[1] Air Force Research Laboratory, Polymer Branch (AFRL/MLBP), Wright Patterson Air Force Base, 2941 P Street, Dayton, OH 45433, United States
[2] Univ. of Dayton Research Institute, Non-Metallic Materials Division, Dayton, OH 45469-0168, United States
[3] University of Cincinnati, Dept. of Mat. Sci. and Engineering, Cincinnati, OH 45221-0018, United States
[4] National Taiwan University, Taipei, Taiwan