1. Swedish Centre for Resource Recovery, Faculty of Textiles, Engineering and Business, University of Borås, 501 90 Borås, Sweden
2. MagSol, Tuhkanummenkuja 2, 00970 Helsinki, Finland
3. National Institute of Chemical Physics and Biophysics, 12618 Tallinn, Estonia
4. Department of Polymer, Fibre and Composite, RISE Research Institutes of Sweden, 504 62 Borås, Sweden