Aggregation Behavior of Brij-35/Perfluorononanoic Acid Mixtures

Autores
Torres, María Florencia; Sales, Pablo Sebastián; Hoyos, Maria Rita Micaela; Fernández, Mariana Adela
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The mixed system of a non-ionic hydrocarbon surfactant, polyoxyethylene (23) lauryl ether (Brij-35), and a perfluorinated surfactant, perfluorononanoic acid, was investigated by a combination of methods. The critical micellar concentrations (CMC) have been determined over a wide range of sample compositions, by fluorescence and UV-visible spectrophotometry using pyrene and N-(4-nitrophenyl) perfluorononanamide respectively as molecular probes. The values of the CMC obtained were considerably different with the two techniques employed. Measurements of 19F nuclear magnetic resonance chemical shift of the same mixtures showed two breaks in the plots of Ddf vs. molar fraction of the perfluorinated surfactant. Conductivity as well as surface tension measurements also showed two breaks. The behavior is attributed to the formation of mixed micelles which change their composition when the fraction of the fluorinated compound increases and some segregation of the fluorinated compound takes place at high total surfactant concentration.
Fil: Torres, María Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Sales, Pablo Sebastián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Hoyos, Maria Rita Micaela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Fernández, Mariana Adela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Materia
AGGREGATION
MIXED MICELLES
PERFLUORONONANOIC ACID
NMR
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:11336/279490
Acceder
id CONICETDig_c8fd9c487cbdba8a9c3bf3fdfef21e40
oai_identifier_str oai:ri.conicet.gov.ar:11336/279490
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Aggregation Behavior of Brij-35/Perfluorononanoic Acid MixturesTorres, María FlorenciaSales, Pablo SebastiánHoyos, Maria Rita MicaelaFernández, Mariana AdelaAGGREGATIONMIXED MICELLESPERFLUORONONANOIC ACIDNMRhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The mixed system of a non-ionic hydrocarbon surfactant, polyoxyethylene (23) lauryl ether (Brij-35), and a perfluorinated surfactant, perfluorononanoic acid, was investigated by a combination of methods. The critical micellar concentrations (CMC) have been determined over a wide range of sample compositions, by fluorescence and UV-visible spectrophotometry using pyrene and N-(4-nitrophenyl) perfluorononanamide respectively as molecular probes. The values of the CMC obtained were considerably different with the two techniques employed. Measurements of 19F nuclear magnetic resonance chemical shift of the same mixtures showed two breaks in the plots of Ddf vs. molar fraction of the perfluorinated surfactant. Conductivity as well as surface tension measurements also showed two breaks. The behavior is attributed to the formation of mixed micelles which change their composition when the fraction of the fluorinated compound increases and some segregation of the fluorinated compound takes place at high total surfactant concentration.Fil: Torres, María Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaFil: Sales, Pablo Sebastián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaFil: Hoyos, Maria Rita Micaela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaFil: Fernández, Mariana Adela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaAmerican Chemical Society2010-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/279490Torres, María Florencia; Sales, Pablo Sebastián; Hoyos, Maria Rita Micaela; Fernández, Mariana Adela; Aggregation Behavior of Brij-35/Perfluorononanoic Acid Mixtures; American Chemical Society; Langmuir; 26; 23; 11-2010; 17858-178660743-7463CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/la103330pinfo:eu-repo/semantics/altIdentifier/doi/10.1021/la103330pinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-02-06T12:21:52Zoai:ri.conicet.gov.ar:11336/279490instacron: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:34982026-02-06 12:21:52.722CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Aggregation Behavior of Brij-35/Perfluorononanoic Acid Mixtures
title Aggregation Behavior of Brij-35/Perfluorononanoic Acid Mixtures
spellingShingle Aggregation Behavior of Brij-35/Perfluorononanoic Acid Mixtures
Torres, María Florencia
AGGREGATION
MIXED MICELLES
