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dc.contributor.authorFernández Santos, Julia
dc.contributor.authorValls Vidal, Cristina
dc.contributor.authorCusola Aumedes, Oriol
dc.contributor.authorRoncero Vivero, María Blanca
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d’Enginyeria Gràfica i de Disseny
dc.date.accessioned2022-06-02T07:52:03Z
dc.date.available2022-06-02T07:52:03Z
dc.date.issued2022-06-30
dc.identifier.citationFernandez, J. [et al.]. Composites of cellulose nanocrystals in combination with either cellulose nanofibril or carboxymethylcellulose as functional packaging films. "International journal of biological macromolecules", 30 Juny 2022, vol. 211, p. 218-229.
dc.identifier.issn1879-0003
dc.identifier.urihttp://hdl.handle.net/2117/367950
dc.description.abstractCellulose nanocrystals (CNC) were mixed with either cellulose nanofibril (CNF) or carboxymethylcellulose (CMC) in variable proportions (0/100, 20/80, 40/60, 50/50, 60/40, 80/20 and 100/0) to obtain cast films with acceptable barrier and mechanical properties as replacements for food packaging plastics. Both CNF and CMC improved tensile strength, elongation, UV opacity, air resistance, hydrophobicity (WCA-water contact angle), water vapor transmission rate (WVTR) and oxygen impermeability in pure CNC. WVTR and oxygen permeability were strongly dependent on relative humidity (RH). Interestingly, the greatest effect on WVTR was observed at RH¿=¿90% in films containing CMC in proportions above 60%. CMC- and CNF-containing films had oxygen impermeability up to an RH level of 80% and 60%, respectively. The previous effects were confirmed by food packaging simulation tests, where CMC-containing films proved the best performers. The composite films studied were biodegradable—which constitutes a major environmental related advantage—to an extent proportional to their content in CMC or CNF
dc.description.sponsorshipThis publication is part of the PID2020-114070RB-I00 (CELLECO- PROD) project, funded by MCIN/AEI/10.13039/501100011033. The authors would also like to thank the consolidated research group AGAUR 2017 SGR 30 with Universitat de Barcelona (UB) and to the Serra Húnter Fellowship awarded to O. Cusola. With the support from the Secretariat for Universities and Research of the Ministry of Business and Knowledge of the Government of Catalonia and the European Social Fund
dc.format.extent12 p.
dc.language.isoeng
dc.publisherElsevier
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials
dc.subjectÀrees temàtiques de la UPC::Enginyeria paperera::Primeres matèries papereres
dc.subject.lcshCellulose
dc.subject.lcshFood -- Packaging
dc.subject.lcshNanotechnology
dc.subject.otherNanocellulose
dc.subject.otherCarboxymethylcellulose
dc.subject.otherBarrier properties
dc.subject.otherFood packaging
dc.titleComposites of cellulose nanocrystals in combination with either cellulose nanofibril or carboxymethylcellulose as functional packaging films
dc.typeArticle
dc.subject.lemacCel·lulosa
dc.subject.lemacAliments -- Envasament
dc.subject.lemacNanotecnologia
dc.contributor.groupUniversitat Politècnica de Catalunya. CELBIOTECH - Grup de Recerca: Enginyeria Paperera
dc.identifier.doi10.1016/j.ijbiomac.2022.05.049
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0141813022010091
dc.rights.accessOpen Access
local.identifier.drac33777871
dc.description.versionPostprint (published version)
dc.relation.projectidinfo:eu-repo/grantAgreement/AEI/2PE/PID2020-114070RB-I00
local.citation.authorFernandez, J.; Valls, C.; Cusola, O.; Roncero, M.B.
local.citation.publicationNameInternational journal of biological macromolecules
local.citation.volume211
local.citation.startingPage218
local.citation.endingPage229


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