The effect of residual lignin on the rheological properties of cellulose nanofibril suspensions

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dc.contributor.authorIglesias, Maria C.en
dc.contributor.authorShivyari, Niloofaren
dc.contributor.authorNorris, Annen
dc.contributor.authorMartin-Sampedro, Raquelen
dc.contributor.authorEugenio, M. E.en
dc.contributor.authorLahtinen, Panuen
dc.contributor.authorAuad, Maria L.en
dc.contributor.authorElder, Thomasen
dc.contributor.authorJiang, Zhihuaen
dc.contributor.authorFrazier, Charles E.en
dc.contributor.authorPeresin, Maria S.en
dc.contributor.departmentSustainable Biomaterialsen
dc.contributor.departmentMacromolecules Innovation Instituteen
dc.date.accessioned2021-03-09T14:27:50Zen
dc.date.available2021-03-09T14:27:50Zen
dc.date.issued2020-10-10en
dc.description.abstractAlthough the removal of lignin and hemicelluloses from cellulose pulp to produce fully bleached cellulose nanofibrils (B-CNF) is the most common practice, the presence of residual lignin and hemicelluloses in raw materials for the production of lignin containing cellulose nanofibrils (LCNFs) holds several advantages. In this work, we investigated the effect of residual lignin inEucalyptus globuluscellulose fibers on the properties of the resulting LCNFs. The stability of the colloidal suspensions was assessed by zeta-potential values and charge density analyses. Morphology of the CNFs was studied using scanning electron microscopy and atomic force microscopy. Fibril diameter and diameter distributions for CNFs with different levels of residual lignin showed a decrease on fiber diameter as the lignin content increases. Differences in the chemical composition of the CNFs was evidenced as indicated in the Fourier-transform infrared spectroscopy spectra, particularly in fingerprint region. Thermal behavior of the CNFs was not altered by the presence of lignin, as indicated by thermogravimetric analysis. Finally, the rheological behavior of the samples was evaluated observing a gel-like behavior as well as an increase of the viscosity in LCNFs with higher lignin contents.en
dc.description.adminPublic domain – authored by a U.S. government employeeen
dc.description.notesThis publication was supported by the Forest Service Sponsored Program (17-JV-11330131-006), the Alabama Agricultural Experiment Station, and the Hatch program of the National Institute of Food and Agriculture (ALA013-1-17003), United States Department of Agriculture. School of Forestry and Wildlife Sciences at Auburn University financial support to complete this work is greatly appreciated.en
dc.description.sponsorshipForest Service Sponsored Program [17-JV-11330131-006]; Alabama Agricultural Experiment Station; Hatch program of the National Institute of Food and Agriculture, United States Department of Agriculture [ALA013-1-17003]; School of Forestry and Wildlife Sciences at Auburn Universityen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1080/02773813.2020.1828472en
dc.identifier.eissn1532-2319en
dc.identifier.issn0277-3813en
dc.identifier.issue6en
dc.identifier.urihttp://hdl.handle.net/10919/102641en
dc.identifier.volume40en
dc.language.isoenen
dc.rightsPublic Domainen
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/en
dc.subjectLignin-containing cellulose nanofibrilsen
dc.subjectLCNFsen
dc.subjectrheologyen
dc.subjectresidual ligninen
dc.subjectligno-nanofibersen
dc.subjectcellulosic nanofibersen
dc.titleThe effect of residual lignin on the rheological properties of cellulose nanofibril suspensionsen
dc.title.serialJournal of Wood Chemistry and Technologyen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.dcmitypeStillImageen

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