1. Division of Materials Science, Department of Engineering Sciences and Mathematics, Luleå University of Technology, Luleå SE-971 87, Sweden
2. Wallenberg Wood Science Center, Department of Fiber and Polymer Technology, KTH Royal Institute of Technology, Stockholm SE-100 44, Sweden
3. Division of Glycoscience, Department of Chemistry, KTH Royal Institute of Technology, AlbaNova University Centre, Stockholm SE-106 91, Sweden
4. Fibre and Particle Engineering, University of Oulu, Oulu FI-90014, Finland