1. Department of Fibre and Polymer TechnologyKTH Royal Institute of Technology Teknikringen 58 SE‐100 44 Stockholm Sweden
2. RISE Innventia ABPapermaking and Packaging Box 5604 SE‐114 86 Stockholm Sweden
3. Department of Chemistry and Chemical EngineeringChalmers University of Technology Kemigården 4 SE‐412 69 Gothenburg Sweden