1. Chinese Academy of Forestry, Research Institute of Wood Industry, No. 1 Dongxiaofu Xiangshan Road, Haidian District, Beijing100091, P. R. China
2. Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Jiangsu Province Key Lab. of Biomass Energy and Materials, Nanjing, Jiangsu Province210042, PR China
3. School of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan Province410004, PR China