1. Borealis Polyolefine GmbH, 4025 Linz, Austria
2. Fraunhofer-Institute for Structural Durability and System Reliability (LBF), Darmstadt 64289, Germany
3. Martin Luther University Halle Wittenberg, Chair of Macromolecular Chemistry, von Danckelmannplatz 4, Halle DE 06120, Germany