COLORATION TECHNOLOGY
·
2026
·
IF 2.6
Lin Cai,Zhaoyong Gao,Benzhi Ju,Wei Ma,Bingtao Tang,Shufen Zhang
Disperse dyes are virtually insoluble in water, necessitating the addition of substantial quantities of dispersants and extensive grinding to produce commercially viable dyes suitable for polyester fabric dyeing. In this study, a series of 2,4-bis(4-sulfonylanilino)-1,3,5-triazin-6-yl starch ethers (BSATS) with varying molecular weights were prepared through non-directive sulfonation of acid-degraded starch in an aqueous medium for application as disperse dye dispersants. The dispersing performance and underlying mechanisms of these dispersants were analysed. The results showed that the BSATS series of dispersants exhibited superior dispersing ability for disperse dyes. Compared with the commercial dispersant NNO (dye filtration time 68 s after treatment, dispersibility rating C, particle size change 68% after high temperature treatment), the dispersants BSATS 3–7 with molecular weights ranging from 13.2 × 10 4 to 21.0 × 10 4 g-mol −1 showed superior dispersibility (dispersibility rating B) and thermal stability (particle size change only 12% after high temperature treatment). Additionally, the BSATS dispersants were employed to disperse C.I. Disperse Orange 30 primary dyes, yielding uniformly dispersed dye liquors for polyester fabric dyeing. In terms of dyeing performance, the dye suspension containing BSATS dispersant achieved a dye uptake of 90% and colour fastness grades of 4–5. This study presents a methodology for the preparation of starch-based high-performance dye dispersants, thereby expanding the efficient utilisation of biomass starch in the printing and dyeing industry.
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高影响因子
COLORATION TECHNOLOGY
·
2026
·
IF 2.6
Fei Yuan,Jiahui Wang,Shufen Zhang
Azo-pyridone dyes are attractive candidates for high-performance color filters owing to their rigid conjugated frameworks and high thermal stability. However, their practical application is often limited by strong intermolecular interactions that promote aggregation, resulting in broadened absorption profiles and compromised optical quality in thin films. Herein, we demonstrate that introducing N-heterocyclic substituents, morpholine and pyridine, onto the azo-pyridone core effectively disrupts π–π stacking and suppresses aggregation, enabling uniform dye dispersion in poly(methyl methacrylate) (PMMA) matrices. The resulting dye-PMMA composite films exhibit high optical transmittance (>90%), significantly improved yellow color purity and excellent thermal and photostability (Δ E < 3). Combined experimental and density functional theory (DFT) analyses reveal that the heterocyclic substituents modulate the molecular electrostatic potential distribution and reduce intermolecular interaction strength, accounting for the suppressed aggregation behaviour. Both morpholine and pyridine proved effective, confirming the generality of this substitution strategy. This work provides a practical molecular design approach based on N-heterocyclic modification for developing high-performance azo-pyridone dyes for advanced color filter applications.
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高影响因子
COLORATION TECHNOLOGY
·
2026
·
IF 2.6
Xuebin Zhang,Zijuan Yu,Bishen Zhao,Yali Zhang,Minhong Xu,Yongqi Jiang,Yonggui Zha
To enhance the applicability of pigments in high-temperature coating industries, this study employed coating and coupling agent modification. After coating and modification with silane coupling agents (KH560/KH570), pigments exhibited minimal color deviation (Δ E < 3) and elevated thermal decomposition temperatures. After baking at 240°C, the Δ E was about 5. The solar and near-infrared reflectance of pigments after modification with KH560 and KH570 did not change significantly, and the near infrared reflection (NIR) reached about 70%, while the NIR value of pigments after modification with stearic acid, titanate and aluminate coupling agents decreased to 63%. The modified effect of KH570 was best. In the zeta potential test, after coating, the pH value corresponding to the isoelectric point of the pigment decreased from 3.23 to 2.66. The modification of coupling agents slightly increased the isoelectric point of the coated pigment, but it was still lower than that of iron oxide yellow pigment. The greater the difference between the pH of the pigment system and its isoelectric point, the better the stability of the pigment system. By coating and modifying with silane coupling agent KH570, the heat resistance and dispersibility of the pigment have been improved.
