1. ITA Institute for Innovative Technologies, Köthen/Halle, Wiesenring 4, D-06120 Lieskau (Halle/S.), Germany; Leibniz Institute for Polymer Research Dresden, Hohe Strasse 6, D-01069 Dresden, Germany; Institute for Materials Research, Chair of Materials Compounds, Faculty of Engineering, Christian-Albrecht-University of Kiel, D-24118 Kiel, Germany