1. Renewable Materials and Nanotechnology Research Group, Department of Chemical Engineering, KU Leuven, Campus Kulak Kortrijk, Etienne Sabbelaan 53, P.O. Box 7659, 8500 Kortrijk, Belgium
2. Wallenberg Wood Science Center, KTH, Teknikringen 58, SE-100 44 Stockholm, Sweden
3. Fibre and Polymer Technology, KTH Royal Institute of Technology, Teknikringen 56-58, SE-100 44 Stockholm, Sweden