1. College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
2. The Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science, Fudan University, Shanghai 200433, China
3. Institute of Bio-energy, Hunan Academy of Forestry, Changsha 410083, China
4. Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China