1. Fiber and Polymer Science, NC State University, Campus Box 7616, Raleigh, North Carolina 27695, United States
2. Department of Forest Biomaterial, NC State University, Campus Box 8005, Raleigh, North Carolina 27695, United States
3. State Key Laboratory of Bio-Based Materials & Green Papermaking, Qilu University of Technology/Shandong Academy of Sciences, Jinan 250353, P. R. China