Eco-friendly approach towards isolation of colorant from Esfand for bio-mordanted silk dyeing

Abstract

Sustainability in all applied fields particularly in textiles is to protect our globe, environment, and community, where green dyed products are playing their role. For the current study, Esfand (Peganum harmala) has been explored using a green isolation tool, i.e., ultrasonic (U.S.) rays, and applied onto fabric. Different dyeing parameters have been explored statistically through response surface methodology by employing temperature (50-80°C), time (25-65 min), extract volume (15-55 mL), salt (1-5 g/100 mL), and dye bath pH (4-7) through series of experiments. For developing new shades, green mordants such as elaichi, neem, turmeric, and zeera have been utilized. It has been found that exposure of 35 mL extract of 7 pH containing 3 g/100 mL of salt as exhausting agent to U.S. rays for 30 min for the dyeing of silk at 70°C for 45 min has given maximum color strength with reddish-yellow shades. Color characteristics obtained in the CIE Lab system reveal that 5% of turmeric as meta bio-mordant has given good quality reddish-yellow shades. It is found that U.S. rays have not only good potential to isolate colorant followed by dyeing of silk under reduced condition but also the application of bio-mordants have made the process more greener, sustainable, and cleaner.

Ultrasonic-assisted sustainable pollution free advanced method for isolation of colouring material from Amba Haldi (Curcuma aromatica) for wool dyeing

“…Usually, Cu, Cr, Co, Fe, Sn, etc., salts are used, but toxicity is the main issue informing of their effluents after processing. 44 To make the process eco-friendly, in a different study, salt of Al, Fe and TA has been used to develop colourfastness shades of high strength. 45 The data shown in Figure 7(a) and Figure 8(a) revealed that 25 mL of 1 g/100 mL of Al-salt before dyeing and 25 mL of 2 g/100 mL of Al-salt after dyeing has shown maximum yield.…”

Cleaner Production of natural dye from Arjuna terminalia for silk and wool dyeing

“…Optimal temperature is normally required to high tiny color by enhancing the kinetics of the dye bath. Excellent K/S is achieved by avoiding desorption of dye molecules by reducing fabric dye interaction on optimal dyeing time whereas the use of salt is aimed to obtain good color fastness by developing short-range forces between the fabric and dye at given conditions (Adeel et al 2022b). An optimum pH is important to develop an H-bonding between dye and fabric which enhances the shade development and fastness properties (Ranjha et al 2021).…”

Bio-mordants: a review

“…According to reports, different polyphenolic components and antioxidant properties are present in cardamom extract from different spices (Shan et al 2005 ; Naveed et al 2013 ). Adeel et al ( 2022c ) described a sustainable, green dyeing procedure for silk that included neem, elaichi, turmeric, and zeera as bio-mordants and Esfand ( Peganum harmala ) as a natural dye. The color coordinates are said to show that most of the samples have brighter, redder, and yellower hues; however, the best fabric dyed after ultrasound exposure for up to 30 min has produced brighter shades with a yellowish red tone, and similarly, the acidic extract has produced a brighter shade with a redder and more yellowish tone, while the methanolic extract has produced a brighter tint with a reddish-yellow hue.…”