1. Department of Chemical Engineering; Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Jalan Sungai Long, Bandar Sungai Long Cheras; Kajang 43000 Selangor, Malaysia
2. Radiation Processing Technology Division, Malaysian Nuclear Agency; Bangi, Kajang 43000 Selangor Malaysia
3. Department of Polymer Engineering, Faculty of Chemical Engineering; Universiti Teknologi Malaysia, 81310 UTM Skudai; Johor Malaysia