1. Faculty of Science and Technology; Med Bachir El Ibrahimi University; B.B.A 34000 Algeria
2. LMPMP, Department of Process Engineering, Faculty of Engineering; Ferhat Abbas University; Sétif 19000 Algeria
3. Department of Chemistry - Physics, Instituto De Ciencia Y Tecnologia De Polimeros (ICTP-CSIC); Juan De La Cierva 3 Madrid 28006 Spain
4. Department of Macromolecular Physics, Instituto De Estructura De La Materia, IEM-CSIC; Serrano 119 Madrid 28006 Spain