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dc.contributor.author
Castillo, Luciana Andrea  
dc.contributor.author
Lescano, Leticia  
dc.contributor.author
Marfil, Silvina Andrea  
dc.contributor.author
Barbosa, Silvia Elena  
dc.date.available
2023-07-11T15:43:47Z  
dc.date.issued
2022-06  
dc.identifier.citation
Castillo, Luciana Andrea; Lescano, Leticia; Marfil, Silvina Andrea; Barbosa, Silvia Elena; Sepiolite nanofibers structure. From tridimensional networks to bidimensional layers; Elsevier Science; Applied Clay Science; 228; 6-2022; 1-9  
dc.identifier.issn
0169-1317  
dc.identifier.uri
http://hdl.handle.net/11336/203289  
dc.description.abstract
The aim of this work is to obtain tridimensional (3D) networks and bidimensional (2D) layered structures from hydrogels containing high aspect ratio sepiolite nanofibers. In this sense, it is proposed an appropriate methodology by applying an oscillating shear strain field to sepiolite hydrogels which were previously obtained by sonication. The gel stability is crucial in the final structure of the spatial arrangement. Then, the influence of sepiolite concentration and shear field on hydrogel stability is assessed by studying its rheological properties in order to determine the process window to obtain 3D or 2D final nanostructure. Three hydrogels with different concentrations (0.002; 0.02 and 0.2 g sepiolite/mL water) of high aspect ratio sepiolite were analyzed. A direct relationship among the hydrogel concentration and stability gives a tool to obtain 2D or 3D nanostructures. Hydrogels with low sepiolite concentration (0.002 and 0.02 g/mL) under shear field break, giving 2D layered structure. Meanwhile, high sepiolite concentration hydrogel (0.2 g/mL) preserves 3D networks since it does not break under the applied shear field. The comparison of final structures, before and after shear field application, was performed by analyzing the corresponding dried hydrogels by Scanning Electronic Microscopy. A versatile method was proposed to prepare 2D and 3D structures from high aspect ratio sepiolite nanofibers. It is possible to tailor the final nanofibers spatial arrangement from a combination of particle concentration and applied shear field. As a consequence, the processing window as shear field for each desired final arrangement can be assessed depending on particle concentration.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Elsevier Science  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
2D LAYERS, 3D NETWORK  
dc.subject
SEPIOLITE  
dc.subject
SHEAR FIELD APPLICATION  
dc.subject
SONICATION  
dc.subject
SPATIAL ARRANGEMENT  
dc.subject.classification
Ingeniería de los Materiales  
dc.subject.classification
Ingeniería de los Materiales  
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS  
dc.title
Sepiolite nanofibers structure. From tridimensional networks to bidimensional layers  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2023-07-07T18:23:25Z  
dc.journal.volume
228  
dc.journal.pagination
1-9  
dc.journal.pais
Países Bajos  
dc.journal.ciudad
Amsterdam  
dc.description.fil
Fil: Castillo, Luciana Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina  
dc.description.fil
Fil: Lescano, Leticia. Universidad Nacional del Sur. Departamento de Geología; Argentina  
dc.description.fil
Fil: Marfil, Silvina Andrea. Universidad Nacional del Sur. Departamento de Geología; Argentina  
dc.description.fil
Fil: Barbosa, Silvia Elena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina  
dc.journal.title
Applied Clay Science  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0169131722001909?dgcid=author  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.clay.2022.106595