Effect of Chemical Treatments on Physicochemical Properties of <i>Prosopis juliflora</i> Fibers

Incompatibility between hydrophilic natural fibers and hydrophobic matrix is known to affect the adhesion of the fiber and matrix. Therefore, it becomes necessary to modify the surface of natural fibers for improved adhesion between the fiber and matrix. Prosopis juliflora fibers (PJFs) are known to possess desirable properties for use as reinforcement in polymer matrices. Using chemical analysis, the optimal condition for alkali treatment of the PJFs was found to be 5% (w/v) of NaOH concentration with 60 min soaking time. Chemical modifications favorably changed the physiochemical properties of PJFs and undoubtedly diminished the amorphous and wax contents.