1. Department
of Biomaterials Science, Graduate School of Agricultural and Life
Sciences, The University of Tokyo, Tokyo 113-8657, Japan
2. Department
of Forest Products Technology, School of Chemical Technology, Aalto University, FI-00076 Aalto, Finland
3. High
Performance Fibre Products, VTT Technical Research Center of Finland Ltd, FI-02044 VTT, Espoo, Finland