Cellulose nanopaper structures of high toughness
2008 (English)In: Biomacromolecules, ISSN 1525-7797, E-ISSN 1526-4602, Vol. 9, no 6, 1579-1585 p.Article in journal (Refereed) Published
Cellulose nanofibrils offer interesting potential as a native fibrous constituent of mechanical performance exceeding the plant fibers in current use for commercial products. In the present study, wood nanofibrils are used to prepare porous cellulose nanopaper of remarkably high toughness. Nanopapers of different porosities and from nanofibrils of different molar mass are prepared. Uniaxial tensile tests are performed and structure-property relationships are discussed. The high toughness of highly porous nanopaper is related to the nanofibrillar network structure and high mechanical nanofibril performance. Also, molar mass correlates with tensile strength. This indicates that nanofibril fracture controls ultimate strength. Furthermore, the large strain-to-failure means that mechanisms, such as interfibril slippage, also contributes to inelastic deformation in addition to deformation of the nanofibrils themselves.
Place, publisher, year, edition, pages
2008. Vol. 9, no 6, 1579-1585 p.
Cellulose; Deformation; Fibers; Fracture fixation; Molar mass; Petroleum products; Tensile strength; Tensile testing; American Chemical Society (ACS); Commercial products; High toughness; Inelastic deformations; Large strains; mechanical performances; Nano-fibrils; Nanofibrillar; Network structures; Plant fibers; Strength (IGC: D5/D6); Structure property relationships; ultimate strength; Uniaxial tensile testing
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-7910DOI: 10.1021/bm800038nISI: 000256635100011ScopusID: 2-s2.0-46849094688OAI: oai:DiVA.org:kth-7910DiVA: diva2:13080
QC 20100810. Uppdaterad från submitted till published (20100810).2008-01-212008-01-212010-08-10Bibliographically approved