1. Institute of Polymer Materials, Faculty of Materials Science and Applied ChemistryRiga Technical University, 3 Paula Valdena street LV‐1048 Riga Latvia
2. Institute of Materials ScienceWest Pomeranian University of Technology, 19 Piastów Avenue 70310 Szczecin Poland
3. Department of Polymer Chemistry and TechnologyKaunas University of Technology, 19‐206 Radvilėnų st. Kaunas Lithuania
4. Laboratory of Biomass Eco‐Efficient ConversionLatvian State Institute of Wood Chemistry, 27 Dzerbenes str. Riga LV1006 Latvia
5. Institute of General Chemical Technology, Faculty of Materials Science and Applied ChemistryRiga Technical University, 3 Pulka street LV‐1007 Riga Latvia