Multilayer biopolymer membranes containing copper for antibacterial applications

dc.creatorde Paiva, RG
dc.creatorde Moraes, MA
dc.creatorde Godoi, FC
dc.creatorBeppu, MM
dc.date2012
dc.dateOCT 25
dc.date2014-08-01T18:41:14Z
dc.date2015-11-26T18:03:21Z
dc.date2014-08-01T18:41:14Z
dc.date2015-11-26T18:03:21Z
dc.date.accessioned2018-03-29T00:45:13Z
dc.date.available2018-03-29T00:45:13Z
dc.identifierJournal Of Applied Polymer Science. Wiley-blackwell, v. 126, n. E17, n. E24, 2012.
dc.identifier0021-8995
dc.identifierWOS:000306398600004
dc.identifier10.1002/app.36666
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/82158
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/82158
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1292512
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionChitosan/alginate multilayer dense membranes, with micrometric thicknesses, were produced by casting the solution of each polymer alternately on a Petri dish. Copper ions were also incorporated into these membranes, which were then characterized with regard to morphology, chemical and crystallographic structures, ions diffusivity, and bacteriostatic properties. Results indicate that the casting approach for multilayers production was successful, since the membranes produced were formed by organized and alternated polymer layers. The pH dependence of the metal adsorption resulted in a higher concentration of the copper in the alginate layers, as shown by SEM-EDS (scanning electron microscopy - energy dispersive X-ray spectroscopy) analysis. Fourier transformed infrared spectroscopy confirmed the Coulombic interaction between the chitosan amino groups and sodium alginate carboxyl groups. The copper ions were distributed homogeneously, without the formation of clusters, and were bound mainly to oxygen and nitrogen atoms located on the alginate and chitosan functional groups, respectively, according to extended X-ray absorption fine structure (EXAFS) results. The antibacterial properties of this membrane indicate that this material may hold promise for numerous applications, such as for water treatment or antibacterial functional coatings with controlled release. (c) 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
dc.description126
dc.description1
dc.descriptionSI
dc.descriptionE17
dc.descriptionE24
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.languageen
dc.publisherWiley-blackwell
dc.publisherHoboken
dc.publisherEUA
dc.relationJournal Of Applied Polymer Science
dc.relationJ. Appl. Polym. Sci.
dc.rightsfechado
dc.rightshttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dc.sourceWeb of Science
dc.subjectadsorption
dc.subjectmembranes
dc.subjectbiopolymers
dc.subjectchitosan
dc.subjectalginate
dc.subject2-ply Composite Membranes
dc.subjectChitosan-alginate
dc.subjectControlled-release
dc.subjectPervaporation Dehydration
dc.subjectPolyelectrolyte Complexes
dc.subjectFilms
dc.subjectAdsorption
dc.subjectMixtures
dc.subjectMicrocapsules
dc.subjectIsopropanol
dc.titleMultilayer biopolymer membranes containing copper for antibacterial applications
dc.typeArtículos de revistas


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