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