1. Department of Aerospace Engineering, Tohoku University, 6-6-01, Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan
2. Chemical Research Laboratories, Nissan Chemical Corporation, 10-1, Tsuboi-Nishi 2-chome, Funabashi, Chiba 274-8507, Japan
3. Department of Chemistry, Tohoku University, 6-3, Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
4. Research Center for Green X-Tech, Tohoku University, 468-1, Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8572, Japan
5. Department of Materials Science and Engineering, University of Washington, BOX 352120, Seattle, WA 98195-1750, USA
6. Research Center for Structural Materials, Polymer Matrix Hybrid Composite Materials Group, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan