Critical wetting concentrations of trisiloxane surfactants

Autores
Ivanova, Natalia; Starov, Victor; Rubio, Ramon; Ritacco, Hernán Alejandro; Hilal, Nidal; Johnson, Daniel
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Trisiloxane surfactants also known as "superspreaders" are characterized by a critical wetting concentration (CWC) which has been determined by Svitova et al [T. Svitova, R.M. Hill, Y. Smirnova, A. Stuermer, G. Yakubov, Langmuir 14 (1998) 5023-5031]. CWC is a concentration above which a transition from partial wetting to complete wetting occurs at spreading over moderately hydrophobic surfaces, hence, the CWC is associated with the beginning of the superspreading. The latter shows that the knowledge of the CWCs is important for many wetting/spreading applications. We suggest a new method, which allows determining CWCs for a range of trisiloxanes using wetting behaviour of aqueous trisiloxane solutions on highly hydrophobic smooth Teflon AF coated silicon wafers. Using the new method the CWCs for trisiloxane surfactants, Tn with a wide range in the number (n = 4-9) of ethylene oxide units have been measured. The critical aggregation concentration (CAC) for trisiloxane surfactants has been measured using the surface tension methods. Additionally, spreading kinetics of all trisiloxane surfactants studied over moderately hydrophobic substrates has been investigated. It has been found that for all trisiloxanes studied the CWCs are several times higher than their corresponding CAC values. The CWCs for T6 and T8 trisiloxanes obtained according to our approach are in agreement with those measured by Svitova et al. [T. Svitova, R.M. Hill, Y. Smirnova, A. Stuermer, G. Yakubov, Langmuir 14 (1998) 5023-5031] for the case of complete wetting. It has been verified that indeed at CWCs estimated according to our approach trisiloxane surfactant solutions demonstrate superspreading behaviour on moderately hydrophobic surfaces with the exception of trisiloxane T4, which still shows only partial wetting. Thus, the CWC does not depend on the degree of hydrophobicity of substrates and could be considered as a distinct property of surfactants that characterize the highest limit of their spreading capability. Crown Copyright © 2009.
Fil: Ivanova, Natalia. University Of Loughborough; Reino Unido
Fil: Starov, Victor. University Of Loughborough; Reino Unido
Fil: Rubio, Ramon. Universidad Complutense de Madrid; España
Fil: Ritacco, Hernán Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Complutense de Madrid; España
Fil: Hilal, Nidal. The University of Nottingham; Reino Unido
Fil: Johnson, Daniel. The University of Nottingham; Reino Unido
Materia
Critical Wetting Concentration
Spreading
Trisiloxane
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/67655
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/67655
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Critical wetting concentrations of trisiloxane surfactantsIvanova, NataliaStarov, VictorRubio, RamonRitacco, Hernán AlejandroHilal, NidalJohnson, DanielCritical Wetting ConcentrationSpreadingTrisiloxanehttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Trisiloxane surfactants also known as "superspreaders" are characterized by a critical wetting concentration (CWC) which has been determined by Svitova et al [T. Svitova, R.M. Hill, Y. Smirnova, A. Stuermer, G. Yakubov, Langmuir 14 (1998) 5023-5031]. CWC is a concentration above which a transition from partial wetting to complete wetting occurs at spreading over moderately hydrophobic surfaces, hence, the CWC is associated with the beginning of the superspreading. The latter shows that the knowledge of the CWCs is important for many wetting/spreading applications. We suggest a new method, which allows determining CWCs for a range of trisiloxanes using wetting behaviour of aqueous trisiloxane solutions on highly hydrophobic smooth Teflon AF coated silicon wafers. Using the new method the CWCs for trisiloxane surfactants, Tn with a wide range in the number (n = 4-9) of ethylene oxide units have been measured. The critical aggregation concentration (CAC) for trisiloxane surfactants has been measured using the surface tension methods. Additionally, spreading kinetics of all trisiloxane surfactants studied over moderately hydrophobic substrates has been investigated. It has been found that for all trisiloxanes studied the CWCs are several times higher than their corresponding CAC values. The CWCs for T6 and T8 trisiloxanes obtained according to our approach are in agreement with those measured by Svitova et al. [T. Svitova, R.M. Hill, Y. Smirnova, A. Stuermer, G. Yakubov, Langmuir 14 (1998) 5023-5031] for the case of complete wetting. It has been verified that indeed at CWCs estimated according to our approach