Effect of Mordant on UV Protection and Antimicrobial Activity of Cotton, Wool, Silk and Nylon Fabrics Dyed with Some Natural Dyes

Abstract

In this study, eco-friendly natural coloring matter such as pomegranate, curcumin, cutch, red onion peel and a mixture of red onion peel/curcumin (40 g/L, 50%) are used. They are extracted in water at 80°C (red onion at boiling). Cotton, wool, silk and nylon fabrics are dyed using conventional method at pH 4 (except cotton at pH 8), liquor ratio 1:40 and 25 g/L dye concentration for a specific time in presence or absence of FeSO4 using simultaneous mordanting method. Colour strength (K/S) and colorimetric data (L*, a* and b*) are measured at specific λ max . Also, fastness properties (light, washing, rubbing) are determined. Also, ultraviolet protection and antibacterial activity of fabrics against micro-organisms strains of Staphylococcus aureus, Klebsiella Pneumoniae and Candida albicans are measured. Results of the dyed fabrics are highly UV protective and have effective antibacterial activity. All the above dyed fabrics are suggested to use in the medical cloths.

Assessment of the Use of Natural Extracted Dyes and Pancreatin Enzyme for Dyeing of Four Natural Textiles: HPLC Analysis of Phytochemicals

“…Catechol and catechin are the chemical compounds of catechu pigment with yellow-brown color that are used for dyeing and tanning of cotton, wool, and silk [66]. Non-mordanted or mordanted dyed woolen fabrics using cutch showed a promising antimicrobial bioactive agent for textile fabrics [67,68].…”

GC–MS, quantum mechanics calculation and the antifungal activity of river red gum essential oil when applied to four natural textiles

“…Nowadays, there is high demand for fabrics with functional or specialized finishes generally, but antimicrobial treatments, in particular, to protect people from microorganisms 21 – 24 . Therefore, to prevent toxic emissions from chemicals and enhance antimicrobial activity, various additives, such as natural pigments as dyes, were utilized in the textile fabrics (cotton, wool, silk, and nylon) for clean and environmentally friendly technologies 25 . Silver nanoparticles (AgNPs)-treated textiles have been found to be an environmentally friendly preservative that boosts product durability and inhibits fungal development 15 .…”

Surface Roughness Analysis of Cotton Fabric by Laser Speckle Technique

“…Natural dyes are biodegradable, eco-friendly and harmless to the environment. Metal mordants are used to enhance the fastness properties of the fabrics which is dyed with natural dyes [1]. The metallic mordants which themselves are pollutant and harmful causing the environmental hazard [2].…”