1. Carbon Composite Materials Research Center, Institute of Advanced Composite Materials; Korea Institute of Science and Technology (KIST); 92 Chudong-ro, Bongdong-eup Wanju-gun Jeonbuk 565-905 Republic of Korea
2. Department of Organic Materials and Fiber Engineering; Chonbuk National University; 567 Baekje-daero Deokjin-gu Jeonju-si, Jeonbuk 570-752 Republic of Korea