COLORATION TECHNOLOGY
·
2015
·Vol. 131
·期 6
·439-443
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IF 1.262
Zongqian Wang,Weiguo Chen,Xuewei Zhou,Chaonan Liu,Keith Millington
Bleached silk is rapidly yellowed by exposure to the ultraviolet radiation present in sunlight. The conventional application of a water-soluble hydroxyphenyl benzotriazole ultraviolet absorber (such as UVFast W) to bleached silk reduces its rate of photoyellowing but has a negative impact on the whiteness of the bleached silk, largely cancelling out the improvements in whiteness achieved during bleaching. Therefore, a series of bleaching processes and aftertreatments using UVFast W on silk were investigated, with the measurement of reflection spectrum, whiteness, yellowness, and strength before and after exposure to ultraviolet radiation. The results show that whiteness of silk treated by oxidation–reduction double bleaching can be increased, and the whiteness of double-bleached silk with 4% UVFast W aftertreatment was even slightly higher than that of the hydrogen-peroxide-bleached silk. After ultraviolet irradiation, double-bleached silk samples with 4% UVFast W treatment resulted in both the highest whiteness and optimum photostability by comparison with unbleached standard silk and hydrogen-peroxide-bleached silk samples with and without 4% UVFast W treatment, and its strength difference was superior to the samples, except for standard silk with 4% UVFast W treatment after exposure to UV radiation for 18 h.
研究领域:
材料科学
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纺织工程
·
光化学
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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
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DOI
高影响因子
COLORATION TECHNOLOGY
·
2022
·Vol. 139
·期 1
·57-67
·
IF 2.049
Fuchun Wang,Wei Ma,Bingtao Tang,Shufen Zhang
To obtain a new type of macromolecular reactive dye with high fixation and good light fastness, poly(styrene- co -maleic acid) was synthesised by co-polymerisation of styrene and maleic anhydride, then, through nitration, reduction, diazotisation and coupling reaction, novel macromolecular reactive dyes were prepared with a solubility greater than 60 g/L. The dyes were used to dye cotton fabrics; the results showed their fixation was more than 92%, and both the rub and wash fastness of the dyes were good. The light fastness of the red and blue dyes with the ethoxy group on melamine was grade 4, and for the yellow dye reached grade 5. The poly(styrene- co -maleic acid) macromolecular reactive dyes exhibit very good application prospects in practice.
研究领域:
化学工程
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材料科学
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DOI
高影响因子
COLORATION TECHNOLOGY
·
2022
·Vol. 139
·期 1
·45-56
·
IF 2.049
Na-won Baek,Dan Wang,Xun Zhang,Jie Wang,Xue-rong Fan
Silk fabrics treated with gallic acid/pyrrole (PGA/PPy) complexes polymerised using horseradish peroxidase have higher electrochemical activity than silk fabrics dyed with gallic acid alone. However, the degree of polymerisation decreases. As a result, the ultraviolet (UV) protection and fastness of the silk fabric were lowered. To solve this problem, we studied the degree of polymerisation of the complex and the functionality of dyed silk fabrics by applying a polyethylene glycol (PEG) template to the enzymatic polymerisation of PGA/PPy. The polymerisation mechanism of the complexes was analysed in detail using UV-visible spectroscopy, Fourier-transform infrared (FTIR) spectroscopy, and high-performance liquid chromatography electrospray ionisation mass spectrometry (HPLC-ESI-MS). Consequently, the PGA/PPy/PEG complex has a higher degree of polymerisation than the PGA/PPy prepared without PEG, indicating that the PEG template can promote the polymerisation of PGA and PPy. As a result, we found that the presence of the PEG template improved the thermal stability and UV protection function of the dyed silk fabric, but did not impair the electrochemical activity of silk fabric. As a result of analysing the colour depth, it exhibited a higher K/S value compared to the dyed silk fabric in the absence of PEG. Additionally, its colour fastness was improved.
