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