1. Laboratoire des Matériaux Organiques, Faculté de TechnologieUniversité Abderrahmane Mira, Route de Targa Ouzemour 06000 Bejaia Algeria
2. Center of Innovation and Research in Materials and Polymers (CIRMAP), Research Institute for Materials Science and EngineeringUniversity of Mons‐ UMONS, Place du Parc 20, B‐7000 Mons Belgium