1. Department of Bio-chemical and Polymer Engineering
2. Chosun University
3. Gwangju 501-759
4. Republic of Korea
5. Radiation Research Division for Industry and Environment
6. Advanced Radiation Technology Institute
7. Korea Atomic Energy Research Institute
8. Jeongeup-si
9. Department of Polymer Science and Engineering
10. Chungnam National University
11. Daejeon 305-764