1. USTHB, Materials Polymer LaboratoryDepartment of Macromolecular ChemistryFaculty of ChemistryPO BOX 32El Alia, 16111AlgiersAlgeria
2. USTHB, Laboratory of Hydrometallurgy and Inorganic Molecular ChemistryFaculty of ChemistryPO BOX 32El Alia, 16111AlgiersAlgeria