1. Universiti Malaysia Perlis, Faculty of Chemical Engineering, TechnologyKompleksPusatPengajian Taman Muhibah, 02600 Arau, Perlis, Malaysia
2. Universiti Malaysia Perlis, Advanced Polymer Group, Center of Excellence Geopolymer and Green Technology (CEGeoGTech), 02600 Arau, Perlis, Malaysia
3. Universiti Malaysia Perlis, Center of Excellence for Biomass Utilization (COEBU), 02600 Arau, Perlis, Malaysia
4. Universiti Kebangsaan Malaysia, Faculty of Science and Technology, School of Applied Physics, Material Science Programme, 43600 Bangi, Selangor, Malaysia
5. Częstochowa University of Technology, Department of Physics, 21 Armii Krajowej Av., 42-200 Częstochowa, Poland