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高影响因子
COLORATION TECHNOLOGY
·
2025
·
IF 2.2
Xun Xu,Ren-Cheng Tang
Retarding the uptake rate of dyes and enhancing the migration ability of dyes are two basic measures to be taken to improve the dyeing levelness of polyamide microfibre. In this work, the migration properties of acid dyes during the dyeing of polyamide microfibre were discussed. The effects of the category and molecular mass of dyes, and the conditions of dyeing (pH, temperature, dye concentration, and auxiliaries) on dye migration were evaluated, and the ability of dye migration on polyamide microfibre, wool, and silk was compared. Acid dyes had lower migration ability on polyamide microfibre than on wool and silk. The migration ability of different varieties of dyes displayed great differences, and decreased in the following order: acid levelling dyes > acid half-milling/milling dyes > 1:2 metal complex dyes. The migration percentage of acid dyes increased with increasing pH, temperature and dye concentration. Various types of surfactants displayed different degrees of ability in enhancing the migration of acid half-milling/milling dyes. Fatty amine polyoxyethylene ether (weakly cationic) had the strongest promoting effect on the migration of dyes, followed by sodium alcohol ether sulphate (anionic) and fatty alcohol polyoxyethylene ether (nonionic), while amphoteric surfactants displayed a minor promoting effect. Notably, in the migration test, the migration percentage of dyes was significantly linearly correlated with the extent of dye desorption from fibres.
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高影响因子
COLORATION TECHNOLOGY
·
2023
·Vol. 140
·期 2
·252-261
·
IF 1.8
Dexiang Li,Wei Ma,Bingtao Tang,Shufen Zhang
Ultrafine polyamide/polyurethane synthetic leather (UP/PSL), with a highly natural leather-like appearance and touch, is widely used in many leather commodities. Generally, acid dyes, which are mostly used for dyeing UP/PSL, exhibit poor colour fastness. While, reactive dyes are well-known for their good colour fastness. However, reactive dyes are not used to dye UP/PSL because they are water-soluble and cannot stain the polyurethane (PU) in UP/PSL. In this study, five low water-soluble reactive dyes with good affinity for both polyamide (PA) and PU were synthesised and characterised using ultraviolet-visible and infrared spectroscopy, and mass spectrometry. All low-water-soluble reactive dyes were monoazo dyes with only one sulfonic group and two different functional groups. The reactive dyes were used to dye UP/PSL at 98°C and fixed at 90°C with 7-azatridecane-1,13-diamine as a crosslinking agent. For comparison, Eriofast Red-2B (ER-2B) was used to dye UP/PSL using a special dyeing procedure. ER-2B showed severe issues related to low utilisation and uneven dyeing, whereas the five low water-soluble reactive dyes exhibited better performance than ER-2B. Both the exhaustion and fixation of dyes 1 and 4 exceeded 90.0% when the dosage was less than 3.0% owf (on weight of fabric). In addition, they exhibited good levelling. The washing fastness of the five reactive dyes was excellent and higher than grade 4. The dry rubbing fastness was higher than grade 3-4. Therefore, UP/PSL can be satisfactorily dyed using the reactive dyes with a solubility of less than 1.0 g/L and meet the requirements of daily life applications.
