[1] Univ Maribor, Fac Mech Engn, LCPP, Smetanova Ulica 17, SI-2000 Maribor, Slovenia
[2] Papiertech Stiftung, Pirnaer Str 37, D-01809 Heidenau, Germany
[3] Friedrich Schiller Univ Jena, Inst Organ Chem & Macromol Chem, Ctr Excellence Polysaccharide Res, Humboldtstr 10, D-07743 Jena, Germany
[4] ZMF Ctr Med Res, Stiftingtalstr 24, A-8010 Graz, Austria
[5] Natl Inst Chem, Dept Polymer Chem & Technol, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
[6] Graz Univ Technol, Inst Paper Pulp & Fibre Technol IPZ, Inffeldgasse 23, A-8010 Graz, Austria