1. POLYMAT, University of the Basque Country UPV/EHU, Joxe Mari Korta Center, Avda. Tolosa 72, 20018 Donostia-San Sebastián, Spain
2. Center of Innovation and Research in Materials and Polymers (CIRMAP), Laboratory of Polymeric and Composite Materials, University of Mons, 23 Place du Parc, Mons B-7000, Belgium
3. Laboratoire de Chimie des Polymères Organiques (LCPO), CNRS, ENSCBP University of Bordeaux, UMR 5629, 16, av. Pey Berland 33607 Cedex, Pessac, France