Understanding hemicellulose-cellulose interactions in cellulose nanofibril-based composites

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dc.contributor.author Lucenius, Jessica
dc.contributor.author Valle-Delgado, Juan José
dc.contributor.author Parikka, Kirsti
dc.contributor.author Österberg, Monika
dc.date.accessioned 2019-08-16T08:00:02Z
dc.date.available 2019-08-16T08:00:02Z
dc.date.issued 2019-11-01
dc.identifier.citation Lucenius , J , Valle-Delgado , J J , Parikka , K & Österberg , M 2019 , ' Understanding hemicellulose-cellulose interactions in cellulose nanofibril-based composites ' , Journal of Colloid and Interface Science , vol. 555 , pp. 104-114 . https://doi.org/10.1016/j.jcis.2019.07.053
dc.identifier.other PURE: 126167130
dc.identifier.other PURE UUID: abba8511-afdf-4260-9346-312be7a8a546
dc.identifier.other RIS: urn:16A947D8314E112C05A68E07E872C186
dc.identifier.other WOS: 000488652300011
dc.identifier.uri http://hdl.handle.net/10138/304668
dc.description.abstract Plant-based polysaccharides (cellulose and hemicellulose) are a very interesting option for the preparation of sustainable composite materials to replace fossil plastics, but the optimum bonding mechanism between the hard and soft components is still not well known. In this work, composite films made of cellulose nanofibrils (CNF) and various modified and unmodified polysaccharides (galactoglucomannan, GGM; hydrolyzed and oxidized guar gum, GGhydHox; and guar gum grafted with polyethylene glycol, GG-g-PEG) were characterized from the nano- to macroscopic level to better understand how the interactions between the composite components at nano/microscale affect macroscopic mechanical properties, like toughness and strength. All the polysaccharides studied adsorbed well on CNF, although with different adsorption rates, as measured by quartz crystal microbalance with dissipation monitoring (QCM-D). Direct surface and friction force experiments using the colloidal probe technique revealed that the adsorbed polysaccharides provided repulsive forces–well described by a polyelectrolyte brush model – and a moderate reduction in friction between cellulose surfaces, which may prevent CNF aggregates during composite formation and, consequently, enhance the strength of dry films. High affinity for cellulose and moderate hydration were found to be important requirements for polysaccharides to improve the mechanical properties of CNF-based composites in wet conditions. The results of this work provide fundamental information on hemicellulose-cellulose interactions and can support the development of polysaccharide-based materials for different packaging and medical applications. en
dc.format.extent 11
dc.language.iso eng
dc.relation.ispartof Journal of Colloid and Interface Science
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject 220 Industrial biotechnology
dc.subject Cellulose nanofibrils
dc.subject Hemicellulose
dc.subject Biocomposites
dc.subject Surface forces
dc.subject Friction
dc.subject Colloidal probe microscopy (CPM)
dc.subject Quartz crystal microbalance with dissipation (QCM-D)
dc.subject Wet strength
dc.subject OXIDATION
dc.subject LUBRICATION
dc.subject STABILITY
dc.subject FILMS
dc.subject PRODUCE
dc.subject XYLAN
dc.subject FORCES
dc.title Understanding hemicellulose-cellulose interactions in cellulose nanofibril-based composites en
dc.type Article
dc.contributor.organization Department of Food and Nutrition
dc.contributor.organization Carbohydrate Chemistry and Enzymology
dc.contributor.organization Staff Services
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1016/j.jcis.2019.07.053
dc.relation.issn 0021-9797
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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