研究领域:
材料科学
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纺织工程
·
生物化学
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DOI
高影响因子
COLORATION TECHNOLOGY
·
2022
·Vol. 138
·期 5
·565-578
·
IF 2.049
Zhiwei Xu,Qianqian Cheng,Xiangdong Zhou
A novel group of nonionic gemini surfactant (GTPEA) with ethylidene spacer structure was prepared from glucose-lactone, triethylenetetramine, alkyl epoxy polyether and acyl chloride of different alkyl chain lengths. The chemical structure of GTPEA were characterised by Fourier-transform infrared (FTIR) spectroscopy, nuclear magnetic resonance (NMR) and high-resolution mass spectrometry (HRMS). The thermal properties of the three surfactants were characterised by thermogravimetric analysis (TGA). The critical micelle concentrations (cmc values) of GTPEA with different hydrophobic chain lengths were measured using the Wilhelmy plate method (cmc: 1.58 × 10 −5 to 5.01 × 10 −6 mol/L). The solubilisation, emulsification and solubilisation performance tests showed the excellent surface properties of nonionic gemini surfactants. GTPEA-12 with a hydrophobic carbon chain length of 12 carbon atoms was selected to explore the dispersing performance of surfactants on disperse dyes and the levelling performance of polyester fibre disperse dyes. The test results have shown that the dispersion force was 96%, and the particle size of 0.1 g disperse dye was 196 nm in 100 ml of 4 g/L GTPEA-12 solutions. Finally, GTPEA-12 was used as a levelling agent in the dispersion dyeing of polyester fabrics. GTPEA-12 of 0.1 g/L can provide an excellent levelling effect of S ( λ ) = 0.026 for polyester and has little impact on the colour yield ( K / S = 5.0) of polyester fabric.
研究领域:
化学工程
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材料科学
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纺织科学
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DOI
高影响因子
COLORATION TECHNOLOGY
·
2021
·Vol. 138
·期 3
·278-290
·
IF 1.614
Nan Zhang,Zhensheng Tian,Yuanyuan Yu,Ping Wang,Man Zhou,Qiang Wang
Grafting modification is a common method for improving the specific properties of polysaccharides. Herein, we synthesised sodium alginate-g-poly (acrylic acid) (NaAlg-g-PAA) as a novel printing thickener via catalysis of horseradish peroxidase and hydrogen peroxide in the presence of acetylacetone. The synthesised products were characterised by Fourier Transform–infrared spectroscopy and polar nuclear magnetic resonance spectroscopy, which confirmed that the PAA was successfully grafted onto the hydroxyl groups at carbon atoms (C2) of sodium alginate. The optimal grafting percentage and grafting efficiency reached 51% and 96%, respectively. Compared with native sodium alginate, the grafted copolymer NaAlg-g-PAA exhibited better thermal stability, rheological and printing properties. This work provides an efficient and promising approach for modifying polysaccharides like alginates and could be used as an alternative to conventional chemical modification.
研究领域:
生物化学
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材料科学
·
印刷技术
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DOI
高影响因子
COLORATION TECHNOLOGY
·
2023
·
IF 1.8
Zhengyang Gao,Wei Ma,Bingtao Tang,Shufen Zhang
The practical application of a sulphur black dye relies on its ability to dye cotton fibres with pure black colour and maintain the colour with high light fastness. Here, we report a synthesis method to prepare a novel water-soluble reactive sulphur black dye. The approach involves the reduction of CI Sulphur Black 1 to its leuco form and subsequent reaction with a water-soluble intermediate containing reactive groups synthesised from amino acid and cyanuric chloride. The optimal carboxyl and reactive group content of the water-soluble reactive sulphur black dye is 141 mmol/100 g, and the water solubility can reach 92 g/L. The fixation of the reactive sulphur black dye on cotton reaches 89% in a pad dyeing process without using sodium sulphate. The reactive sulphur black dye can achieve a light fastness of grade 6-7, a dry rub fastness of grade 4 and a wet rub fastness of grade 2, comparable or higher than the conventional CI Sulphur Black 1. The dyeing results showed that the novel water-soluble reactive sulphur black dye has excellent performance and good application prospects.