研究领域:
材料科学
·
染料化学
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DOI
高影响因子
COLORATION TECHNOLOGY
·
2024
·
IF 2
Na-won Baek,Shin-hee Lee
Enzymatic dyeing is an environmentally friendly and energy-efficient dyeing method conducted at low temperatures, making it an important option for sustainable dyeing processing technology. This study investigated the enzymatic dyeing of cotton and silk fabrics using six phenolic monomers (catechol, hydroquinone, 2-aminophenol, 4-aminophenol, 1,4-phenylenediamine and 2,5-diaminobenzenesulphonic acid) via oxidative polymerisation catalysed by horseradish peroxidase (HRP). The research explored the colouring mechanism, functional attributes and dyeability of the fabrics. The polymerisation mechanism of the polymer was elucidated through liquid chromatography–tandem mass spectrometry, while the functional and morphological characteristics of the dyed fabric were examined via Fourier transform–infrared spectroscopy, thermogravimetric analysis and scanning electron microscopy imaging. The dyed fabric underwent dyeability assessments, including colour depth analysis and various fastness tests. Under mild reaction conditions, nearly all the phenolic monomers successfully dyed both the silk and cotton fabrics using HRP. The dyed fabrics demonstrated enhanced thermal stability and dyeability. However, the cotton fabrics exhibited worse dyeability and fastness than the silk fabrics, with noticeable stains on their surfaces when dyed with certain phenols. These findings underscore the suitability of enzymatic oxidative dyeing for protein fibres over vegetable fibres, as well as the importance of tailoring enzymatic dyeing processes for vegetable fibres.
研究领域:
纺织科学
·
生物化学
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DOI
高影响因子
COLORATION TECHNOLOGY
·
2017
·Vol. 133
·期 4
·283-292
·
IF 1.107
Yan-Qin Zhang,Li Qi,Jian-Ping Sun,Jia-Jie Long
A new anthraquinonoid disperse reactive dye containing a dichlorotriazine reactive group was successfully synthesised on the basis of the Ullmann reaction in a ligand-free system by employing a copper( i ) iodide as catalyst, in combination with a subsequent condensation reaction. The parameters of the cross-coupling reaction between 1-chloroanthraquinone and 2,5-diaminotoluene sulphate were investigated and optimised, such as the molar ratio of the reactants, the dosage of potassium carbonate and copper( i ) iodide, the reaction temperature, and the reaction time. The results demonstrate that the dosage of potassium carbonate and the reaction time had significant impacts on the yield of the dye precursor, and an optimum synthesis process was also recommended. Moreover, the achieved dye was successfully characterised and confirmed from chemical structure and colour characteristics by employing Fourier transform infrared analysis, nuclear magnetic resonance spectroscopy, UV-vis absorption spectroscopy, elemental analysis, and liquid chromatography–mass spectrometry (LC-MS). Furthermore, a successful application of the obtained dye was achieved, with satisfactory coloration properties on silk and wool.
研究领域:
有机化学
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染料化学
·
材料科学
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DOI
高影响因子
COLORATION TECHNOLOGY
·
2023
·
IF 1.8
Kangwei Si,Zhiwei Xu,Xiangdong Zhou
A series of vegetable oil-based nonionic Gemini surfactant (GPNGS) was prepared using grape seed oil and polyethylene glycol monomethyl ether (350, 550, 750) as the primary raw materials. The chemical structures of different types of GPNGS were characterised by Fourier Transform–infrared spectroscopy, elemental analysis, proton nuclear magnetic resonance and carbon-13 nuclear magnetic resonance. The critical micelle concentration (CMC) of GPNGS with different polyoxyethylene chain lengths was measured using the Wilhelmy ring method (CMC: ca . 1.4 × 10 −4 to 5 × 10 −4 mol/L). The results of wettability testing showed that the contact angle of GPNGS on polyamide film was ca . 46-49°. In addition, the interaction of surfactants with acid dyes was also investigated. The ultraviolet spectrum showed a balance between dyes, surfactants and the dye/surfactant complex. Next, the GPNGS was used as a nylon 66 acid dye levelling agent. After adding 0.2 mmol/L of surfactants, the standard deviations (S(λ)) of nylon 66 dyeing decreased from 0.084 to ca . 0.036-0.044, exhibiting a good levelling effect.
