1. Dipartimento di Ingegneria Chimica dei Processi e dei Materiali, Viale delle Scienze, University of Palermo, Palermo, Italy, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands, Dutch Polymer Institute, P. O. Box 902, 5600 AX Eindhoven, The Netherlands, and NT-MDT, 124460 Moscow, Russian Federation