1. Department of Fiber Science and Apparel Design, Cornell University, Ithaca, New York 14853, United States
2. Department of Earth and Atmospheric Science, Cornell University, Ithaca, New York 14853, United States
3. Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing, Jiangsu, 210037, P.R.China
4. Department of Forest Biomaterials, North Carolina State University, Campus Box 8005, Raleigh, North Carolina 27695-8005, United States
5. Department of Forest Products Technology, Faculty of Chemistry and Materials Sciences, Helsinki University of Technology, P.O. Box 3320, FIN-02015 TKK, Espoo, Finland