Interaction of Chitosan with mono and di- valent anions in aqueous solution studied by cyclic voltammetry at a water/1,2-dichloroethane interface
- Autores
- Riva, Jullieta Soledad; Juárez, Ana Valeria; Beltramo, Dante Miguel; Yudi, Lidia Mabel
- Año de publicación
- 2011
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The interaction of the cationic polyelectrolyte chitosan (CHI), of different molecular weights, with two anions, picrate (Pi−) and eosin (Eo2−), in water was analyzed at pH 2.50 and 5.00. For this purpose the anions transfer current across a water/1,2-dichloroethane interface was employed to quantify anions concentration in absence or in presence of CHI. When CHI was added in increasing amounts to aqueous solutions containing Eo2− or Pi−, a gradual decrease in current values was observed, evidencing the binding ofthe anions to the polymer. This effectwasmore important atlowpH values and for CHIwith the highest molecular weight. From the results it is concluded that the interaction Eo2−-CHI is stronger than the corresponding to Pi−, probably due to the higher negative charge, and therefore themore pronounced hydrophilic nature of the first anion, which could lead to favour the electrostatic interactions with the cationic polyelectrolyte.
Fil: Riva, Jullieta Soledad. 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: Juárez, Ana Valeria. 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: Beltramo, Dante Miguel. Provincia de Córdoba. Ministerio de Ciencia y Técnica. Centro de Excelencia En Productos y Procesos de Córdoba. Laboratorio de Biotecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Yudi, Lidia Mabel. 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
-
liquid liquid/interface
chitosan
Picrate
Eosin - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/280887
Ver los metadatos del registro completo
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Interaction of Chitosan with mono and di- valent anions in aqueous solution studied by cyclic voltammetry at a water/1,2-dichloroethane interfaceRiva, Jullieta SoledadJuárez, Ana ValeriaBeltramo, Dante MiguelYudi, Lidia Mabelliquid liquid/interfacechitosanPicrateEosinhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The interaction of the cationic polyelectrolyte chitosan (CHI), of different molecular weights, with two anions, picrate (Pi−) and eosin (Eo2−), in water was analyzed at pH 2.50 and 5.00. For this purpose the anions transfer current across a water/1,2-dichloroethane interface was employed to quantify anions concentration in absence or in presence of CHI. When CHI was added in increasing amounts to aqueous solutions containing Eo2− or Pi−, a gradual decrease in current values was observed, evidencing the binding ofthe anions to the polymer. This effectwasmore important atlowpH values and for CHIwith the highest molecular weight. From the results it is concluded that the interaction Eo2−-CHI is stronger than the corresponding to Pi−, probably due to the higher negative charge, and therefore themore pronounced hydrophilic nature of the first anion, which could lead to favour the electrostatic interactions with the cationic polyelectrolyte.Fil: Riva, Jullieta Soledad. 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: Juárez, Ana Valeria. 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: Beltramo, Dante Miguel. Provincia de Córdoba. Ministerio de Ciencia y Técnica. Centro de Excelencia En Productos y Procesos de Córdoba. Laboratorio de Biotecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Yudi, Lidia Mabel. 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; ArgentinaPergamon-Elsevier Science Ltd2011-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/280887Riva, Jullieta Soledad; Juárez, Ana Valeria; Beltramo, Dante Miguel; Yudi, Lidia Mabel; Interaction of Chitosan with mono and di- valent anions in aqueous solution studied by cyclic voltammetry at a water/1,2-dichloroethane interface; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 59; 10-2011; 39-440013-4686CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0013468611015271info:eu-repo/semantics/altIdentifier/doi/10.1016/j.electacta.2011.10.023info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-02-06T13:13:39Zoai:ri.conicet.gov.ar:11336/280887instacron: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 13:13:39.744CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
Interaction of Chitosan with mono and di- valent anions in aqueous solution studied by cyclic voltammetry at a water/1,2-dichloroethane interface |
| title |
Interaction of Chitosan with mono and di- valent anions in aqueous solution studied by cyclic voltammetry at a water/1,2-dichloroethane interface |
| spellingShingle |
Interaction of Chitosan with mono and di- valent anions in aqueous solution studied by cyclic voltammetry at a water/1,2-dichloroethane interface Riva, Jullieta Soledad liquid liquid/interface chitosan Picrate Eosin |
| title_short |
