Biologically Degummed and Chemically Treated Okra Bast Fibers-Reinforced Poly(Vinyl Alcohol) Composites

This paper focuses on preparation of poly(vinyl alcohol) (PVA)-based composites reinforced with okra bast fibers at different percentages 5, 10, 20% via solution casting method. Fibers obtained from sections plants were biologically degummed and scoured Na2CO3. Selected bleached, treated maleic anhydride or grafted vinyl acetate. Mechanical, physical biodegradational properties the investigated. The tensile strength produced ranges between 33.8 55.1 MPa, elasticity modulus 1.8 to 2.6 GPa, elongation rate break varies in 2.8-10%. Chemical treatments led improved mechanical performance whereas increased fiber content reduces strength, stiffness elongation, as well water absorption. Fiber addition significantly affected biodegradation a complicated way: by decelerating mass loss but accelerating deterioration properties.