Abstract
TEMPO-oxidized cellulose nanofibers (TOCN) were obtained from commercial Norway spruce and mixed Eucalyptus cellulose pulps using TEMPO/sodium bromide (NaBr)/sodium hypochlorite (NaClO) system at pH 10 and 22 °C. After reaction, the fibrillated TEMPO-oxidized celluloses were used for preparation of self-standing films and casting of laminate films on 50 μm thick polyethylene terephthalate. Significant differences between N. spruce and Eucalyptus TOCN were registered. The tensile strength of the films showed a maximum value for spruce samples oxidized with addition of 10 mmol g−1 of NaClO. Oxygen permeability decreased with increasing oxidation levels, being lower for N. spruce TOCN compared to Eucalyptus.
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The authors would like to thank all the members of Prof. Isogai’s laboratory (The University of Tokyo) for valuable assistance during the experimental work, Prof. Torbjørn Helle for linguistic help and the project partners in the SustainBarrier project at PFI for the financial support.
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Rodionova, G., Saito, T., Lenes, M. et al. Mechanical and oxygen barrier properties of films prepared from fibrillated dispersions of TEMPO-oxidized Norway spruce and Eucalyptus pulps. Cellulose 19, 705–711 (2012). https://doi.org/10.1007/s10570-012-9664-x
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DOI: https://doi.org/10.1007/s10570-012-9664-x