Hydrolysis of p-nitrophenyl perfluoroctanoate in mixed surfactant systems

Autores
Torres, María Florencia; Hoyos, Maria Rita Micaela; Fernández, Mariana Adela
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The kinetics of the hydrolysis reaction of p-nitrophenyl perfluoroctanoate were studied in the presence of different amphiphilic systems: two hydrocarbon surfactants (sodium dodecyl sulfate, SDS, and polyoxyethylene(23)lauryl ether, Brij-35), a perfluorinated detergent (perfluorononanoic acid, PFNA) and in mixtures of SDS–PFNA and Brij-35–PFNA. The study was performed at different compositions of the mixtures (characterized by the molar fraction of PFNA, αPFNA), and for each αPFNA the concentration was varied over a wide range. The kinetic probe p-nitrophenyl perfluoroctanoate showed a very strong interaction with the surfactants. In the presence of the mixed surfactants, the behaviour of the probe changed dramatically with the composition of the mixtures, which indicates that this substrate is very sensitive to the effect of the micellar media, being a very good molecule to study these types of surfactant systems. The use of the studied ester allowed us to confirm the presence of two different aggregates in the mixture Brij-35–PFNA as was previously observed with other techniques. The presence of hydrocarbon-rich micelles at low αPFNA, as well as perfluorinated rich micelles at high αPFNA was also confirmed. The kinetic behaviour of p-nitrophenyl perfluoroctanoate in SDS–PFNA mixtures fully agreed with our previous description of the aggregates formed in this system. The presence of a practically pure PFNA micelle at high αPFNA could be also demonstrated from the kinetic results.
Fil: Torres, María Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; 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
SURFACTANT
HYDROLYSIS
KINETIC
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acceso abierto
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https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
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CONICET Digital (CONICET)
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Consejo Nacional de Investigaciones Científicas y Técnicas
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network_name_str CONICET Digital (CONICET)
spelling Hydrolysis of p-nitrophenyl perfluoroctanoate in mixed surfactant systemsTorres, María FlorenciaHoyos, Maria Rita MicaelaFernández, Mariana AdelaSURFACTANTHYDROLYSISKINETIChttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The kinetics of the hydrolysis reaction of p-nitrophenyl perfluoroctanoate were studied in the presence of different amphiphilic systems: two hydrocarbon surfactants (sodium dodecyl sulfate, SDS, and polyoxyethylene(23)lauryl ether, Brij-35), a perfluorinated detergent (perfluorononanoic acid, PFNA) and in mixtures of SDS–PFNA and Brij-35–PFNA. The study was performed at different compositions of the mixtures (characterized by the molar fraction of PFNA, αPFNA), and for each αPFNA the concentration was varied over a wide range. The kinetic probe p-nitrophenyl perfluoroctanoate showed a very strong interaction with the surfactants. In the presence of the mixed surfactants, the behaviour of the probe changed dramatically with the composition of the mixtures, which indicates that this substrate is very sensitive to the effect of the micellar media, being a very good molecule to study these types of surfactant systems. The use of the studied ester allowed us to confirm the presence of two different aggregates in the mixture Brij-35–PFNA as was previously observed with other techniques. The presence of hydrocarbon-rich micelles at low αPFNA, as well as perfluorinated rich micelles at high αPFNA was also confirmed. The kinetic behaviour of p-nitrophenyl perfluoroctanoate in SDS–PFNA mixtures fully agreed with our previous description of the aggregates formed in this system. The presence of a practically pure PFNA micelle at high αPFNA could be also demonstrated from the kinetic results.Fil: Torres, María Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; 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; ArgentinaRoyal Society of Chemistry2014-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/31364Fernández, Mariana Adela; Hoyos, Maria Rita Micaela; Torres, María Florencia; Hydrolysis of p-nitrophenyl perfluoroctanoate in mixed surfactant systems; Royal Society of Chemistry; RSC Advances; 4; 54; 6-2014; 28606-286142046-2069CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1039/C4RA02888Kinfo:eu-repo/semantics/altIdentifier/url/http://pubs.rsc.org/en/Content/ArticleLanding/2014/RA/c4ra02888kinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:10:47Zoai:ri.conicet.gov.ar:11336/31364instacron: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 12:10:47.312CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Hydrolysis of p-nitrophenyl perfluoroctanoate in mixed surfactant systems
title Hydrolysis of p-nitrophenyl perfluoroctanoate in mixed surfactant systems
spellingShingle Hydrolysis of p-nitrophenyl perfluoroctanoate in mixed surfactant systems
Torres, María Florencia
SURFACTANT
HYDROLYSIS
KINETIC
title_short Hydrolysis of p-nitrophenyl perfluoroctanoate in mixed surfactant systems
