[1] Gunma Prefectural Text Res Inst, Kiryu, Gunma 3760011, Japan
[2] Gunma Univ, Grad Sch Engn, Gunma 3768515, Japan
[3] Kyoto Inst Technol, R&D Ctr Biobased Mat, Sakyo Ku, Kyoto 6068585, Japan
[4] Kyoto Inst Technol, Ctr Fiber & Text Sci, Sakyo Ku, Kyoto 6068585, Japan