1. Department of Polymer Engineering; University of Akron; Akron Ohio 44325
2. Center of Hydrogen Energy; Institute of Future Energy, Universiti Teknologi Malaysia; 54100 Kuala Lumpur Malaysia
3. Malaysia-Japan International Institute of Technology; Universiti Teknologi Malaysia; 54100 Kuala Lumpur Malaysia
4. Iran Polymer and Petrochemical Institute; P.O. Box 14965/115 Tehran Iran