1. Department of Rubber Technology and Polymer Science, Faculty of Science and Technology; Prince of Songkla University; Pattani Campus, Pattani 94000 Thailand
2. Research and Development Center; Innovation Group (Thailand) Company Limited; Bangkok 10240 Thailand
3. Faculty of Science and Industrial Technology; Prince of Songkla University; Surat Thani Campus, Surat Thani 84000 Thailand
4. Department of Materials Science and Technology, Faculty of Science; Prince of Songkla University; Hatyai Campus, Songkhla 90110 Thailand