1. Department of Polymer Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan; Department of Material Science and Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan; Plastics Development and Technology Center, Asahi Chemical Industry Co., Ltd., Yako, Kawasaki-ku, Kawasaki 210-0863, Japan; and Department of Material Science and Engineering, Shibaura Institute of Technology, Shibaura, Minato-ku, Tokyo 108-8548, Japan