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dc.contributor.author Mengatto, Luciano Nicolas
dc.contributor.author Ferreyra, Maria Graciela
dc.contributor.author Rubiolo, Amelia Catalina
dc.contributor.author Rintoul, Ignacio
dc.contributor.author Luna, Julio Alberto
dc.date.available 2017-01-06T15:01:11Z
dc.date.issued 2012-12
dc.identifier.citation Mengatto, Luciano Nicolas; Ferreyra, Maria Graciela; Rubiolo, Amelia Catalina; Rintoul, Ignacio; Luna, Julio Alberto; Hydrophilic and hydrophobic interactions in cross-linked chitosan membranes; Elsevier Science Sa; Materials Chemistry And Physics; 139; 1; 12-2012
dc.identifier.issn 0254-0584
dc.identifier.uri http://hdl.handle.net/11336/10906
dc.description.abstract Chitosan membranes with different cross-linking density were prepared by modifying cross-linking time. Sodium tripolyphosphate was the cross-linking agent. A pulsed nuclear magnetic resonance study was performed on uncross-linked and cross-linked membranes. Different fraction of water molecules were identified in different zones within the membranes. The ratio of water molecules per chitosan repeating unit were calculated. A maximum of twelve water molecules were tightly coordinated to the chitosan repeating unit. Also, a very small water molecule fraction was identified but it was mobile enough as not to contribute to the dipolar interactions. The cross-linking reaction could lead to the formation of hydrophilic and hydrophobic interactions. These two types of interactions could result in the coexistence of a network formed by hydrophilic and hydrophobic micropores. This knowledge could be useful for the interpretation of results of hydrophobic drugs permeation across hydrophilic membranes. For example, the increment of estradiol fluxes across chitosan membranes with an increase in cross-linking density.
dc.format application/pdf
dc.language.iso eng
dc.publisher Elsevier Science Sa
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject BIOMATERIALS
dc.subject POLYMERS
dc.subject NUCLEAR MAGNETIC RESONANCE (NMR)
dc.subject DIFFUSION
dc.subject.classification Otras Ingeniería Química
dc.subject.classification Ingeniería Química
dc.subject.classification INGENIERÍAS Y TECNOLOGÍAS
dc.title Hydrophilic and hydrophobic interactions in cross-linked chitosan membranes
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2017-01-05T15:02:45Z
dc.journal.volume 139
dc.journal.number 1
dc.journal.pais Países Bajos
dc.journal.ciudad Amsterdam
dc.description.fil Fil: Mengatto, Luciano Nicolas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina. Universidad Nacional del Litoral; Argentina
dc.description.fil Fil: Ferreyra, Maria Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina. Universidad Nacional del Litoral; Argentina
dc.description.fil Fil: Rubiolo, Amelia Catalina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina. Universidad Nacional del Litoral; Argentina
dc.description.fil Fil: Rintoul, Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina. Universidad Nacional del Litoral; Argentina
dc.description.fil Fil: Luna, Julio Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina. Universidad Nacional del Litoral; Argentina
dc.journal.title Materials Chemistry And Physics
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.matchemphys.2013.01.019
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0254058413000631


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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Atribución-NoComercial-SinDerivadas 2.5 Argentina (CC BY-NC-ND 2.5 AR)