1. ETH Zürich,
Institute
for Chemical and Bioengineering, 8093 Zürich, Switzerland
2. Empa − Swiss Federal
Laboratories for Materials Science and Technology, Technology and
Society Laboratory, 9014 St. Gallen, Switzerland
3. Empa − Swiss Federal Laboratories
for Materials Science and Technology, Laboratory for Advanced Fibers,
9014 St. Gallen, Switzerland