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dc.contributor.authorCusola Aumedes, Oriol
dc.contributor.authorRoncero Vivero, María Blanca
dc.contributor.authorVidal Lluciá, Teresa
dc.contributor.authorRojas, Orlando J.
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera
dc.date.accessioned2015-02-11T11:37:53Z
dc.date.created2014-10-01
dc.date.issued2014-10-01
dc.identifier.citationCusola, O. [et al.]. A facile and green method to hydrophobize films of cellulose nanofibrils and silica by laccase-mediated coupling of nonpolar colloidal particles. "ChemSusChem (Weinheim. Print)", 01 Octubre 2014, vol. 7, núm. 10, p. 2868-2878.
dc.identifier.issn1864-5631
dc.identifier.urihttp://hdl.handle.net/2117/26298
dc.description.abstractHydrophobic particles based on dodecyl 3,4,5-trihydroxybenzoate (LG) were coupled onto the surface of cellulose nanofibrils (CNFs) and silica by treatment with a multicomponent colloidal system (MCS) derived from the laccase-mediated reaction of LG in the presence of a sulfonated lignin (SL). Surface modification upon treatment with MCS was monitored insitu and in real time by quartz crystal microgravimetry. The colloidal stability of MCS and its components in water was followed by measuring space- and time-resolved light transmission and back scattering. The sulfonated lignin increased dispersion stability and reduced the characteristic MCS particle size [from approximate to 4 to approximate to 80nm, according to AFM and dynamic light scattering (DLS)]. It also facilitated the surface enzymatic reaction that led to adsorption and coupling of MCS onto CNFs and silica surfaces. The combined effect of reduced surface energy and surface roughness by MCS treatment produced an increase in water contact angle on CNFs and silica of about 90 and 80 degrees, respectively. Surface pretreatment with chitosan further increased the extent of MCS adsorption on the surfaces. This method represents a sustainable alternative to traditional approaches for cellulose hydrophobization and a step forward in implementing green routes for surface modification.
dc.format.extent11 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Enginyeria paperera::Primeres matèries papereres::Cel·lulosa
dc.subject.lcshFibers
dc.subject.lcshNanofibers
dc.subject.lcshPaper
dc.subject.lcshWood--Chemistry
dc.subject.lcshCellulose--Chemistry
dc.subject.otheradsorption
dc.subject.otherbiocatalysis
dc.subject.otherhydrophobization
dc.subject.otherenzymes
dc.subject.othernanoparticles
dc.subject.othernatural fibers
dc.subject.otherfunctionalization
dc.subject.othercompound
dc.subject.othercoatings
dc.subject.othergallate
dc.subject.otherlignin
dc.titleA facile and green method to hydrophobize films of cellulose nanofibrils and silica by laccase-mediated coupling of nonpolar colloidal particles
dc.typeArticle
dc.subject.lemacCel·lulosa -- Química
dc.subject.lemacNanofibres
dc.subject.lemacPasta de paper
dc.contributor.groupUniversitat Politècnica de Catalunya. CELBIOTECH - Grup de Recerca: Enginyeria Paperera
dc.identifier.doi10.1002/cssc.201402432
dc.rights.accessRestricted access - publisher's policy
drac.iddocument15272921
dc.description.versionPostprint (published version)
dc.date.lift10000-01-01
upcommons.citation.authorCusola, O.; Roncero, M.; Vidal, T.; Rojas, O. J.
upcommons.citation.publishedtrue
upcommons.citation.publicationNameChemSusChem (Weinheim. Print)
upcommons.citation.volume7
upcommons.citation.number10
upcommons.citation.startingPage2868
upcommons.citation.endingPage2878


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