1. Department of Mechanical Engineering; University of Bath; Bath BA2 7AY UK
2. Department of Chemistry; University of Bath; Bath BA2 7AY UK
3. Department of Chemistry; University of Osijek; Cara Hadrijana 8A HR- 31000 Osijek Croatia
4. Institute of Polymer Science and Technology; ICTP-CSIC; C/Juan de la Cierva, 3 28006 Madrid Spain