1. State Key Laboratory for Modificaion of Chemical Fibers and Polymer Materials, Donghua University, 2999 Renmin Rd. North, Shanghai 201620, China
2. Center for Fiber and Textile Science, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
3. Department of Advanced Fibro-Science, Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan