Characterization of Surface-Treated Coir Fiber Obtained from Environmental Friendly Bioextraction

This study presents an ecofriendly color improvement method for clean bioextracted coir fiber with biogas recovery. The fiber samples were subjected to treatment with hydrogen peroxide (H2O2)and were optimized at 0.08% with 1:10 fiber to water ratio for 24 h. Combination treatments with (nitric acid) HNO3 and H2O2 were also studied, and matching color of H2O2 treatment at 0.08% was resulted by the treatment of the fiber with 0.016 N HNO3 and 0.03% H2O2, respectively. There was no significant difference in mechanical properties of the samples. The scanning electron microscopic studies of the samples could show significant improvement of surface finish by the treatments.