Adsorption Kinetics of a Cationic Surfactant Bearing a Two-Charged Head at the Air-Water Interface
- Autores
- Fernández Leyes, Marcos Daniel; Gimenez Reyes, Santiago Alberto; Cuenca, Victor Ezequiel; Sánchez Morales, Jhon Freddy; Ritacco, Hernán Alejandro
- Año de publicación
- 2020
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We studied the dynamics of adsorption at the air-water interface of a cationic surfactant bearing two charges, Gemini 12-2-12, at concentrations below and above the critical micelle concentration (cmc). We used maximum bubble pressure and Wilhelmy plate techniques in order to access all time scales in the adsorption process. We found that the adsorption dynamics are controlled by diffusion at the initial stage of the adsorption process (milliseconds) and it is kinetically controlled by an electrostatic barrier (minute) approaching the equilibrium surfactant surface concentration. Between these two extremes, we found several relaxation phenomena, all following exponential decays with characteristic times spanning from one to hundreds of seconds. By means of time-resolved surface potential measurements, we show that these processes involve charge redistribution within the interfacial region. The surface tension data are analyzed and interpreted in the framework of the free energy approach.
Fil: Fernández Leyes, Marcos Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina
Fil: Gimenez Reyes, Santiago Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina
Fil: Cuenca, Victor Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina
Fil: Sánchez Morales, Jhon Freddy. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina
Fil: Ritacco, Hernán Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina - Materia
-
CATIONIC SURFACTANTS
DYNAMIC SURFACE TENSION
GEMINI 12-2-12 SURFACTANT
MAXIMUM BUBBLE PRESSURE
SURFACE POTENTIAL - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/143305
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oai:ri.conicet.gov.ar:11336/143305 |
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Adsorption Kinetics of a Cationic Surfactant Bearing a Two-Charged Head at the Air-Water InterfaceFernández Leyes, Marcos DanielGimenez Reyes, Santiago AlbertoCuenca, Victor EzequielSánchez Morales, Jhon FreddyRitacco, Hernán AlejandroCATIONIC SURFACTANTSDYNAMIC SURFACE TENSIONGEMINI 12-2-12 SURFACTANTMAXIMUM BUBBLE PRESSURESURFACE POTENTIALhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We studied the dynamics of adsorption at the air-water interface of a cationic surfactant bearing two charges, Gemini 12-2-12, at concentrations below and above the critical micelle concentration (cmc). We used maximum bubble pressure and Wilhelmy plate techniques in order to access all time scales in the adsorption process. We found that the adsorption dynamics are controlled by diffusion at the initial stage of the adsorption process (milliseconds) and it is kinetically controlled by an electrostatic barrier (minute) approaching the equilibrium surfactant surface concentration. Between these two extremes, we found several relaxation phenomena, all following exponential decays with characteristic times spanning from one to hundreds of seconds. By means of time-resolved surface potential measurements, we show that these processes involve charge redistribution within the interfacial region. The surface tension data are analyzed and interpreted in the framework of the free energy approach.Fil: Fernández Leyes, Marcos Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; ArgentinaFil: Gimenez Reyes, Santiago Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; ArgentinaFil: Cuenca, Victor Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; ArgentinaFil: Sánchez Morales, Jhon Freddy. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; ArgentinaFil: Ritacco, Hernán Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; ArgentinaMDPI AG2020-01-22info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/143305Fernández Leyes, Marcos Daniel; Gimenez Reyes, Santiago Alberto; Cuenca, Victor Ezequiel; Sánchez Morales, Jhon Freddy; Ritacco, Hernán Alejandro; Adsorption Kinetics of a Cationic Surfactant Bearing a Two-Charged Head at the Air-Water Interface; MDPI AG; Coatings; 10; 2; 22-1-2020; 1-172079-6412CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2079-6412/10/2/95info:eu-repo/semantics/altIdentifier/doi/10.3390/coatings10020095info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:36:27Zoai:ri.conicet.gov.ar:11336/143305instacron: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:34982025-09-29 10:36:27.52CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Adsorption Kinetics of a Cationic Surfactant Bearing a Two-Charged Head at the Air-Water Interface |
title |
Adsorption Kinetics of a Cationic Surfactant Bearing a Two-Charged Head at the Air-Water Interface |
spellingShingle |
Adsorption Kinetics of a Cationic Surfactant Bearing a Two-Charged Head at the Air-Water Interface Fernández Leyes, Marcos Daniel CATIONIC SURFACTANTS DYNAMIC SURFACE TENSION GEMINI 12-2-12 SURFACTANT MAXIMUM BUBBLE PRESSURE SURFACE POTENTIAL |
title_short |
