1. Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, Alessandria Site, Viale Teresa Michel 5, 15121 Alessandria, Italy
2. Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Teknikringen 56-58, 10044 Stockholm, Sweden
3. Institute for Polymers, Composites and Biomaterials, Italian National Research Council, Via Campi Flegrei 34, 80078 Pozzuoli, Naples, Italy