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Elastic properties of cellulose nanopaper
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).ORCID iD: 0000-0003-3611-2250
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).
KTH, School of Chemical Science and Engineering (CHE), Centres, Wallenberg Wood Science Center.
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology. Linköping University, Sweden.
2012 (English)In: Cellulose (London), ISSN 0969-0239, E-ISSN 1572-882X, Vol. 19, no 3, 793-807 p.Article in journal (Refereed) Published
Abstract [en]

Nanopaper is a transparent film made of network-forming nanocellulose fibers. These fibers are several micrometers long with a diameter of 4-50 nm. The reported elastic modulus of nanopaper often falls short of even conservative theoretical predictions based on the modulus of crystalline cellulose, although such predictions usually perform well for other fiber composite materials. We investigate this inconsistency and suggest explanations by identifying the critical factors affecting the stiffness of nanopaper. A similar inconsistency is found when predicting the stiffness of conventional paper, and it is usually explained by the effects introduced during drying. We found that the effect of the drying cannot solely explain the relatively low elastic modulus of nanopaper. Among the factors that showed the most influence are the presence of non-crystalline regions along the length of the nanofibers, initial strains and the three-dimensional structure of individual bonds.

Place, publisher, year, edition, pages
Springer , 2012. Vol. 19, no 3, 793-807 p.
Keyword [en]
Nanopaper, Nanocellulose, Elastic properties, Fiber network model
National Category
Applied Mechanics
URN: urn:nbn:se:kth:diva-93964DOI: 10.1007/s10570-012-9685-5ISI: 000303459200021ScopusID: 2-s2.0-84860375255OAI: diva2:524654

QC 20120607

Available from: 2012-05-03 Created: 2012-05-03 Last updated: 2016-04-26Bibliographically approved

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Kulachenko, ArtemDenoyelle, ThibaudGalland, SylvainLindström, Stefan B.
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Solid Mechanics (Dept.)Wallenberg Wood Science CenterFibre and Polymer Technology
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Cellulose (London)
Applied Mechanics

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