1. College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350108, P. R. China
2. College of Chemical and Environmental Engineering, Anyang Institute of Technology, Anyang, Henan 455000, P. R. China
3. National Forestry and Grassland Administration Key Laboratory of Plant Fiber Functional Materials, Fuzhou, Fujian 350108, P. R. China