1. Karlsruhe Institute of Technology (KIT) Institute of Chemical Technology and Polymer Chemistry (ITCP) Engesserstraße 18 Karlsruhe 76131 Germany
2. Pirelli Tyre S. p. A., R&D Viale Piero e Alberto Pirelli 25 Milan 20126 Italy
3. Department of Industrial and Materials Science Division of Engineering Materials Chalmers University of Technology Gothenburg SE‐412 96 Sweden