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

Abstract

Natural fiber-made apparel dyed with natural dyes is drawing consumer attention because of the possible toxic and health hazards associated with fabric dyed with synthetic dyes. However, many textile products dyed with natural dyes available in the market could pose a health risk because of the use of toxic heavy metals as a dye-complexing agent. In this work, jute fabrics were dyed and multi-functionalized with gallotannin (GT), using ferrous sulfate (FeSO 4 ), calcium chloride (CaCl 2 ), and aluminum chloride (AlCl 3 ) as a non-toxic mordanting agent. The shades produced and other physicochemical properties of the GT-dyed jute fabrics were compared with the jute fabric treated with GT using copper sulfate (CuSO 4 ), a common mordanting agent. It was found that the GT with various mordanting agents produced navy blue and brown shades with tonal changes along with quite good colorfastness to washing. The concentration of GT and mordanting agents, types of mordanting agents, and the treatment pH affected the shade produced and physicochemical properties of the treated fabrics. The surface resistivity was reduced from 235 9 10 10 X/sq for the control to 6.7 9 10 10 X/sq for the AlCl 3 mordanting agent, slightly higher than the surface resistivity exhibited by the CuSO 4 mordant. The fabric treated with GT using FeSO 4 and CaCl 2 mordanting agents showed excellent antioxidant activity, even at the lowest GT dosage applied. Similarly, FeSO 4 and CaCl 2 also showed excellent UV radiation absorption capability. The developed treatment can be used in the textile industry to make cellulosic textiles multifunctional without using any toxic dyes and chemicals.

Eco-friendly bio-dyeing of bio-treated nylon fabric using Esfand (P. harmala) based yellow natural colorant

“…Upon exposure to heat, light, washing, crocking less color is detached and good to excellent rating is found. 30,47,48 Overall bio-mordants have given better effects. Hence microwave treatment has an excellent potential to isolate colorant from Harmal seeds, and tune to the fabric to reduce dyeing variables.…”

Employing Response Surface Methodology in the Production of Elastic Jute Yarn Suitable for Stretch-denim Applications

“…Jute is a lignocellulosic bast ber and the second-largest natural textile ber produced after cotton (Begum et al, 2023). It is lightweight, hygroscopic, biodegradable, sustainable, renewable and more importantly, can be cultivated in a very cheaper way without using chemical pesticides and fertilizers (Hassan & Saifullah, 2021).…”

Phenolic Compounds from By-Products for Functional Textiles

“…Different extraction conditions were used, but almost all studies utilized green, sustainable, and eco-friendly procedures to achieve the whole of the dyeing process. These sustainable approaches included some of the following practices: (i) reducing the use of organic solvents while using water as the main extracting solvent or other green extraction procedures; (ii) minimizing or eliminating the use of toxic metal salt mordants; (iii) using bio-sourced mordants; (iv) directly applying extracts without any type of mordants; (v) applying extracted dyes to fabrics by eco-friendly techniques; (vi) monitoring the biodegradability of the generated wastewaters; and (vii) using life cycle assessments to determine the environmental impacts associated with the dyeing processes [1,4,48,64,72,86,96].…”