GREEN CHEMISTRY
·
2022
·Vol. 24
·期 15
·5904-5917
·
IF 11.034
Zhe Jiang,Yifan Cui,Guolin Zheng,Yimin Wei,Qiang Wang,Man Zhou,Ping Wang,Yuanyuan Yu
With the increase in environmental protection awareness, the development of strategies to reduce effluent and lower the cost of the chemical reagents used in the textile wetting process has attracted wide attention. Wool is a representative natural protein fiber with good warmth retention and durability. However, owing to the presence of a dense and chemically inert scale layer on the surface, woolen fabric has poor dye absorption ability, and the wool dyeing process is generally accomplished under the conditions of high dye concentration, salt and an appropriate boiling temperature. Therefore, the development of a novel dyeing approach is important to overcome these limitations to some extent. In this study, a new water-free recyclable dyeing process that uses natural and an acidic deep eutectic solvent as the water-free medium was established for dyeing woolen fabric. The process could be completed by using only the dye and the deep eutectic solvent without other assistant reagents. The wool samples dyed in the acidic deep eutectic solvents had higher color strength (K/S value), similar colorfastness, satisfactory leveling properties, and acceptable mechanical behavior compared with those dyed using the conventional aqueous method. The deep eutectic solvent also could be used as a cleaning solvent to remove the excess dye adhering to the fabric surface after the dyeing process, and the dye-containing solvent could be reused at least 10 times. Thus, the cost, chemical reagent consumption, and waste production of the developed dyeing process were low. Several dyes and acidic hydrogen-bonding ligands of deep eutectic solvents were successfully applied to dyeing wool using this deep eutectic solvent dyeing method. This favorable result indicates that this method has satisfactory universality and the potential for industrial application. Together, the results indicate that this method meets the 3R principles of reducing waste, recycling resources and reusing. This investigation broadens the application field of deep eutectic solvents in the textile industry and can contribute to the further development of green approaches for textile dyeing and finishing.
研究领域:
纺织科学
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环境科学
·
材料化学
✓ 已验证
DOI
高影响因子
COLORATION TECHNOLOGY
·
2016
·Vol. 132
·期 3
·208-216
·
IF 1.127
Luyi Chen,Qian Duan,Jiangang Chen,Yiqi Yang,Bijia Wang
Xanthophylls extracted from corn distillers’ dry grain were successfully applied to dye wool fabrics. As a readily available and cost-effective grain processing byproduct, corn distillers’ dry grain contains appreciable amounts of isolable xanthophyll colourants, which can potentially be used in textile coloration. However, the application of xanthophylls as textile colourants has been limited, possibly owing to their hydrophobic nature and lack of stability at higher temperatures. In the present work, dyeing of wool fabrics with xanthophyll dyes was performed in the presence of a solubilising agent (diglyme) and an antioxidant (butylated hydroxytoluene). Dyeing conditions were modelled and optimised by the one-factor-at-a-time method and response surface methodology. Depth of shade of the wool fabrics dyed with 0.33 g l −1 of xanthophylls could be as high as 10.9 ± 0.5, while the colour fastness to laundering and crocking was better than grade 4. The prominent effect of butylated hydroxytoluene on depth of shade ( K / S ) was further studied using functionally and structurally related model compounds. The K / S -enhancing ability of butylated hydroxytoluene was found to be a synergistic result of its antioxidising and complexing abilities. Lab-extracted xanthophylls of various purities were applied to wool fabrics using the optimised dyeing and aftertreatment conditions. Depth of shade but not colour fastness was significantly affected by the impurities in xanthophylls extracted from corn distillers’ dry grain. The strategy developed by this work not only extends the scope of xanthophyll application into textile coloration but also could be used for other hydrophobic and unstable natural colourants.
研究领域:
纺织科学
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
DYES AND PIGMENTS
·
2024
·
IF 4.1
Xin-Yue Wang,Yue Fan,Jia-Jie Long
Developing new reactive disperse dyes and applying them to dye natural fiber substrates in the supercritical fluid of carbon dioxide (SCF–CO 2 ) is of great importance for ecological protection and the sustainable development of the textile industry. In this work, a reactive disperse dye with an anthraquinonoid chromogen in blue hue and a dichlorotriazine reactive group was successfully designed and synthesized. The precursor of the anthraquinonoid derivative reactive disperse dye was synthesized with a one-pot amination reaction method by employing the reactions between 1, 4-dihydroxyanthraquinone or its cryptochrome 1, 4-diaminoanthraquinone and aniline, ethylenediamine. Then, the precursor was subjected to continuously react with a reactive group of cyanuric chloride to obtain a dichlorotriazine type reactive disperse dye. Moreover, the chemical structures and color characteristics of the final dye, as well as the precursor, were characterized and confirmed by Fourier transform infrared spectroscopy (FT-IR), 1 H nuclear magnetic resonance ( 1 H NMR), and ultraviolet–visible absorption spectroscopy (UV–Vis). Additionally, the anthraquinonoid derivative reactive disperse dye was preliminarily applied to the coloration of cotton and wool substrates in SCF-CO 2 . The coloration results show that the staining fastness and the dry, wet rubbing fastness of the reactive disperse dye on both cotton and wool substrates were satisfactory.
研究领域:
染料化学
·
纺织科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Research and Technology-JMR&T
·
2023
·
IF 6.4
Yingjie Cai,Lexin Xiao,Mohammad Nazmul Ehsan,Tiancheng Jiang,Md Nahid Pervez,Lina Lin,Xiaorong Xiong,Vincenzo Naddeo
This investigation reported a mixture of natural dyes by employing the D5 solvent as a green penetration dyeing system for wool fiber. The ideal dyeing conditions were determined by conducting an in-depth analysis of the following variables: AEO-3 concentration, aqueous pick-up rate, solution pH, dyeing time, temperature, dye mass, and dye fixation percentage. Tensile strength and elongation were measured to learn more about the mechanical characteristics of the wool yarn after it was dyed in D5 solvent and water. The suggested dyeing parameters for wool yarn are 2% of AEO-3, 400% of the wool aqueous pick-up rate at pH 3, 90 °C temperature, and 90-min duration. This was determined by calculating the K/S value and the dye fixing rate. A washfastness of 4–5 on the fading scale and a stainfastness of 5 across the board were acquired. MR and GB dyes obtained a high dye fixation rate within 90–100%; however, GY dye achieved about 50% dye fixation rate. X-ray diffraction (XRD) patterns and thermogravimetric analysis (TGA) verified that the original and dyed wool fiber showed no change in interplanar distance in crystallinity and stable thermal tendency due to the dyeing process. The morphology of the wool's surface was not altered throughout the dyeing process, and the colors were spread uniformly over the fiber in SEM pictures and cross-sections. Finally, natural dyes in a D5 solvent media may be used to produce a ternary color, laying the groundwork for natural dyes to be further industrialized.
研究领域:
纺织科学
·
材料科学
·
染整工程
✓ 已验证
DOI
高影响因子
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