Adsorption Kinetics of a Cationic Surfactant Bearing a Two-Charged Head at the Air-Water Interface |
title_full |
Adsorption Kinetics of a Cationic Surfactant Bearing a Two-Charged Head at the Air-Water Interface |
title_fullStr |
Adsorption Kinetics of a Cationic Surfactant Bearing a Two-Charged Head at the Air-Water Interface |
title_full_unstemmed |
Adsorption Kinetics of a Cationic Surfactant Bearing a Two-Charged Head at the Air-Water Interface |
title_sort |
Adsorption Kinetics of a Cationic Surfactant Bearing a Two-Charged Head at the Air-Water Interface |
dc.creator.none.fl_str_mv |
Fernández Leyes, Marcos Daniel Gimenez Reyes, Santiago Alberto Cuenca, Victor Ezequiel Sánchez Morales, Jhon Freddy Ritacco, Hernán Alejandro |
author |
Fernández Leyes, Marcos Daniel |
author_facet |
Fernández Leyes, Marcos Daniel Gimenez Reyes, Santiago Alberto Cuenca, Victor Ezequiel Sánchez Morales, Jhon Freddy Ritacco, Hernán Alejandro |
author_role |
author |
author2 |
Gimenez Reyes, Santiago Alberto Cuenca, Victor Ezequiel Sánchez Morales, Jhon Freddy Ritacco, Hernán Alejandro |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
CATIONIC SURFACTANTS DYNAMIC SURFACE TENSION GEMINI 12-2-12 SURFACTANT MAXIMUM BUBBLE PRESSURE SURFACE POTENTIAL |
topic |
CATIONIC SURFACTANTS DYNAMIC SURFACE TENSION GEMINI 12-2-12 SURFACTANT MAXIMUM BUBBLE PRESSURE SURFACE POTENTIAL |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
We studied the dynamics of adsorption at the air-water interface of a cationic surfactant bearing two charges, Gemini 12-2-12, at concentrations below and above the critical micelle concentration (cmc). We used maximum bubble pressure and Wilhelmy plate techniques in order to access all time scales in the adsorption process. We found that the adsorption dynamics are controlled by diffusion at the initial stage of the adsorption process (milliseconds) and it is kinetically controlled by an electrostatic barrier (minute) approaching the equilibrium surfactant surface concentration. Between these two extremes, we found several relaxation phenomena, all following exponential decays with characteristic times spanning from one to hundreds of seconds. By means of time-resolved surface potential measurements, we show that these processes involve charge redistribution within the interfacial region. The surface tension data are analyzed and interpreted in the framework of the free energy approach. Fil: Fernández Leyes, Marcos Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina Fil: Gimenez Reyes, Santiago Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina Fil: Cuenca, Victor Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina Fil: Sánchez Morales, Jhon Freddy. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina Fil: Ritacco, Hernán Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina |
description |
We studied the dynamics of adsorption at the air-water interface of a cationic surfactant bearing two charges, Gemini 12-2-12, at concentrations below and above the critical micelle concentration (cmc). We used maximum bubble pressure and Wilhelmy plate techniques in order to access all time scales in the adsorption process. We found that the adsorption dynamics are controlled by diffusion at the initial stage of the adsorption process (milliseconds) and it is kinetically controlled by an electrostatic barrier (minute) approaching the equilibrium surfactant surface concentration. Between these two extremes, we found several relaxation phenomena, all following exponential decays with characteristic times spanning from one to hundreds of seconds. By means of time-resolved surface potential measurements, we show that these processes involve charge redistribution within the interfacial region. The surface tension data are analyzed and interpreted in the framework of the free energy approach. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-01-22 |
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/11336/143305 Fernández Leyes, Marcos Daniel; Gimenez Reyes, Santiago Alberto; Cuenca, Victor Ezequiel; Sánchez Morales, Jhon Freddy; Ritacco, Hernán Alejandro; Adsorption Kinetics of a Cationic Surfactant Bearing a Two-Charged Head at the Air-Water Interface; MDPI AG; Coatings; 10; 2; 22-1-2020; 1-17 2079-6412 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/143305 |
identifier_str_mv |
Fernández Leyes, Marcos Daniel; Gimenez Reyes, Santiago Alberto; Cuenca, Victor Ezequiel; Sánchez Morales, Jhon Freddy; Ritacco, Hernán Alejandro; Adsorption Kinetics of a Cationic Surfactant Bearing a Two-Charged Head at the Air-Water Interface; MDPI AG; Coatings; 10; 2; 22-1-2020; 1-17 2079-6412 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.mdpi.com/2079-6412/10/2/95 info:eu-repo/semantics/altIdentifier/doi/10.3390/coatings10020095 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
MDPI AG |
publisher.none.fl_str_mv |
MDPI AG |
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 |
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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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1844614385135255552 |
score |
13.070432 |