Journal
ADVANCED MATERIALS
Volume 27, Issue 12, Pages 2070-2076Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201404565
Keywords
cellulose nanofibrils; mechanical properties; optical haze; orientation; surface modification
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Funding
- EU [263017]
- Swedish Research Council Formas [2009-1687]
- Wallenberg Wood Science Center
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A macroscopic ribbon of oriented cellulose nanofibrils bearing polyethylene glycol is fabricated by stretching the cellulose nanofibrils network structure in the hydrogel state. The covalently grafted polyethylene glycol on the nanofibril surface facilitates the alignment and compartmentalization of individual nanofibrils in the ribbon. The ribbon has ultrahigh tensile strength (576 +/- 54 MPa), modulus (32.3 +/- 5.7 GPa), high transparency, and haze.
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