title_full Hydrolysis of p-nitrophenyl perfluoroctanoate in mixed surfactant systems
title_fullStr Hydrolysis of p-nitrophenyl perfluoroctanoate in mixed surfactant systems
title_full_unstemmed Hydrolysis of p-nitrophenyl perfluoroctanoate in mixed surfactant systems
title_sort Hydrolysis of p-nitrophenyl perfluoroctanoate in mixed surfactant systems
dc.creator.none.fl_str_mv Torres, María Florencia
Hoyos, Maria Rita Micaela
Fernández, Mariana Adela
author Torres, María Florencia
author_facet Torres, María Florencia
Hoyos, Maria Rita Micaela
Fernández, Mariana Adela
author_role author
author2 Hoyos, Maria Rita Micaela
Fernández, Mariana Adela
author2_role author
author
dc.subject.none.fl_str_mv SURFACTANT
HYDROLYSIS
KINETIC
topic SURFACTANT
HYDROLYSIS
KINETIC
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 kinetics of the hydrolysis reaction of p-nitrophenyl perfluoroctanoate were studied in the presence of different amphiphilic systems: two hydrocarbon surfactants (sodium dodecyl sulfate, SDS, and polyoxyethylene(23)lauryl ether, Brij-35), a perfluorinated detergent (perfluorononanoic acid, PFNA) and in mixtures of SDS–PFNA and Brij-35–PFNA. The study was performed at different compositions of the mixtures (characterized by the molar fraction of PFNA, αPFNA), and for each αPFNA the concentration was varied over a wide range. The kinetic probe p-nitrophenyl perfluoroctanoate showed a very strong interaction with the surfactants. In the presence of the mixed surfactants, the behaviour of the probe changed dramatically with the composition of the mixtures, which indicates that this substrate is very sensitive to the effect of the micellar media, being a very good molecule to study these types of surfactant systems. The use of the studied ester allowed us to confirm the presence of two different aggregates in the mixture Brij-35–PFNA as was previously observed with other techniques. The presence of hydrocarbon-rich micelles at low αPFNA, as well as perfluorinated rich micelles at high αPFNA was also confirmed. The kinetic behaviour of p-nitrophenyl perfluoroctanoate in SDS–PFNA mixtures fully agreed with our previous description of the aggregates formed in this system. The presence of a practically pure PFNA micelle at high αPFNA could be also demonstrated from the kinetic results.
Fil: Torres, María Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; 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 kinetics of the hydrolysis reaction of p-nitrophenyl perfluoroctanoate were studied in the presence of different amphiphilic systems: two hydrocarbon surfactants (sodium dodecyl sulfate, SDS, and polyoxyethylene(23)lauryl ether, Brij-35), a perfluorinated detergent (perfluorononanoic acid, PFNA) and in mixtures of SDS–PFNA and Brij-35–PFNA. The study was performed at different compositions of the mixtures (characterized by the molar fraction of PFNA, αPFNA), and for each αPFNA the concentration was varied over a wide range. The kinetic probe p-nitrophenyl perfluoroctanoate showed a very strong interaction with the surfactants. In the presence of the mixed surfactants, the behaviour of the probe changed dramatically with the composition of the mixtures, which indicates that this substrate is very sensitive to the effect of the micellar media, being a very good molecule to study these types of surfactant systems. The use of the studied ester allowed us to confirm the presence of two different aggregates in the mixture Brij-35–PFNA as was previously observed with other techniques. The presence of hydrocarbon-rich micelles at low αPFNA, as well as perfluorinated rich micelles at high αPFNA was also confirmed. The kinetic behaviour of p-nitrophenyl perfluoroctanoate in SDS–PFNA mixtures fully agreed with our previous description of the aggregates formed in this system. The presence of a practically pure PFNA micelle at high αPFNA could be also demonstrated from the kinetic results.
publishDate 2014
dc.date.none.fl_str_mv 2014-06
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/11336/31364
Fernández, Mariana Adela; Hoyos, Maria Rita Micaela; Torres, María Florencia; Hydrolysis of p-nitrophenyl perfluoroctanoate in mixed surfactant systems; Royal Society of Chemistry; RSC Advances; 4; 54; 6-2014; 28606-28614
2046-2069
CONICET Digital
CONICET
url http://hdl.handle.net/11336/31364
identifier_str_mv Fernández, Mariana Adela; Hoyos, Maria Rita Micaela; Torres, María Florencia; Hydrolysis of p-nitrophenyl perfluoroctanoate in mixed surfactant systems; Royal Society of Chemistry; RSC Advances; 4; 54; 6-2014; 28606-28614
2046-2069
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1039/C4RA02888K
info:eu-repo/semantics/altIdentifier/url/http://pubs.rsc.org/en/Content/ArticleLanding/2014/RA/c4ra02888k
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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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
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Royal Society of Chemistry
publisher.none.fl_str_mv Royal Society of Chemistry
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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score 12.982451

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