1. Department of Forest Biomaterials, North Carolina State University, Campus Box 8005, Raleigh, North Carolina 27695-8005, Nippon Paper Industries Co., Ltd., 1-2-2, Hitotsubashi, Chiyoda-ku, Tokyo 100-0003, Japan, Department of Chemical Engineering, Polytechnic School of São Paulo University, SP, Brazil, and Department of Forest Products Technology, Faculty of Chemistry and Materials Sciences, Helsinki University of Technology, P.O. Box 3320, FIN-02015 TKK, Espoo, Finland