1. Institute of Chemical Engineering and High Temperature Chemical Processes, Foundation of Research and Technology-Hellas (FORTH/ICE-HT), Patras, Greece
2. Interdepartmental Programme in Polymer Science and Technology, University of Patras, Patras, Greece
3. Materials Science Department, University of Patras, Patras, Greece
4. School of Physics and Astronomy, University of Manchester, Manchester, U.K.