1. Department of Civil Engineering and Architecture, University of Catania, Viale Andrea Doria 6, Catania 95125, Italy
2. CNR Institute of Polymers, Composites and Biomaterials, Via Paolo Gaifami 18, Catania 95126, Italy
3. School of Mechanical and Materials Engineering, University College of Dublin, Dublin 4, Ireland
4. INSTM-UDR CT, Viale Andrea Doria 6, Catania 95125, Italy