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El DISS and El Retma fibers are in abundance in North Africa, collected from Setif, Algeria and have been treated to isolate cellulose fibers with toluene-ethanol and HNO3 to improve their dispersion into EVOH matrix. SEM micrographs and FTIR analyses of the treated fibers confirmed the elimination of non cellulosics materials and thier cristallinity was estimated by DRX. Thermal analyses by TGA indicate a slight improvement compared to the raw fibers. Composites were also prepared by incorporing the cellulosic fibers in EVOH matrix. FTIR results and water absorption behavior indicate a reaction between the treated fiber and EVOH matrix by forming hydrogen bonds. Thermal properties of the composites reported by DSC results decreased compared to neat EVOH. The addition of cellulosic fibers led to an increases in the loss and storage modulus and melt viscosity of the composites.

EXTRUDED POLY(ETHYLENE–CO–VINYL ALCOHOL) COMPOSITE FILMS REINFORCED WITH CELLULOSIC FIBERS ISOLATED FROM TWO LOCAL ABUNDONATES PLANTS