1. Discipline of Chemical Engineering, School of Engineering, University of KwaZulu-Natal, Howard College Campus, King George V Avenue, Durban 4041, South Africa
2. Department of Polymer Processing, Iran Polymer and Petrochemical Institute, P.O. Box 14965-115, Tehran, Iran
3. Department of Chemical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
4. Department of Process Engineering, NISOC Company, Ahvaz, Iran
5. Research and Development Manager -Teb Plastic Company- Tehran, Tehran, Iran