1. Polymer Chemistry laboratory Department of Physical Chemistry, Faculty of Chemistry. University of Sciences and Technology of Oran, M. Boudiaf, B.P 1505 El M'naouar 31000 Oran Algeria
2. Instituto Universitario de Materiales Departamento Química Física, Universidad de Alicante (UA). Apartado 99. E-03080 Alicante Spain
3. Polymer Chemistry Laboratory, Department of Chemistry Faculty of Exact and Applied Sciences, Oran1 University, A. Ben Bella, BP 1524 El M'naouar, 31000 Oran Algeria