PERFLUORONONANOIC ACID
NMR
title_short Aggregation Behavior of Brij-35/Perfluorononanoic Acid Mixtures
title_full Aggregation Behavior of Brij-35/Perfluorononanoic Acid Mixtures
title_fullStr Aggregation Behavior of Brij-35/Perfluorononanoic Acid Mixtures
title_full_unstemmed Aggregation Behavior of Brij-35/Perfluorononanoic Acid Mixtures
title_sort Aggregation Behavior of Brij-35/Perfluorononanoic Acid Mixtures
dc.creator.none.fl_str_mv Torres, María Florencia
Sales, Pablo Sebastián
Hoyos, Maria Rita Micaela
Fernández, Mariana Adela
author Torres, María Florencia
author_facet Torres, María Florencia
Sales, Pablo Sebastián
Hoyos, Maria Rita Micaela
Fernández, Mariana Adela
author_role author
author2 Sales, Pablo Sebastián
Hoyos, Maria Rita Micaela
Fernández, Mariana Adela
author2_role author
author
author
dc.subject.none.fl_str_mv AGGREGATION
MIXED MICELLES
PERFLUORONONANOIC ACID
NMR
topic AGGREGATION
MIXED MICELLES
PERFLUORONONANOIC ACID
NMR
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The mixed system of a non-ionic hydrocarbon surfactant, polyoxyethylene (23) lauryl ether (Brij-35), and a perfluorinated surfactant, perfluorononanoic acid, was investigated by a combination of methods. The critical micellar concentrations (CMC) have been determined over a wide range of sample compositions, by fluorescence and UV-visible spectrophotometry using pyrene and N-(4-nitrophenyl) perfluorononanamide respectively as molecular probes. The values of the CMC obtained were considerably different with the two techniques employed. Measurements of 19F nuclear magnetic resonance chemical shift of the same mixtures showed two breaks in the plots of Ddf vs. molar fraction of the perfluorinated surfactant. Conductivity as well as surface tension measurements also showed two breaks. The behavior is attributed to the formation of mixed micelles which change their composition when the fraction of the fluorinated compound increases and some segregation of the fluorinated compound takes place at high total surfactant concentration.
Fil: Torres, María Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Sales, Pablo Sebastián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Hoyos, Maria Rita Micaela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Fernández, Mariana Adela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
description The mixed system of a non-ionic hydrocarbon surfactant, polyoxyethylene (23) lauryl ether (Brij-35), and a perfluorinated surfactant, perfluorononanoic acid, was investigated by a combination of methods. The critical micellar concentrations (CMC) have been determined over a wide range of sample compositions, by fluorescence and UV-visible spectrophotometry using pyrene and N-(4-nitrophenyl) perfluorononanamide respectively as molecular probes. The values of the CMC obtained were considerably different with the two techniques employed. Measurements of 19F nuclear magnetic resonance chemical shift of the same mixtures showed two breaks in the plots of Ddf vs. molar fraction of the perfluorinated surfactant. Conductivity as well as surface tension measurements also showed two breaks. The behavior is attributed to the formation of mixed micelles which change their composition when the fraction of the fluorinated compound increases and some segregation of the fluorinated compound takes place at high total surfactant concentration.
publishDate 2010
dc.date.none.fl_str_mv 2010-11
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/11336/279490
Torres, María Florencia; Sales, Pablo Sebastián; Hoyos, Maria Rita Micaela; Fernández, Mariana Adela; Aggregation Behavior of Brij-35/Perfluorononanoic Acid Mixtures; American Chemical Society; Langmuir; 26; 23; 11-2010; 17858-17866
0743-7463
CONICET Digital
CONICET
url http://hdl.handle.net/11336/279490
identifier_str_mv Torres, María Florencia; Sales, Pablo Sebastián; Hoyos, Maria Rita Micaela; Fernández, Mariana Adela; Aggregation Behavior of Brij-35/Perfluorononanoic Acid Mixtures; American Chemical Society; Langmuir; 26; 23; 11-2010; 17858-17866
0743-7463
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://pubs.acs.org/doi/10.1021/la103330p
info:eu-repo/semantics/altIdentifier/doi/10.1021/la103330p
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
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
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
_version_ 1856403005972152320
score 13.106097

Publicaciones similares