trisiloxane surfactant solutions demonstrate superspreading behaviour on moderately hydrophobic surfaces with the exception of trisiloxane T4, which still shows only partial wetting. Thus, the CWC does not depend on the degree of hydrophobicity of substrates and could be considered as a distinct property of surfactants that characterize the highest limit of their spreading capability. Crown Copyright © 2009.Fil: Ivanova, Natalia. University Of Loughborough; Reino UnidoFil: Starov, Victor. University Of Loughborough; Reino UnidoFil: Rubio, Ramon. Universidad Complutense de Madrid; EspañaFil: Ritacco, Hernán Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Complutense de Madrid; EspañaFil: Hilal, Nidal. The University of Nottingham; Reino UnidoFil: Johnson, Daniel. The University of Nottingham; Reino UnidoElsevier Science2010-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/67655Ivanova, Natalia; Starov, Victor; Rubio, Ramon; Ritacco, Hernán Alejandro; Hilal, Nidal; et al.; Critical wetting concentrations of trisiloxane surfactants; Elsevier Science; Colloids and Surfaces A: Physicochemical and Engineering Aspects; 354; 1-3; 2-2010; 143-1480927-7757CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S092777570900449Xinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.colsurfa.2009.07.030info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:21:07Zoai:ri.conicet.gov.ar:11336/67655instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 12:21:07.338CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Critical wetting concentrations of trisiloxane surfactants
title Critical wetting concentrations of trisiloxane surfactants
spellingShingle Critical wetting concentrations of trisiloxane surfactants
Ivanova, Natalia
Critical Wetting Concentration
Spreading
Trisiloxane
title_short Critical wetting concentrations of trisiloxane surfactants
title_full Critical wetting concentrations of trisiloxane surfactants
title_fullStr Critical wetting concentrations of trisiloxane surfactants
title_full_unstemmed Critical wetting concentrations of trisiloxane surfactants
title_sort Critical wetting concentrations of trisiloxane surfactants
dc.creator.none.fl_str_mv Ivanova, Natalia
Starov, Victor
Rubio, Ramon
Ritacco, Hernán Alejandro
Hilal, Nidal
Johnson, Daniel
author Ivanova, Natalia
author_facet Ivanova, Natalia
Starov, Victor
Rubio, Ramon
Ritacco, Hernán Alejandro
Hilal, Nidal
Johnson, Daniel
author_role author
author2 Starov, Victor
Rubio, Ramon
Ritacco, Hernán Alejandro
Hilal, Nidal
Johnson, Daniel
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Critical Wetting Concentration
Spreading
Trisiloxane
topic Critical Wetting Concentration
Spreading
Trisiloxane
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Trisiloxane surfactants also known as "superspreaders" are characterized by a critical wetting concentration (CWC) which has been determined by Svitova et al [T. Svitova, R.M. Hill, Y. Smirnova, A. Stuermer, G. Yakubov, Langmuir 14 (1998) 5023-5031]. CWC is a concentration above which a transition from partial wetting to complete wetting occurs at spreading over moderately hydrophobic surfaces, hence, the CWC is associated with the beginning of the superspreading. The latter shows that the knowledge of the CWCs is important for many wetting/spreading applications. We suggest a new method, which allows determining CWCs for a range of trisiloxanes using wetting behaviour of aqueous trisiloxane solutions on highly hydrophobic smooth Teflon AF coated silicon wafers. Using the new method the CWCs for trisiloxane surfactants, Tn with a wide range in the number (n = 4-9) of ethylene oxide units have been measured. The critical aggregation concentration (CAC) for trisiloxane surfactants has been measured using the surface tension methods. Additionally, spreading kinetics of all trisiloxane surfactants studied over moderately hydrophobic substrates has been investigated. It has been found that for all trisiloxanes studied the CWCs are several times higher than their corresponding CAC values. The CWCs for T6 and T8 trisiloxanes obtained according to our approach are in agreement with those measured by Svitova et al. [T. Svitova, R.M. Hill, Y. Smirnova, A. Stuermer, G. Yakubov, Langmuir 14 (1998) 5023-5031] for the case of complete wetting. It has been verified that indeed at CWCs estimated according to our approach trisiloxane surfactant solutions demonstrate superspreading behaviour on moderately hydrophobic surfaces with the exception of trisiloxane T4, which still shows only partial wetting. Thus, the CWC does not depend on the degree of hydrophobicity of substrates and could be considered as a distinct property of surfactants that characterize the highest limit of their spreading capability. Crown Copyright © 2009.
