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dc.contributor.author
Scanone, Ana Coral  
dc.contributor.author
Romeo, Hernan Esteban  
dc.contributor.author
Mendoza Zélis, Pedro  
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Hoppe, Cristina Elena  
dc.contributor.author
Gonzalez, Jimena Soledad  
dc.date.available
2024-11-29T11:13:46Z  
dc.date.issued
2023-07  
dc.identifier.citation
Scanone, Ana Coral; Romeo, Hernan Esteban; Mendoza Zélis, Pedro; Hoppe, Cristina Elena; Gonzalez, Jimena Soledad; The effect of processing design and the stabilizing effect of nanostructures on the swelling and adsorption properties of polyvinylpyrrolidone macroporous ferrogels obtained through a cryogenic route; John Wiley & Sons; Journal of Applied Polymer Science; 140; 39; 7-2023; 1-14  
dc.identifier.issn
0021-8995  
dc.identifier.uri
http://hdl.handle.net/11336/248979  
dc.description.abstract
This paper reports the synthesis of macroporous polyvinylpyrrolidone (PVP) hydrogels modified with in-situ generated magnetic nanoparticles (NPs). The hydrogels were formed by an optimized thermally induced crosslinking route, initiated by the presence of ammonium persulfate, whereas the macroporosity was created through a cryogenic technique. Crosslinking stabilizes the three dimensional (3D) gel structure, allowing the replacement of expensive and time-consuming lyophilization steps in favor of simpler drying procedures at atmospheric pressure. The in-situ formation of iron oxide NPs (IONPs) was achieved through oxide precursors impregnation followed by precipitation of the IONPs in the highly swellable hydrogels. This reaction was performed by addressing two strategies, namely, before or after cryogenic processing, to evaluate its effect on the final swelling and adsorption properties of the gel matrices. It is demonstrated that the inclusion of the magnetic NPs before cryo-structuring allows the stabilization of the gel against collapse, favoring the conservation of a highly swellable environment. The synergy between the adsorption capacity of the IONPs and the high swelling of the macroporous structure allows obtaining materials with potential in adsorption processes. Preliminary analyses showed that macroporous samples obtained with 32 wt% IONPs led to methylene blue (MB) adsorption capacities as high as 400 mg dye/g ferrogel, for dye concentrations as low as 10 mg/L. These results show that the use of an adequate strategy for the processing of macroporous ferrogels can be of high importance in the design of new adsorbents and superabsorbent hydrogels.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
John Wiley & Sons  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
POLY(VINYLPIRROLIDONE)  
dc.subject
GELS  
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MACROPOROUS FERROGELS  
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MAGNETIC NANOPARTICLES  
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SWELLING  
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ADSORPTION  
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Ingeniería de los Materiales  
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Ingeniería de los Materiales  
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INGENIERÍAS Y TECNOLOGÍAS  
dc.title
The effect of processing design and the stabilizing effect of nanostructures on the swelling and adsorption properties of polyvinylpyrrolidone macroporous ferrogels obtained through a cryogenic route  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2024-11-26T14:20:23Z  
dc.journal.volume
140  
dc.journal.number
39  
dc.journal.pagination
1-14  
dc.journal.pais
Estados Unidos  
dc.journal.ciudad
New York  
dc.description.fil
Fil: Scanone, Ana Coral. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina  
dc.description.fil
Fil: Romeo, Hernan Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina  
dc.description.fil
Fil: Mendoza Zélis, Pedro. Universidad Nacional de la Plata. Facultad de Cs.exactas. Instituto de Física de la Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina  
dc.description.fil
Fil: Hoppe, Cristina Elena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina  
dc.description.fil
Fil: Gonzalez, Jimena Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina  
dc.journal.title
Journal of Applied Polymer Science  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/app.54452  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1002/app.54452