Interaction of Chitosan with mono and di- valent anions in aqueous solution studied by cyclic voltammetry at a water/1,2-dichloroethane interface |
| title_full |
Interaction of Chitosan with mono and di- valent anions in aqueous solution studied by cyclic voltammetry at a water/1,2-dichloroethane interface |
| title_fullStr |
Interaction of Chitosan with mono and di- valent anions in aqueous solution studied by cyclic voltammetry at a water/1,2-dichloroethane interface |
| title_full_unstemmed |
Interaction of Chitosan with mono and di- valent anions in aqueous solution studied by cyclic voltammetry at a water/1,2-dichloroethane interface |
| title_sort |
Interaction of Chitosan with mono and di- valent anions in aqueous solution studied by cyclic voltammetry at a water/1,2-dichloroethane interface |
| dc.creator.none.fl_str_mv |
Riva, Jullieta Soledad Juárez, Ana Valeria Beltramo, Dante Miguel Yudi, Lidia Mabel |
| author |
Riva, Jullieta Soledad |
| author_facet |
Riva, Jullieta Soledad Juárez, Ana Valeria Beltramo, Dante Miguel Yudi, Lidia Mabel |
| author_role |
author |
| author2 |
Juárez, Ana Valeria Beltramo, Dante Miguel Yudi, Lidia Mabel |
| author2_role |
author author author |
| dc.subject.none.fl_str_mv |
liquid liquid/interface chitosan Picrate Eosin |
| topic |
liquid liquid/interface chitosan Picrate Eosin |
| 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 interaction of the cationic polyelectrolyte chitosan (CHI), of different molecular weights, with two anions, picrate (Pi−) and eosin (Eo2−), in water was analyzed at pH 2.50 and 5.00. For this purpose the anions transfer current across a water/1,2-dichloroethane interface was employed to quantify anions concentration in absence or in presence of CHI. When CHI was added in increasing amounts to aqueous solutions containing Eo2− or Pi−, a gradual decrease in current values was observed, evidencing the binding ofthe anions to the polymer. This effectwasmore important atlowpH values and for CHIwith the highest molecular weight. From the results it is concluded that the interaction Eo2−-CHI is stronger than the corresponding to Pi−, probably due to the higher negative charge, and therefore themore pronounced hydrophilic nature of the first anion, which could lead to favour the electrostatic interactions with the cationic polyelectrolyte. Fil: Riva, Jullieta Soledad. 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: Juárez, Ana Valeria. 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: Beltramo, Dante Miguel. Provincia de Córdoba. Ministerio de Ciencia y Técnica. Centro de Excelencia En Productos y Procesos de Córdoba. Laboratorio de Biotecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Yudi, Lidia Mabel. 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 interaction of the cationic polyelectrolyte chitosan (CHI), of different molecular weights, with two anions, picrate (Pi−) and eosin (Eo2−), in water was analyzed at pH 2.50 and 5.00. For this purpose the anions transfer current across a water/1,2-dichloroethane interface was employed to quantify anions concentration in absence or in presence of CHI. When CHI was added in increasing amounts to aqueous solutions containing Eo2− or Pi−, a gradual decrease in current values was observed, evidencing the binding ofthe anions to the polymer. This effectwasmore important atlowpH values and for CHIwith the highest molecular weight. From the results it is concluded that the interaction Eo2−-CHI is stronger than the corresponding to Pi−, probably due to the higher negative charge, and therefore themore pronounced hydrophilic nature of the first anion, which could lead to favour the electrostatic interactions with the cationic polyelectrolyte. |
| publishDate |
2011 |
| dc.date.none.fl_str_mv |
2011-10 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/280887 Riva, Jullieta Soledad; Juárez, Ana Valeria; Beltramo, Dante Miguel; Yudi, Lidia Mabel; Interaction of Chitosan with mono and di- valent anions in aqueous solution studied by cyclic voltammetry at a water/1,2-dichloroethane interface; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 59; 10-2011; 39-44 0013-4686 CONICET Digital CONICET |
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http://hdl.handle.net/11336/280887 |
| identifier_str_mv |
Riva, Jullieta Soledad; Juárez, Ana Valeria; Beltramo, Dante Miguel; Yudi, Lidia Mabel; Interaction of Chitosan with mono and di- valent anions in aqueous solution studied by cyclic voltammetry at a water/1,2-dichloroethane interface; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 59; 10-2011; 39-44 0013-4686 CONICET Digital CONICET |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
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info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0013468611015271 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.electacta.2011.10.023 |
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Pergamon-Elsevier Science Ltd |
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