsorption
Física (Química)
Química física (Química)
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spelling Two Different Scenarios for the Equilibration of Polycation—Anionic Solutions at Water–Vapor InterfacesGuzmán Solís, EduardoFernández Peña, LauraAkanno, AndrewLlamas, SaraOrtega Gómez, FranciscoGonzález Rubio, Ramónpolyelectrolytesurfactantskinetically trapped aggregatesinterfacessurface tensioninterfacial dilational rheologyadsorptionFísica (Química)Química física (Química)The assembly in solution of the cationic polymer poly(diallyldimethylammonium chloride) (PDADMAC) and two different anionic surfactants, sodium lauryl ether sulfate (SLES) and sodium N-lauroyl-N-methyltaurate (SLMT), has been studied. Additionally, the adsorption of the formed complexes at the water–vapor interface have been measured to try to shed light on the complex physico-chemical behavior of these systems under conditions close to that used in commercial products. The results show that, independently of the type of surfactant, polyelectrolyte-surfactant interactions lead to the formation of kinetically trapped aggregates in solution. Such aggregates drive the solution to phase separation, even though the complexes should remain undercharged along the whole range of explored compositions. Despite the similarities in the bulk behavior, the equilibration of the interfacial layers formed upon adsorption of kinetically trapped aggregates at the water–vapor interface follows different mechanisms. This was pointed out by surface tension and interfacial dilational rheology measurements, which showed different equilibration mechanisms of the interfacial layer depending on the nature of the surfactant: (i) formation layers with intact aggregates in the PDADMAC-SLMT system, and (ii) dissociation and spreading of kinetically trapped aggregates after their incorporation at the fluid interface for the PDADMAC-SLES one. This evidences the critical impact of the chemical nature of the surfactant in the interfacial properties of these systems. It is expected that this work may contribute to the understanding of the complex interactions involved in this type of system to exploit its behavior for technological purposes.MDPIUniversidad Complutense de Madrid20192019-07-1320192019-07-13journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/12594reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución 3.0 Españahttps://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/125942026-06-02T12:44:21Z
dc.title.none.fl_str_mv Two Different Scenarios for the Equilibration of Polycation—Anionic Solutions at Water–Vapor Interfaces
title Two Different Scenarios for the Equilibration of Polycation—Anionic Solutions at Water–Vapor Interfaces
spellingShingle Two Different Scenarios for the Equilibration of Polycation—Anionic Solutions at Water–Vapor Interfaces
Guzmán Solís, Eduardo
polyelectrolyte
surfactants
kinetically trapped aggregates
interfaces
surface tension
interfacial dilational rheology
adsorption
Física (Química)
Química física (Química)
title_short Two Different Scenarios for the Equilibration of Polycation—Anionic Solutions at Water–Vapor Interfaces
title_full Two Different Scenarios for the Equilibration of Polycation—Anionic Solutions at Water–Vapor Interfaces
title_fullStr Two Different Scenarios for the Equilibration of Polycation—Anionic Solutions at Water–Vapor Interfaces
title_full_unstemmed Two Different Scenarios for the Equilibration of Polycation—Anionic Solutions at Water–Vapor Interfaces
title_sort Two Different Scenarios for the Equilibration of Polycation—Anionic Solutions at Water–Vapor Interfaces
dc.creator.none.fl_str_mv Guzmán Solís, Eduardo
Fernández Peña, Laura
Akanno, Andrew
Llamas, Sara
Ortega Gómez, Francisco
González Rubio, Ramón
author Guzmán Solís, Eduardo
author_facet Guzmán Solís, Eduardo
Fernández Peña, Laura
Akanno, Andrew
Llamas, Sara
Ortega Gómez, Francisco
González Rubio, Ramón
author_role author
author2 Fernández Peña, Laura
Akanno, Andrew
Llamas, Sara
Ortega Gómez, Francisco
González Rubio, Ramón
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv polyelectrolyte
surfactants
kinetically trapped aggregates
interfaces
surface tension
interfacial dilational rheology
adsorption
Física (Química)
Química física (Química)
topic polyelectrolyte
surfactants
kinetically trapped aggregates
interfaces
surface tension
interfacial dilational rheology
adsorption
Física (Química)
Química física (Química)
description The assembly in solution of the cationic polymer poly(diallyldimethylammonium chloride) (PDADMAC) and two different anionic surfactants, sodium lauryl ether sulfate (SLES) and sodium N-lauroyl-N-methyltaurate (SLMT), has been studied. Additionally, the adsorption of the formed complexes at the water–vapor interface have been measured to try to shed light on the complex physico-chemical behavior of these systems under conditions close to that used in commercial products. The results show that, independently of the type of surfactant, polyelectrolyte-surfactant interactions lead to the formation of kinetically trapped aggregates in solution. Such aggregates drive the solution to phase separation, even though the complexes should remain undercharged along the whole range of explored compositions. Despite the similarities in the bulk behavior, the equilibration of the interfacial layers formed upon adsorption of kinetically trapped aggregates at the water–vapor interface follows different mechanisms. This was pointed out by surface tension and interfacial dilational rheology measurements, which showed different equilibration mechanisms of the interfacial layer depending on the nature of the surfactant: (i) formation layers with intact aggregates in the PDADMAC-SLMT system, and (ii) dissociation and spreading of kinetically trapped aggregates after their incorporation at the fluid interface for the PDADMAC-SLES one. This evidences the critical impact of the chemical nature of the surfactant in the interfacial properties of these systems. It is expected that this work may contribute to the understanding of the complex interactions involved in this type of system to exploit its behavior for technological purposes.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019-07-13
2019
2019-07-13
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/12594
url https://hdl.handle.net/20.500.14352/12594
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución 3.0 España
https://creativecommons.org/licenses/by/3.0/es/
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
Atribución 3.0 España
https://creativecommons.org/licenses/by/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869404099371335680
score 15,300719

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