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dc.contributor.authorVarela-Feijoo, Alberto
dc.contributor.authorLopez-Lopez, Modesto T
dc.contributor.authorGalindo-Gonzalez, Cecilia
dc.contributor.authorStange, Stéphanie
dc.contributor.authorNguyen, Thi Thuy
dc.contributor.authorMammeri, Fayna
dc.contributor.authorAmmar-Merah, Souad
dc.contributor.authorPonton, Alain
dc.date.accessioned2021-04-14T06:54:04Z
dc.date.available2021-04-14T06:54:04Z
dc.date.issued2020-02
dc.identifier.citationRheologica Acta (2020) 59:165–176es_ES
dc.identifier.urihttp://hdl.handle.net/10481/67935
dc.description.abstractThis study investigated the steady shear flow and viscoelastic properties of composite materials elaborated by introduction of positively charged polyol-made maghemite nanoparticles (NPs) in aqueous solutions of negatively charged sodium alginate polymers. Two different ligands were covalently attached to the particle surface, the 3-aminopropyl triethyloxysilane (APTES) and the 3,4-dihydroxyphenylethylamine (DOPA), and their effect on the general rheological and magneto-rheological behaviors of the resulting composites was highlighted. Indeed, the experiments revealed that the increase of low shear viscosity and the viscoelastic moduli in the linear viscoelastic domain can be correlated to the nature of the two ligands inducing either compact or loose aggregates between positively charged NPs and negatively charged biopolymer chains. These field-induced microstructures have been qualitatively observed by optical microscopy under applied magnetic field.es_ES
dc.description.sponsorshipM.T. Lopez-Lopez received financial support by project FIS2017-85954-R (Ministerio de Economía, Industria y Competitividad, MINECO, and Agencia Estatal de Investigación, AEI, Spain, cofunded by Fondo Europeo de Desarrollo Regional, FEDER, European Union).es_ES
dc.language.isoenges_ES
dc.titleRheological investigation of magnetic sensitive biopolymer composites: effect of the ligand grafting of magnetic nanoparticleses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES
dc.identifier.doi10.1007/s00397-020-01191-y
dc.type.hasVersioninfo:eu-repo/semantics/acceptedVersiones_ES


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