Fil: Ivanova, Natalia. University Of Loughborough; Reino Unido
Fil: Starov, Victor. University Of Loughborough; Reino Unido
Fil: Rubio, Ramon. Universidad Complutense de Madrid; España
Fil: Ritacco, Hernán Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Complutense de Madrid; España
Fil: Hilal, Nidal. The University of Nottingham; Reino Unido
Fil: Johnson, Daniel. The University of Nottingham; Reino Unido
description Trisiloxane surfactants also known as "superspreaders" are characterized by a critical wetting concentration (CWC) which has been determined by Svitova et al [T. Svitova, R.M. Hill, Y. Smirnova, A. Stuermer, G. Yakubov, Langmuir 14 (1998) 5023-5031]. CWC is a concentration above which a transition from partial wetting to complete wetting occurs at spreading over moderately hydrophobic surfaces, hence, the CWC is associated with the beginning of the superspreading. The latter shows that the knowledge of the CWCs is important for many wetting/spreading applications. We suggest a new method, which allows determining CWCs for a range of trisiloxanes using wetting behaviour of aqueous trisiloxane solutions on highly hydrophobic smooth Teflon AF coated silicon wafers. Using the new method the CWCs for trisiloxane surfactants, Tn with a wide range in the number (n = 4-9) of ethylene oxide units have been measured. The critical aggregation concentration (CAC) for trisiloxane surfactants has been measured using the surface tension methods. Additionally, spreading kinetics of all trisiloxane surfactants studied over moderately hydrophobic substrates has been investigated. It has been found that for all trisiloxanes studied the CWCs are several times higher than their corresponding CAC values. The CWCs for T6 and T8 trisiloxanes obtained according to our approach are in agreement with those measured by Svitova et al. [T. Svitova, R.M. Hill, Y. Smirnova, A. Stuermer, G. Yakubov, Langmuir 14 (1998) 5023-5031] for the case of complete wetting. It has been verified that indeed at CWCs estimated according to our approach trisiloxane surfactant solutions demonstrate superspreading behaviour on moderately hydrophobic surfaces with the exception of trisiloxane T4, which still shows only partial wetting. Thus, the CWC does not depend on the degree of hydrophobicity of substrates and could be considered as a distinct property of surfactants that characterize the highest limit of their spreading capability. Crown Copyright © 2009.
publishDate 2010
dc.date.none.fl_str_mv 2010-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/67655
Ivanova, Natalia; Starov, Victor; Rubio, Ramon; Ritacco, Hernán Alejandro; Hilal, Nidal; et al.; Critical wetting concentrations of trisiloxane surfactants; Elsevier Science; Colloids and Surfaces A: Physicochemical and Engineering Aspects; 354; 1-3; 2-2010; 143-148
0927-7757
CONICET Digital
CONICET
url http://hdl.handle.net/11336/67655
identifier_str_mv Ivanova, Natalia; Starov, Victor; Rubio, Ramon; Ritacco, Hernán Alejandro; Hilal, Nidal; et al.; Critical wetting concentrations of trisiloxane surfactants; Elsevier Science; Colloids and Surfaces A: Physicochemical and Engineering Aspects; 354; 1-3; 2-2010; 143-148
0927-7757
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S092777570900449X
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.colsurfa.2009.07.030
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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