Cellulose nanofibril films as templates for functional membranes

Minna Hakalahti, Tuomas Hänninen, Arto Salminen, Andreas Mautner, Alexander Bismarck, Tekla Tammelin

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

    Abstract

    A water stable nanocellulose film was prepared and used as a template for functional membrane material. A simple method to considerably improve water stability of 2,2,6,6-tetramethylpiperidin-1-yl)oxy (TEMPO) oxidized cellulosic nanofibril films was applied. The method involved the use of a 10-25% of poly(vinyl alcohol) (PVA) as bridging agent in films, which were prepared by solvent casting without additional post-treatments. The influence of amount and degree of hydrolysis of PVA on mechanical properties of wet films was studied. Due to numerous functional groups on the surface of the water stable, porous film, it could be used as a template for functional membrane materials with respect to ion capturing. Further functionalization of the film surface could be done by grafting thermoresponsive poly(N-isopropylacrylamide) (PNIPAM) to pursue improved control over hydrophilicity of the surface for antifouling purposes.
    Original languageEnglish
    Title of host publicationProceedings of the 18th International Symposium on Wood, Fibre and Pulp Chemistry
    Subtitle of host publicationISWFPC 2015
    EditorsJ. Hell, S. Böhmdorfer, Antje Potthast, T. Rosanau
    Place of PublicationVienna, Austria
    PublisherUniversity of Natural Resources and Life Sciences BOKU
    Pages60-62
    Number of pages3
    ISBN (Print)978-3-900932-24-4
    Publication statusPublished - Sep 2015
    MoE publication typeB3 Non-refereed article in conference proceedings
    Event18th International Symposium on Wood, Fibre and Pulping Chemistry, ISWFPC 2015 - Vienna, Austria
    Duration: 9 Sep 201511 Sep 2015

    Conference

    Conference18th International Symposium on Wood, Fibre and Pulping Chemistry, ISWFPC 2015
    Abbreviated titleISWFPC 2015
    CountryAustria
    CityVienna
    Period9/09/1511/09/15

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  • Cite this

    Hakalahti, M., Hänninen, T., Salminen, A., Mautner, A., Bismarck, A., & Tammelin, T. (2015). Cellulose nanofibril films as templates for functional membranes. In J. Hell, S. Böhmdorfer, A. Potthast, & T. Rosanau (Eds.), Proceedings of the 18th International Symposium on Wood, Fibre and Pulp Chemistry: ISWFPC 2015 (pp. 60-62). University of Natural Resources and Life Sciences BOKU.