Physicochemical aspects of epoxide driven nano-ZrO2 hydrogel formation: Milder kinetics for better properties
Robust and highly transparent quasi amorphous ZrO2-water-glycerol hydrogels were obtained in a mild one pot procedure, based on the 2,3-epoxy-1-propanol driven alkalinization. SAXS-based characterization of the sol-gel transition revealed that an homogeneously nucleated sol composed of 2 nm primary...
| Autores: | ; ; |
|---|---|
| Tipo de documento: | Artículo |
| Estado: | Published version |
| Fecha de publicación: | 2016 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Lenguaje: | Inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/59003 |
| Acceso en línea: | http://hdl.handle.net/11336/59003 |
| Nivel de acceso: | Acceso abierto |
| Palabra clave: | Hydrogels Saxs Gelification https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
| _version_ | 1878403525599297536 |
|---|---|
| author | Oestreicher, Víctor Santiago Jesús |
| author2 | Perullini, Ana Mercedes Jobbagy, Matias |
| author2_role | author author |
| author_browse | Jobbagy, Matias Oestreicher, Víctor Santiago Jesús Perullini, Ana Mercedes |
| author_facet | Oestreicher, Víctor Santiago Jesús Perullini, Ana Mercedes Jobbagy, Matias |
| author_role | author |
| collection | CONICET Digital (CONICET) |
| description | Robust and highly transparent quasi amorphous ZrO2-water-glycerol hydrogels were obtained in a mild one pot procedure, based on the 2,3-epoxy-1-propanol driven alkalinization. SAXS-based characterization of the sol-gel transition revealed that an homogeneously nucleated sol composed of 2 nm primary particles continuously grows up to a critical size of 5-6 nm, when gelation takes place. These particles reach a size of 8-10 nm, depending on the Zr(iv) concentration. Conductivity measurements offer an overall in situ assessment of the reaction rate. The gelled samples share a common trend: once the conductivity decays to 40% of the starting value, the primary particles nucleate and when this decay reaches 20%, the sol-gel transition takes place. The mild conditions employed herein prevent massive ripening and recrystallization leaving hydrogels with extremely low undesired visible light scattering. This suitable nanostructure was achieved in a wide range of total Zr(iv) concentrations or water to glycerol ratios. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | AR_8f0daa3fd89bc2e0e0c7d8a185fc264e |
| identifier_str_mv | Oestreicher, Víctor Santiago Jesús; Perullini, Ana Mercedes; Jobbagy, Matias; Physicochemical aspects of epoxide driven nano-ZrO2 hydrogel formation: Milder kinetics for better properties; Royal Society of Chemistry; Dalton Transactions; 45; 24; 3-2016; 9920-9924 1477-9226 CONICET Digital CONICET |
| institution | Consejo Nacional de Investigaciones Científicas y Técnicas |
| instname_str | Consejo Nacional de Investigaciones Científicas y Técnicas |
| language | eng |
| network_acronym_str | AR |
| network_name_str | Argentina |
| oai_identifier_str | oai:ri.conicet.gov.ar:11336/59003 |
| publishDate | 2016 |
| publishDateSort | 2016 |
| publisher | Royal Society of Chemistry |
| publisherStr | Royal Society of Chemistry |
| reponame_str | CONICET Digital (CONICET) |
| spelling | Physicochemical aspects of epoxide driven nano-ZrO2 hydrogel formation: Milder kinetics for better properties Oestreicher, Víctor Santiago Jesús Perullini, Ana Mercedes Jobbagy, Matias Hydrogels Saxs Gelification https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 Robust and highly transparent quasi amorphous ZrO2-water-glycerol hydrogels were obtained in a mild one pot procedure, based on the 2,3-epoxy-1-propanol driven alkalinization. SAXS-based characterization of the sol-gel transition revealed that an homogeneously nucleated sol composed of 2 nm primary particles continuously grows up to a critical size of 5-6 nm, when gelation takes place. These particles reach a size of 8-10 nm, depending on the Zr(iv) concentration. Conductivity measurements offer an overall in situ assessment of the reaction rate. The gelled samples share a common trend: once the conductivity decays to 40% of the starting value, the primary particles nucleate and when this decay reaches 20%, the sol-gel transition takes place. The mild conditions employed herein prevent massive ripening and recrystallization leaving hydrogels with extremely low undesired visible light scattering. This suitable nanostructure was achieved in a wide range of total Zr(iv) concentrations or water to glycerol ratios. Fil: Oestreicher, Víctor Santiago Jesús. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina Fil: Perullini, Ana Mercedes. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina Fil: Jobbagy, Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina. Centro Interdisciplinario de NanoCiencia y NanoTecnología; Argentina Royal Society of Chemistry http://hdl.handle.net/11336/59003 Oestreicher, Víctor Santiago Jesús; Perullini, Ana Mercedes; Jobbagy, Matias; Physicochemical aspects of epoxide driven nano-ZrO2 hydrogel formation: Milder kinetics for better properties; Royal Society of Chemistry; Dalton Transactions; 45; 24; 3-2016; 9920-9924 1477-9226 CONICET Digital CONICET |
| spellingShingle | Physicochemical aspects of epoxide driven nano-ZrO2 hydrogel formation: Milder kinetics for better properties Oestreicher, Víctor Santiago Jesús Hydrogels Saxs Gelification https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
| status_str | publishedVersion |
| title | Physicochemical aspects of epoxide driven nano-ZrO2 hydrogel formation: Milder kinetics for better properties |
| title_full | Physicochemical aspects of epoxide driven nano-ZrO2 hydrogel formation: Milder kinetics for better properties |
| title_fullStr | Physicochemical aspects of epoxide driven nano-ZrO2 hydrogel formation: Milder kinetics for better properties |
| title_full_unstemmed | Physicochemical aspects of epoxide driven nano-ZrO2 hydrogel formation: Milder kinetics for better properties |
| title_short | Physicochemical aspects of epoxide driven nano-ZrO2 hydrogel formation: Milder kinetics for better properties |
| title_sort | Physicochemical aspects of epoxide driven nano-ZrO2 hydrogel formation: Milder kinetics for better properties |
| topic | Hydrogels Saxs Gelification https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
| topic_facet | Hydrogels Saxs Gelification https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
| url | http://hdl.handle.net/11336/59003 |