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Toughening of cellulose nanofiber films
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
Luleå University of Technology.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
2014 (English)Conference paper, Presentation (Refereed)
Abstract [en]

Cellulose nanofibers (CNF) forms strong and stiff films but the toughness of the films needs to be improved if foldable applications are of interest. Preliminary results have shown that the use of plasticizers can increase the toughness of cellulose nanofiber composites. Investigated in this study is the mechanism behind this effect. Different plasticizers with different molecular weights are used to improve the flexibility of the cellulose nanofiber films. Cellulose nanofiber suspensions with varied plasticizer contents are prepared and the films are produced by vacuum filtering and pressing. The toughening effect of the used plasticizers on the CNF films is studied using tensile and falling weight impact testing. This toughening is related to the film morphology using high resolution scanning electron microscopy (HR-SEM) and to the individual CNF surface using atomic force microscopy (AFM).

Place, publisher, year, edition, pages
2014.
Research subject
Wood and Bionanocomposites
Identifiers
URN: urn:nbn:se:ltu:diva-38250Local ID: c952940e-3f7e-4c9e-bfd2-7099cefdb6eeOAI: oai:DiVA.org:ltu-38250DiVA: diva2:1011749
Conference
American Chemical Society National Meeting : Chemistry & Materials for Energy 16/03/2014 - 20/03/2014
Note
Godkänd; 2014; 20141014 (nather)Available from: 2016-10-03 Created: 2016-10-03Bibliographically approved

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