1. Department of Chemical and Polymer Engineering, Faculty of EngineeringYazd University Yazd 891581–8411 Iran
2. Department of Polymer ProcessingIran Polymer and Petrochemical Institute P.O. Box 14965‐115 Tehran Iran
3. Leibniz Institute of Polymer Research Dresden, Hohe Straße 6 Dresden D‐01069 Germany
4. School of Chemical Engineering, College of EngineeringUniversity of Tehran P.O. Box 11155‐4563 Tehran Iran
5. Department of Polymer EngineeringUniversity Bayreuth, Universitätsstraße 30 Bayreuth 95447 Germany