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dc.contributor.authorCusola Aumedes, Oriol
dc.contributor.authorValls Vidal, Cristina
dc.contributor.authorVidal Lluciá, Teresa
dc.contributor.authorTzanov, Tzanko
dc.contributor.authorRoncero Vivero, María Blanca
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.date.accessioned2015-10-22T10:53:35Z
dc.date.available2016-06-16T00:31:08Z
dc.date.issued2015-06-09
dc.identifier.citationCusola, O., Valls, C., Vidal, T., Tzanov, T., Roncero, M. Electrochemical insights on the hydrophobicity of cellulose substrates imparted by the enzymatically-oxidized gallates with increasing alkyl chain length. "ACS applied materials and interfaces", 09 Juny 2015, vol. 7, núm. 25, p. 13834-13841.
dc.identifier.issn1944-8244
dc.identifier.urihttp://hdl.handle.net/2117/78122
dc.description.abstractIn this work, we studied the influence of the alkyl chain length in enzymatically-oxidized gallates on the development of hydrophobicity on paper-based materials, and further correlated the obtained effect to the redox mechanism of the enzymatic treatment. Laccase (Lac) enzyme was used to oxidize various members of the gallate homologous series in the presence or not of lignosulfonates (SL) to produce several functionalization solutions (FS), which were subsequently applied to cellulosic substrates. The hydrophobicity of the substrates was then assessed by means of water drop test (WDT) and contact angle (WCA) measurements. Hydrophobicity peaked reaching WDT and WCA values around 5000 seconds and 130o respectively, and then decreased with increasing length of the hydrocarbon chain of gallate. Cyclic voltrammetry (CV) was used to study the effect of SL on the redox reactions of several gallates. The intensity of the anodic peak in their voltammograms decreased increasing the chain length of the gallate. The electrochemical behaviour of lauryl gallate (LG) differed from that of other gallates. The fact that the voltammetric curves for SL and LG intersected at a potential of 478 mV indicates an enhancing effect of SL on LG oxidation at high potentials (above 478 mV)
dc.format.extent8 p.
dc.language.isoeng
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria paperera::Primeres matèries papereres::Cel·lulosa
dc.subject.lcshGallates
dc.subject.lcshCellulose
dc.subject.lcshLaccase
dc.subject.otherLaccase
dc.subject.otherAlkyl gallates
dc.subject.otherCellulose
dc.subject.otherHydrophobicity
dc.subject.otherCyclic voltammetry
dc.titleElectrochemical insights on the hydrophobicity of cellulose substrates imparted by the enzymatically-oxidized gallates with increasing alkyl chain length
dc.typeArticle
dc.subject.lemacCel·lulosa
dc.contributor.groupUniversitat Politècnica de Catalunya. CELBIOTECH - Grup de Recerca: Enginyeria Paperera
dc.contributor.groupUniversitat Politècnica de Catalunya. GBMI - Grup de Biotecnologia Molecular i Industrial
dc.identifier.doi10.1021/acsami.5b01904
dc.relation.publisherversionhttp://pubs.acs.org/doi/abs/10.1021/acsami.5b01904
dc.rights.accessOpen Access
drac.iddocument16269790
dc.description.versionPostprint (author’s final draft)
upcommons.citation.authorCusola, O., Valls, C., Vidal, T., Tzanov, T., Roncero, M.
upcommons.citation.publishedtrue
upcommons.citation.publicationNameACS applied materials and interfaces
upcommons.citation.volume7
upcommons.citation.number25
upcommons.citation.startingPage13834
upcommons.citation.endingPage13841


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