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dc.contributor.authorMolina Mansilla, Ricardo-
dc.contributor.authorEspinós, J.P.-
dc.contributor.authorYubero, Francisco-
dc.contributor.authorErra Serrabasa, Pilar-
dc.contributor.authorGonzález-Elipe, Agustín R.-
dc.date.accessioned2009-08-19T07:32:44Z-
dc.date.available2009-08-19T07:32:44Z-
dc.date.issued2005-06-04-
dc.identifier.citationApplied Surface Science 252(5): 1417-1429 (2005)en_US
dc.identifier.issn0169-4332-
dc.identifier.urihttp://hdl.handle.net/10261/16062-
dc.description13 pages, 12 figures, 4 tables.-- Printed version published Dec 15, 2005.en_US
dc.description.abstractA microwave plasma treatment in a down stream configuration was used to modify the natural hydrophobocity of untreated wool fibers. This property is a consequence of the presence of a Fatty acid monolayer (F-layer) on the outermost part of the fiber surface. The wool fibers treated with plasma were analyzed by means of X-ray photoelectron spectroscopy (XPS) without previous exposure to the air. Experiments have been carried out with air, water vapor, oxygen and nitrogen as plasma gas. The “in situ” analysis of the treated samples has permitted to differentiate between the plasma effects and those other linked to the exposure of the fibers to the air after their treatment. The results have evidenced the effects induced by the different active species generated by plasma from the different components of the air. In general, the intensity of Csingle bondC peaks decreases and that of the Csingle bondO, Cdouble bond; length as m-dashO and Osingle bondCdouble bond; length as m-dashO increases when using a gas containing oxygen species. Simultaneously, the intensity of the Ssingle bondS groups decreases and that of the sulphonate (SO3−) increases. Other changes are also detected in the intensity of the N 1s level. The extent and characteristics of the oxidation and functionalisation of the hydrocarbon chains of the F-layer depend on the nature of gas. Thus, whereas treatments with plasmas of air and water vapor strongly affect the hydrocarbon chains of the F-layer, oxygen is less effective in the oxidation process. It has been also noted that the active species formed in the nitrogen plasma do not induce any significant change in the surface composition of the wool fibers.en_US
dc.description.sponsorshipFinancial support by the CICYT (PN MAT 2002-02613 Project) and AGAUR from Catalonia Government (Fellowship for R. Molina).en_US
dc.format.extent22195 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.rightsclosedAccessen_US
dc.subjectPlasmaen_US
dc.subjectDown stream plasmaen_US
dc.subjectRemote plasmaen_US
dc.subjectWoolen_US
dc.subjectFatty acid monolayeren_US
dc.subjectXPSen_US
dc.subjectPolymeren_US
dc.subjectSurface functionalisationen_US
dc.subjectSurface etchingen_US
dc.titleXPS analysis of down stream plasma treated wool: Influence of the nature of the gas on the surface modification of woolen_US
dc.typeartículoen_US
dc.identifier.doi10.1016/j.apsusc.2005.02.147-
dc.description.peerreviewedPeer revieweden_US
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.apsusc.2005.02.147en_US
dc.type.coarhttp://purl.org/coar/resource_type/c_6501es_ES
item.openairetypeartículo-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextnone-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextNo Fulltext-
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