Introducing Deep Eutectic Solvents as a Water-Free Dyeing Medium for Poly (1,4-cYclohexane Dimethylene Isosorbide Terephthalate) PICT Nanofibers

Abstract

Water, one of the most priceless sources of life, is becoming dangerously threatened and contaminated due to population growth, industrial development, and climatic variations. The drainage of industrial, farming, and municipal sewage into drinking water sources pollutes the water. The textile processing industry is one of the major consumers of water. Herein, the idea of water-free dyeing of electrospun poly (1, 4-cyclohexane dimethylene isosorbide terephthalate) PICT nanofibers is proposed. For this, two different deep eutectic solvents (DE solvents) were introduced as an alternative to water for the dyeing of PICT nanofibers in order to develop a water-free dyeing medium. For this, C.I. disperse red 167 was used as a model dye to improve the aesthetic properties of PICT nanofibers. PICT nanofibers were dyed by conventional batch dyeing and ultrasonic dyeing methods to investigate the effect of the dyeing technique on color buildup characteristics. Dyeing conditions such as dyeing time, temperature and, dye-concentration were optimized. Morphological and chemical characterization observations revealed a smooth morphology of dyed and undyed PICT nanofibers. The ultrasonically dyed nanofibers showed higher color strength and increased tensile strength compared to conventionally dyed nanofibers. Further, the consumption of electrical and thermal energy was also calculated for both processes. The results confirmed that the ultrasonic dyeing method can save 58% on electrical energy and 25% on thermal energy as compared to conventional dyeing.

Salts and water‐free dyeing of cellulose nanofibers using novel green deep eutectic solvents: Isotherm, kinetics, and thermodynamic studies

“…Table 2 demonstrated the entropy change of RR was lower than the RB for both dyeing medium, whereas the entropy change of dyed CNF in DES medium was greater than CNF dyed in CN medium at the same dyeing parameters, the obvious reason for this was the dye molecules in CN medium were less restrained than in DES medium. It means that the dye molecules were embedded less compactly in CN medium 32 . From chemical structure point of view, since the CNF is hydrophilic substance, 33 the interaction between reactive dye and CNF could be a reasonable interoperation.…”

“…It means that the dye molecules were embedded less compactly in CN medium. 32 From chemical structure point of view, since the CNF is hydrophilic substance, 33 the interaction between reactive dye and CNF could be a reasonable interoperation.…”

Plant extracted natural fluorescent protein C-phycocyanin doped in PVA nanofibers for advanced apparel application

“…This was due to lower polymer concentration (8% CP-doped PVA nanofibers) has lower polymer mass and give higher color strength at fixed CP amount in all other polymer concentrations. Similarly, higher polymer concentration (16% CP-doped PVA nanofibers) gives low color strength due to high polymer mass [35]. While the CP-doped PVA nanofibers show blue color due to the presence of natural blue pigment in CP [12].…”

Deep Eutectic Solvent Dyeing of Cellulose Acetate Nanofibers with Disperse Dyes: Kinetics, Isotherm, and Thermodynamic Studies

“…Based on the current rapid growth in research on nano bers for apparel use (Ahmed et al 2017), the researchers focused primarily only on the mechanical and functional properties of the bers and, to the literature relevant, aesthetic properties have not been investigated to date. Disperse dyes are quite well known because they have an a nity for cellulose acetate polymer (Hussain et al 2021). Cellulose acetate nano bers (CANF) have distinct adsorption characteristics and therefore have been considered to be an ideal choice for applications (Cao and Su 2021).…”