Abstract

Objective: This study aimed to investigate the effectiveness of scouring and bleaching processes using caustic soda and hydrogen peroxide on silver obtained from jute 3rd drawing frame, focusing on the removal of chemical impurities such as hemicellulose, wax, and lignins. Methods: Silver fibers were subjected to scouring and bleaching treatments where parameters such as concentration, liquor ratio (M ratio), and duration were systematically varied. Caustic soda was employed as a scouring agent to remove impurities, followed by hydrogen peroxide as a bleaching agent to purify the fibers further. Results: Prior to treatment, the breaking load of untreated fibers was measured at 85-90 grams per single fiber. Post-treatment, a significant reduction in breaking load was observed, resulting in a strength loss of 15-20 grams per fiber, corresponding to approximately 20% of the original strength. Similarly, a notable reduction in fiber weight was noted after chemical treatment. Conclusion: The substantial loss in fiber strength post-treatment suggests the aggressive action of caustic soda and hydrogen peroxide on the fibers, effectively removing targeted impurities such as hemicellulose, wax, and lignins. Optimization of process parameters such as concentration and duration can potentially mitigate the strength loss while achieving desired levels of fiber purity. These findings underscore the importance of carefully balancing chemical treatments to enhance fiber quality while minimizing detrimental effects on mechanical properties. Future studies could explore alternative treatments or modifications to mitigate strength loss, further optimizing the scouring and bleaching processes for industrial applications.

Keywords: Jute fibers, Scouring, Bleaching, Chemical impurities, Fiber strength.