DYES AND PIGMENTS
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2024
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IF 4.1
Jingjing Yang,Cheng Wu,Huang Fang,Xin Chen,Jingchun Lv
Herein, four heterobifunctional brilliant yellow dyes containing different numbers of sulfonic groups (MRY-1–MRY-4) were designed to investigate the relationship between the dye structure, dyeing properties, and the eco-friendly dyeing technique. The solubility, stability, substantivity, reactivity, and colorimetric properties of the dyes were studied. The substantivity of the dyes was significantly reduced when the diazo component of the chromophores contained two sulfonic groups. The four dyes were then used to dye cotton fabrics using eco-friendly low liquor ratio dyeing and cold pad-batch dyeing techniques. For low liquor ratio dyeing, when the liquor ratio was 1:6, the fixation rates of MRY-1, MRY-2, and MRY-3 were 84.9 %, 71.1 %, and 75.0 %, respectively. MRY-4 was not suitable for exhaust dyeing but could be used in cold pad-batch dyeing, in which its fixation rate on cotton fabric reached 93.8 %. However, MRY-1 cannot be used to dye cotton by cold pad-batch dyeing due to its low alkali resistance and resulting poor stability. In a similar chromophore structure, increasing the number of sulfonic groups increased the brightness value of the dye but also made the dye greener and bluer. The dry and wet rubbing fastness of cotton dyed with the four reactive dyes was grade 4–5 and 3–4, respectively. The wash fastness to color change and staining reached grades 4 or 4–5, while the light fastness of MRY-1 and MRY-3 was grade 3–4 and that of MRY-2 and MRY-4 was grade 4–5.
研究领域:
纺织科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
FIBERS AND POLYMERS
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2024
·
IF 2.2
Zhang Qi,Yang Ce,Gu Mingqi,Qin Shaoxuan,Yin Jianhua,Wang Xiangrong,Zhang Wei
The integration of natural dyes and biomass-based dyeing auxiliaries holds huge potential to address the environmental sustainability challenges, which the textile industry encounters. This research employed Portulaca oleracea L. extract as a natural dye, utilizing laccase as a catalyst for polymerizing the dye, thereby creating a precursor that enhances its eco-friendly dyeing attributes on cotton fabrics. The initially exhibited suboptimal direct dyeing performance on cotton fabrics, resulting in a faint yellow hue and a K/S value of 0.66. However, following laccase catalysis, the depth of color on the dyed fabric significantly increased, with a K/S value reaching 4.41, and the dye uptake rate increased from 14.54% to 33.69%. The resulting dyed fabric exhibited excellent fastness to soap washing, light, and rubbing, all scoring above levels 4 to 5. Analysis of dyeing kinetics and adsorption models indicated that the dyeing process was consistent with both the pseudo-first-order and pseudo-second-order kinetic models, suggesting physical and chemical bonding between the precursor and the fiber. Further investigations employing ultraviolet spectrum analysis, matrix-assisted laser desorption/ionization time of flight mass spectrometry, and gas chromatography-mass spectrometer revealed the fundamental composition of the natural dye, the molecular weight, and structural characteristics of the precursor, substantiating that the catalytic mechanism involves laccase-catalyzed oxidation. Additionally, the dyed cotton yielded an ultraviolet protection factor value of 230 and a long-lasting herbal fragrance, accurately identified by an electronic nose. These results confirm the viability of intensifying fabric color using the laccase-catalyzed system. This technique significantly expands the environmental applications of its extract.
研究领域:
纺织科学
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环境科学
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生物化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of CO2 Utilization
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2019
·
IF 5.189
Kai Yan,Yan-Qin Zhang,Hong Xiao,Mei-Wu Shi,Jia-Jie Long
Special disperse reactive dyes play an indispensable role in ecological and sustainable dyeing of natural fibers, particularly for silk by employing supercritical carbon dioxide (SCF-CO 2 ) in textile industry. In this work, a special disperse reactive SCFX-AnB3L dye in a red hue involving three moieties of an anthraquinonoid matrix, a bridge group and a dichlorotriazine reactive group was successfully synthesized. The precursor of the target dye was developed by utilizing the intermediates of 1-chloroanthraquinone and N -(2-aminoethyl)-3-methoxybenzenamine, based on a ligand-free Ullmann reaction with metallic copper as a promoter. Then a dichlorotriazine reactive group was grafted onto the dye precursor at a special bridge group via a nucleophilic condensation reaction for achieving the SCFX-AnB3L dye. Moreover, the dye precursor and the final dye were successfully characterized and confirmed by Fourier transform infrared spectroscopy (FTIR), 1 H and 13 C nuclear magnetic resonance spectroscopy ( 1 H and 13 C NMR), ultraviolet-visible absorption spectroscopy (UV–vis), elemental analysis and liquid chromatography-mass spectrometry (LC–MS). Furthermore, the special dye was applied to an ecological dyeing of silk as well as the contrast substrates of cotton and wool in SCF-CO 2 . The coloration results indicate that very good adsorption, uptake and fixation behaviors, and the highest color fastness graded at 4–5 in color fading test and 5 grades for staining and dry or wet rubbing tests were observed for the synthesized special dye on silk substrate in comparison with the contrast ones. Particularly, the highest color intensity on the silk substrate was obtained among the tested substrates under an identical dyeing condition.
研究领域:
纺织化学
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环境科学
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有机合成
✓ 已验证
产品关联
DOI
高影响因子
FIBERS AND POLYMERS
·
2023
·Vol. 24
·期 4
·1367-1377
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IF 2.5
Fang Jin,Meng Chen,Wang Yingfeng,Yang Yi,Han Lun,Wang Shubo,Zhang Guangzhi,Xu Zhenzhen,Min Jie
Recently, the use of natural dyes for simultaneous dyeing and finishing of textiles has become a popular trend with the expanding interest in eco-textiles and environmental-friendly processing techniques. In this study, the natural dye was extracted from biomass lotus seedpod waste, and the effects of temperature, time, and pH as well as a metal mordant on fabric dyeing performance were investigated, and then it was applied to eco-dyeing and functional finishing of cotton fabric together with the bio-mordant chitosan. The dyeing performance and functionality of cotton fabric were characterized through SEM, UV–Vis, Datacolor and indicators such as color strength, color fastness, ultraviolet protection factor, and bacterial inhibition rate. The results showed that the color stability of natural dye was higher under acidic conditions, and the pH had more influence on the dyeing effect of the fabric compared with temperature and time. Though metal mordanting could obtain a higher color strength, it had a certain effect on the color phase of the dyed fabric. SEM showed that cationized chitosan was successfully deposited on the surface of cotton fibers, which improved the dye exhaustion rate of the fabric by reducing the electrostatic repulsion between cotton fibers and dye molecules, thus increasing the color strength ( K/S value of about 4–5 for directly dyed cotton fabric and 7.6446 for chitosan pretreated dyed cotton fabric) and various color fastness (rubbing, washing, saliva, and light fastness were greater than or equal to grade 4). Compared with other fabrics, the chitosan pretreated dyed cotton fabric had a higher ultraviolet protection factor (UPF value = 63.4) and excellent inhibition of E. coli and S. aureus (99.86 and 99.99% initial inhibition, 99.08 and 98.21% after ten cycles of washing). This study provides a new idea for the high-value utilization of biomass waste in textile processing.
研究领域:
纺织科学
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天然染料
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环保加工
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生物质利用
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功能整理
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）