A study on the coloration effectiveness of Chromolaena odorata on the worsted wool fabric

Abstract

Purpose The health and environmental hazards associated with synthetic dyes have led to a revival of natural dyes that are non-toxic, environmentally benign and coupled with various functions. The study aims to investigate and develop the potentiality of a popular herb called Chromolaena odorata (C. odorata) as a sustainable and stable dyestuff in textiles. Design/methodology/approach Natural colorant extracted from C. odorata leaves is used to dye the worsted fabric, which is one of the premier end-use of wool in fashion, via the padding method associated with pre-, simultaneous and post-mordanting with chitosan, tannic acid and copper sulfate pentahydrate. The effects of extraction, dyeing and mordanting processes on fabric’s color strength K/S and color difference ΔECMC are investigated via International Commission on Illumination’s L*a*b* color space, Fourier transform infrared spectroscopy, scanning electron microscope, color fastness to washing, rubbing, perspiration and light. Findings The results obtained indicate extraction with ethanol 90% with a solid/liquid ratio of 1:5 within 1 h, and coloration with a liquor ratio of 1:5 (pH 5) within 2 h under padding pressure of 0.3 MPa are the most effective for coloring worsted fabric. Practical implications The C. odorata’s application as a highly effective dyestuff possessing good colorimetric effectiveness has expanded this herb's economic potential, contributing partly to economic growth and adding value to wool in global supply chain. Originality/value C. odorata dyestuff has prevailed over other natural colorants because of its impressive color fastness against washing, rubbing, perspiration and especially color stability for pH change.

Characterization of self-dyed silk yarn with Rhodamine B dye for fashion applications

“…High color fastness (mostly in the range of 4–5/5) is especially superior of this silk compared to other green dyeing methods with natural dyestuffs (madder, alkanna, safflower, henna, sandalwood, cochineal, Brazilwood, logwood and Chromolaena odorata ) and their association with metallic mordants (Alum, SnCl 2 , K 2 Cr 2 O 7 , CuSO 4 , ZnCl 2 , FeCl 3 and FeSO 4 ) under the effect of washing, rubbing, light and perspiration (Zarkogianni et al. , 2011; Pham et al. , 2022).…”

“…From Table 1, it can be seen that self-dyed silk with RhB gave very high color fastness for almost all color fastness criteria applied in textile materials such as washing, rubbing, light, acidic and alkaline perspiration. High color fastness (mostly in the range of 4-5/5) is especially superior of this silk compared to other green dyeing methods with natural dyestuffs (madder, alkanna, safflower, henna, sandalwood, cochineal, Brazilwood, logwood and Chromolaena odorata) and their association with metallic mordants (Alum, SnCl 2 , K 2 Cr 2 O 7 , CuSO 4 , ZnCl 2 , FeCl 3 and FeSO 4 ) under the effect of washing, rubbing, light and perspiration (Zarkogianni et al, 2011;Pham et al, 2022).…”

Environmentally Friendly Coloration of Polyamide Fabrics with the Use of Natural Dyes: A Study Including Results of Industrial Scale Applications

“…Protein fibers such as wool and silk can be easily dyed using various natural dyes, while metal mordants such as alum, ferrous sulfate, potassium dichromate, copper sulfate etc. are generally used for the improvement of their exhaustion and fixation via simultaneous complex formation with the dye and fiber [4,5].…”