Effect of Enzymatic Bio-scouring on the Dyeability, Physicochemical, and Mechanical Properties of Jute Fabrics

Abstract

Scouring is necessary for the loom state jute fabrics in order to make them suitable for dyeing and finishing by improving their wettability by removing non-cellulosic matters from the fibre. Scouring is carried out at the boil with a cocktail of caustic soda, detergent, and wetting agent, and the process is energy-intensive. In this work, bio-scouring of jute fabrics was carried out using four kinds of enzymes, Esperase 4.0T (protease), xylanase, and Alcalase 2.5 L (alkaline protease) in a combination with cellulase. The performance of scouring of jute fabrics scoured with various enzymes was evaluated by measuring their whiteness index, hydrophilicity, wettability, and dyeability, and was compared with jute fabrics scoured by the traditional alkali scouring method. The effect of bio-scouring on the weight loss and tensile strength loss was assessed. Of the enzymes investigated, the combined treatment with 50/50 mixture of Alcalase and cellulase provided the best performance in terms of improvement in whiteness index, hydrophilicity, wettability, and dyeability, but also caused the highest loss in

Ultrasound‐assisted enzymatic scouring of jute optimised by response surface methodology and its natural dyeing

“…Tenacity and flexural rigidity decreased as a result of enzyme hydrolysis 24 . The partial surface hydrolysis of the fibres and the elimination of lignin, which binds jute fibre cells and gives them mechanical load‐bearing strength, are the main cause of the enzyme‐treated jute fibres' strength loss 25 . The principal reason for the jute's brittleness is lignin.…”

“…24 The partial surface hydrolysis of the fibres and the elimination of lignin, which binds jute fibre cells and gives them mechanical load-bearing strength, are the main cause of the enzyme-treated jute fibres' strength loss. 25 The principal reason for the jute's brittleness is lignin. The elimination of lignin makes the fibre cells more flexible, smoother and looser, which helps improve the penetration of dyes inside the fibre.…”

Influence of sampling area and extraction method on the thermal, physical and mechanical properties of Cameroonian Ananas comosus leaf fibers

“…Many studies have however shown those plant fibers are generally limited by a wide dispersion of their physical, thermal and especially mechanical properties due to their natural character, experimental analysis conditions ( Dumont et al., 2017 ), plant growth (soil and climate) ( Mediavilla et al., 2001 ), degree of maturity of the plant ( Pickering et al., 2007 ), position of fibers in the plant ( Charlet et al., 2007 ), fiber extraction and processing methods ( Kabir et al., 2012 ; Reddy et al., 2013 ). In addition, defects such as stiffness, yellowing, roughness and hard feeling limit the use of lignocellulosic fibers in the manufacture of value-added textile fabrics or fabrics ( Hassan and Saifullah, 2019 ).…”

Sustainable dyeing and functionalization of jute fabric with a Chinese sumac gall-derived gallotannin using eco-friendly mordanting agents

“…The ATR-FTIR spectrum of control jute shows IR bands at 1029,1248,1424,1595,1733,2900, and 3300 cm -1 . The broad band at 3300 cm -1 could be attributed to the hydroxyl groups of lignin, hemicellulose, and cellulose (Hassan and Saifullah 2019). The IR band at 2900 cm -1 is associated with the -C-H stretching vibrations of cellulose.…”