1. Department of Materials Science, Faculty of Science; Chulalongkorn University; Bangkok 10330 Thailand
2. Faculty of Science, Program in Petrochemical and Polymer Science; Chulalongkorn University; Bangkok 10330 Thailand
3. MTEC, National Science and Technology Development Agency (NSTDA), Thailand Science Park; Klong Luang, Pathum Thani 12120 Thailand