An innovative, low-cost and environment-friendly approach by using a deep eutectic solvent as the water substitute to minimize waste in the textile industry and for better clothing performance

Abstract

A natural deep eutectic solvent was employed as a green dyeing medium to avoid effluent generation and for a better textile-dyeing effect.

Structure of choline chloride-carboxylic acid deep eutectic solvents by wide-angle X-ray scattering and DFT calculations

“…Deep eutectic solvents (DESs) attract great attention in academic and industry fields for their possible technological applications in green chemistry. [1][2][3] DESs represent an excellent choice of solvent in terms of sustainability, biodegradability, versatility, and capability of stabilizing/suspending solutes, 4 which are considered a new class of ionic liquid (IL) analogs and largely retain their characteristics such as nonflammability, low vapor pressure, and good recyclability. [5][6][7][8] Abbott et al 9 reported the first DES, called reline, based on choline chloride (ChCl, 302 1C m.p.)…”

Green materials with promising applications: cyclodextrin-based deep eutectic supramolecular polymers

“…From a sustainability point of view, DESs offer better prospects for application as a green alternative to traditional organic solvents and ionic liquids (ILs). 11,12 DESs are a class of low melting mixtures (LMMs) linked by hydrogen bond accep-tors (HBAs) and hydrogen bond donors (HBDs) through intermolecular hydrogen bonding interactions and are homogeneous and stable at room temperature. [13][14][15] The most distinctive feature of DESs is "designability", whereby the heating and stirring of specific hydrogen bonding precursors result in a target liquid mixture with negligible vapor pressure.…”

A novel and eco‐friendly approach for dyeing polyester fabrics by liquid disperse dyes treated with deep eutectic solvent

“…Pawar et al proposed the use of choline chloride/urea/glycerol DESs as a dyeing medium for disperse dyes of polyester fibres, which had better sublimation colour fastness without changing the dyeing depth and colour index characteristics compared with the conventional dyeing process using an aqueous medium 11 . Jiang et al reported a water‐free, highly effective and sustainable dyeing process for woollen fabrics using a DES: the dyed woollen fabrics exhibited a higher K/S value and similar colour fastness with lower dye usage compared with those dyed using the conventional aqueous dyeing process 12 . Mehdi et al first reported DES as a novel green dyeing medium for dyeing cellulose nanofibres (CNFs) with anionic reactive dyes (salt‐free), resulting in a higher colour yield than the conventional dyeing medium, and enhanced wettability and colour fastness of CNFs 13 .…”

“…11 Jiang et al reported a water-free, highly effective and sustainable dyeing process for woollen fabrics using a DES: the dyed woollen fabrics exhibited a higher K/S value and similar colour fastness with lower dye usage compared with those dyed using the conventional aqueous dyeing process. 12 Mehdi et al first reported DES as a novel green dyeing medium for dyeing cellulose nanofibres (CNFs) with anionic reactive dyes (salt-free), resulting in a higher colour yield than the conventional dyeing medium, and enhanced wettability and colour fastness of CNFs. 13 Zhang et al modified polyethylene terephthalate (PET) fabrics by choline chloride-oxalic acid DES to convert the surface of PET fabrics from hydrophobic to hydrophilic without changing their crystal structure and mechanical properties.…”