1. Polymer Technology Department of Mechanical Engineering Eindhoven University of Technology P. O. Box 513 Eindhoven 5600 MB The Netherlands
2. Dutch Polymer Institute PO Box 902 Eindhoven 5600 AX The Netherlands
3. School of Chemical Engineering National Technical University of Athens 9 Heroon Polytechniou Street, Zografou Campus Athens GR‐15780 Greece