研究领域:
染料化学
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纺织化学
·
应用化学
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DOI
高影响因子
COLORATION TECHNOLOGY
·
2023
·Vol. 140
·期 2
·300-312
·
IF 1.8
Jianing Fan,Shouying Wu,Zixian Wang,Minglong Zheng,Miaomiao Zhang,Linping Zhang,Yi Zhong,Xiaofeng Sui,Hong Xu,Zhiping Mao
The discharge of coloured textile printing and dyeing wastewater causes environmental pollution. Disposing of wastewater efficiently, simply and with low consumption, is a problem that must be addressed. Herein, a catalytic method for rapid decolorisation of organic dyes was devised employing a terpyridine iron complex to activate oxidised permonosulphate. CI Acid Red 1 was used as the simulated pollutant, the influences of operating parameters on the fading effects of wastewater were explored. According to the results, the produced catalytic system exhibits a universal catalytic effect. Even when the dye concentration reaches 76.4 mg/L, the dyeing wastewater may be effectively decolorised. In addition, when anions (HCO 3 − , SO 4 2− , Cl − ) were present in the solution, the degradation effect of CI Acid Red 1 was still effective. Interestingly, active species such as sulphate radicals and singlet oxygen were detected in the catalytic degradation system by radical capture experiments. The removal rate of total organic carbon can achieve a percentage of 26.22% in 2 hours. This research provides a unique, enzyme-like catalytic system for the rapid breakdown of dye contaminants.
研究领域:
环境科学
·
化学工程
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产品关联
DOI
高影响因子
COLORATION TECHNOLOGY
·
2023
·
IF 1.8
Qing Guo,Weiguo Chen,Dongming Qi,Pu Gao,Min Wang,Daquan Zhu,Jie Ling,Zhihua Cui
Mannich-type dyeing of silk fibroin with aromatic primary amine dyes (APADs) is a novel reactive dyeing method that requires mild conditions and exhibits high selectivity and good wet fastness. However, the primary amine group in the APADs significantly decreases the photostability of Mannich-type dyed silk fabrics. To reveal the structure–activity relationship and photofading mechanism of the APADs by Mannich-type dyeing, six pyrazolone-containing APADs with similar structures were designed and synthesised. Variation in amino electron density among the dye analogues was related to differences in colour fixation of the Mannich-dyed fabrics, as determined from the calculated Mulliken charge densities. Using mass spectrometry to monitor the photodecomposition of the dyed silk, it is demonstrated that the Mannich-type dyed silk fabrics undergo photooxidative fading, in contrast to the conventional acidic-type dyed fabrics that undergo photoreductive fading. Furthermore, it is shown that the Mannich-type dyed silk fabric has a higher light fastness than conventional acidic-type dyed fabrics using the same pyrazolone-containing APADs. Evaluation of dye dipole moment and Mannich-type dyeing shows that the APADs with increased dipole moments generally demonstrated increased light fastness.
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DOI
高影响因子
COLORATION TECHNOLOGY
·
2023
·
IF 1.8
Shouying Wu,Linping Zhang,Jianing Fan,Wei Wu,Bolin Ji,Xueling Feng,Bijia Wang,Yimeng Ma,Yi Zhong,Hong Xu,Zhiping Mao
Coordination complexes were widely used in advanced oxidation processes. The ligands with various substituents could lead to differences in the catalytic properties and mechanisms. In this work, the iron(III)–N,N′-dipicolinamide (FeL) complexes (the iron(III) complexes with substituents –CH 3 , –H, –Cl and –NO 2 named as FeL1, FeL2, FeL3 and FeL4, respectively) were used to activate hydrogen peroxide (H 2 O 2 ) for degrading dyes wastewater. Mechanism studies indicated that the FeL4/H 2 O 2 system contains the Fe V =O in addition to the same • OH and O 2 •− as the other systems, which made it exhibit more excellent performance than others. The results of the performance tests showed that the FeL4/H 2 O 2 system could remove 97%, 89%, 100%, 83%, 100%, and 99% of RR195, RY145, RB194, RB19, MB, and RhB, respectively, which proved the good application performance of the FeL4/H 2 O 2 system. In addition, the performance of the FeL4/H 2 O 2 system was not influenced by anions and natural organics. This study verified the feasibility of modulating the catalytic performance of the complexes by changing the substituents and provided an efficient catalytic system for dyeing wastewater treatment.
研究领域:
环境科学
·
化学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）