1. Polymer Subcommittee in the Industrial Technology Cooperative Promotion Committee, Umezono 1-1-1, Tsukuba, Ibaraki 305-8560, Japan
2. Tokyo Metropolitan Industrial Technology Research Institute, Aomi 2-4-10, Koto-ku, Tokyo 135-0064, Japan
3. National Institute of Advanced Industrial Science and Technology (AIST), Higashi 1-1-1, Tsukuba, Ibaraki 305-8565, Japan
4. Yamagata University, Jonan 4-3-16, Yonezawa, Yamagata 992-8510, Japan