1. Department of Industrial Engineering; University of Salerno, via Giovanni Paolo II, 132; Fisciano (SA) Italy
2. Department of Chemistry and Biology; University of Salerno, via Giovanni Paolo II, 132; Fisciano (SA) Italy
3. Institute for Polymers, Composites and Biomaterials (IPCB-CNR), P. le Enrico Fermi 1; 80055 Portici (NA) Italy