1. Program in Petrochemistry and Polymer Science; Faculty of Science, Chulalongkorn University; 254 Phayathai Road Bangkok 10330 Thailand
2. Bangkok Synthetics Co., Ltd.; 5I-7, Map ta Phut Industrial Estate Muang District Rayong 21150 Thailand
3. Department of Chemical Technology; Faculty of Science; Chulalongkorn University; 254 Phayathai Road Bangkok 10330 Thailand
4. Department of Chemical Engineering; University of Waterloo; Ontario Canada N2L 3G1