1. Wallenberg Wood Science Center, Department of Fiber and Polymer Technology, School of Chemical Science and Engineering, KTH Royal Institute of Technology, SE-10044 Stockholm, Sweden
2. Beijing Engineering Research Center of Cellulose and its Derivatives, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
3. Department of Industrial and Materials Science, Chalmers University of Technology, SE-41296 Gothenburg, Sweden