1. a Marine Biopress Research Center , Pukyong National University , Busan, 608–737, Korea
2. b BK21 FTIT, Department of Advanced Organic Materials and Textile system Engineering , Chungnam National University , Daejeon, Republic of Korea
3. c Department of Organic Material Science and Engineering , Pusan National University , Busan, 609–735, Korea
4. d Department of Mechanical Engineering , Pusan National University , Busan, Republic of Korea