A study of the structural changes in a chitosan matrix produced by the adsorption of copper and chromium ions

dc.creatorAnbinder, Pablo Sebastián
dc.creatorMacchi, Carlos Eugenio
dc.creatorAmalvy, Javier
dc.creatorSomoza, Alberto Horacio
dc.date.accessioned2020-04-29T19:49:01Z
dc.date.accessioned2022-10-14T23:22:14Z
dc.date.available2020-04-29T19:49:01Z
dc.date.available2022-10-14T23:22:14Z
dc.date.created2020-04-29T19:49:01Z
dc.date.issued2019-10-15
dc.identifierAnbinder, Pablo Sebastián; Macchi, Carlos Eugenio; Amalvy, Javier; Somoza, Alberto Horacio; A study of the structural changes in a chitosan matrix produced by the adsorption of copper and chromium ions; Elsevier; Carbohydrate Polymers; 222; 15-10-2019; 1-7
dc.identifier0144-8617
dc.identifierhttp://hdl.handle.net/11336/103957
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/4318934
dc.description.abstractA study of the structural changes at micro- and nano-scale in a chitosan matrix after the adsorption of different metal ions is presented. Toward this aim, samples of chitosan films soaked in different concentrations of copper(II) and chromium(VI) aqueous solutions were prepared. Cu and Cr ions were selected as sorbates since they have different ionic properties. The effect of the adsorbed metal ions on the microstructure of the chitosan matrices were studied using Fourier transformed infrared spectroscopy, UV?vis spectroscopy, differential scanning calorimetry and thermogravimetric analysis. To go further into the study of the samples at the molecular level, the nuclear technique positron annihilation lifetime spectroscopy was used. Results are discussed in terms of the interaction between the metal ions and the chitosan functional groups.ChitosanPositron annihilation spectroscopyHeavy metal adsorptionStructural properties
dc.languageeng
dc.publisherElsevier
dc.relationinfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0144861719306472
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.carbpol.2019.114987
dc.rightshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectCHITOSAN
dc.subjectPOSITRON ANNIHILATION SPECTROSCOPY
dc.subjectMETAL ADSORPTION
dc.subjectSTRUCTURAL PROPERTIES
dc.titleA study of the structural changes in a chitosan matrix produced by the adsorption of copper and chromium ions
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


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