1. Department of Polymer Science and Engineering
2. Inha University
3. Incheon 402-751
4. Korea
5. Department of Chemistry
6. Tshwane University of Technology
7. Pretoria
8. South Africa
9. DST/CSIR Innovation Centre
10. National Centre for Nanostructured Materials
11. Materials Science and Manufacturing
12. Council for Scientific and Industrial Research
13. Pretoria 0001