1. Department
of Fibre and Polymer Technology, KTH Royal Institute of Technology, 114 28 Stockholm, Sweden
2. Department
of Chemistry and Biology “A. Zambelli”, University of Salerno, via Giovanni Paolo II 132, 84084 Fisciano, Salerno, Italy
3. Department
of Science and Technology, University of Sannio, via dei Mulini
59/A, 82100 Benevento, Italy