1. Institute of Earth and Environmental Science, Chair of Forest Biomaterials, Faculty of Environment and Natural Resources, University of Freiburg, Freiburg 79085, Germany
2. Freiburg Materials Research Centre (FMF), University of Freiburg, Freiburg 79104, Germany
3. Cellulose and Wood Materials, Empa Material Science and Technology, Dübendorf 8600, Switzerland
4. Institute for Macromolecular Chemistry, University of Freiburg, Freiburg 79104, Germany