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.
|Title of host publication||Proceedings of the 18th International Symposium on Wood, Fibre and Pulp Chemistry|
|Subtitle of host publication||ISWFPC 2015|
|Editors||J. Hell, S. Böhmdorfer, Antje Potthast, T. Rosanau|
|Place of Publication||Vienna, Austria|
|Publisher||University of Natural Resources and Life Sciences BOKU|
|Number of pages||3|
|Publication status||Published - Sep 2015|
|MoE publication type||B3 Non-refereed article in conference proceedings|
|Event||18th International Symposium on Wood, Fibre and Pulping Chemistry, ISWFPC 2015 - Vienna, Austria|
Duration: 9 Sep 2015 → 11 Sep 2015
|Conference||18th International Symposium on Wood, Fibre and Pulping Chemistry, ISWFPC 2015|
|Abbreviated title||ISWFPC 2015|
|Period||9/09/15 → 11/09/15|
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.