1. Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products, Southwest Forestry University, Kunming, P. R. China
2. International Joint Research Center for Biomass Materials, Ministry of Science and Technology, Southwest Forestry University, Kunming, P. R. China
3. Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission; Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Minzu University, Nanning, P. R. China
4. Center for Renewable Carbon, The University of Tennessee, Knoxville, TN, USA