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DOI
高影响因子
COLORATION TECHNOLOGY
·
2021
·Vol. 137
·期 4
·348-360
·
IF 1.614
Chenglong Wang,Kai Yan,Xun Luo,Shulan Jin,Lili Wang,Jun Luo,Jinhuan Zheng
Polyurethane acrylate-based titanium dioxide was used to prepare blue light-curable inks as both a white pigment to replace the original white pigment and as an oligomer. The polyurethane acrylate-based titanium dioxide was fabricated using a two-step method. In the first step, the titanium dioxide was grafted with γ-aminopropyltriethoxy silane, and the grafting process was studied. Second, amino-modified titanium dioxide was used to prepare polyurethane acrylate-based titanium dioxide, which was then used to configure the blue light-curable polyurethane acrylate-based titanium dioxide ink. Fourier Transform–infrared spectroscopy indicated that the amino-modified titanium dioxide and polyurethane acrylate-based titanium dioxide were prepared successfully. The content of the amino groups on the surface of the amino-modified titanium dioxide could be effectively controlled by adjusting the pH value. Moreover, by increasing the content of the amino groups, the viscosity decreased and the photopolymerisation efficiency increased, which was attributed to the formation of branched structures and the promoting effect of the amino groups on the titanium dioxide. The inks with decreased viscosity and branched structures displayed excellent cross-linking properties: viscoelastic transition was achieved within 10 seconds and the final moduli were in the range of 36-55 kPa. The cross-linking degree and rate were more than seven times those of unmodified ink. The ranges of elongation and stress were 95%-165% and 1.9-4.3 MPa, respectively, and the amino group content varied from 0% to 0.101%. In general, polyurethane acrylate-based titanium dioxide was shown to be suitable for blue light-curable ink.
研究领域:
材料科学
·
化学工程
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DOI
高影响因子
COLORATION TECHNOLOGY
·
2016
·Vol. 132
·期 2
·177-185
·
IF 1.127
Jian Liu,Yang Zhou,Feng Zhao,Zhiqin Peng,Shujuan Wang
In the present study, five classes of synthetic dyes – nitrophenol (picric acid), azo (Orange II), diarylmethane (auramine O), triarylmethine (fuchsine, methyl violet, and malachite green), and anthraquinone (alizarin) dyes – were identified in late-nineteenth-century textiles from the China National Silk Museum by high-performance liquid chromatography coupled with diode array detection and mass spectrometry. Data-dependent acquisition of tandem mass spectra provided some information not only on the molecular mass but also on the fragment ions obtained from precursor ions. These fragmentation patterns, obtained in a single experiment, proved to be useful for identification of the synthetic dyes extracted from the textile samples. In addition, it is worth noting that two anthraquinones, which are probably anthrapurpurin and flavopurpurin, and which were detected in printed cotton, can be used as the markers for distinguishing synthetic alizarin from natural alizarin.
研究领域:
文化遗产科学
·
分析化学
·
纺织品保护
·
染料化学
·
质谱分析
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DOI
高影响因子
COLORATION TECHNOLOGY
·
2017
·Vol. 133
·期 5
·391-402
·
IF 1.107
Jingjing Yang,Jian Li,Xiaoxu Teng
A novel polymeric black dye was synthesised by grafting yellow, orange, red, and blue reactive dyes onto polyvinylamine. Such a polymeric black dye takes the onus away from dyers to worry about the compatibility of individual dyes. The polymeric black dye was characterised by Fourier transform infrared, ultraviolet-visible, and nuclear magnetic resonance spectroscopy. The absorption of the polymeric black dye in aqueous solution was nearly constant across the wavelength range 400–700 nm. Compared with a black mixture of reactive dyes with low fixation on cotton, which was prepared by mixing yellow, orange, red, and blue reactive dyes, the polymeric black dye reached 99% fixation on cotton through the use of a crosslinking agent. The colorimetric properties of cotton dyed with the polymeric black dye and with the black mixture of reactive dyes showed that better blackness can be obtained by using the polymeric black dye. Analysis of the thermal stability and penetration ability of the polymeric black dye showed that the polymeric dye has high stability in the application and a uniform distributution in the cotton fabric.
研究领域:
纺织化学
·
高分子科学
·
染料化学
·
材料科学
·
色彩科学
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DOI
高影响因子
COLORATION TECHNOLOGY
·
2020
·Vol. 136
·期 6
·485-491
·
IF 1.5
Huanhuan Li,Gaofeng Feng,Shuaijun Fang,HongFei Qian
A new group of azo disperse dyes prepared by the Ugi four-component reaction were used to dye polyurethane fibres. It was found that all the new dyes showed excellent fastness properties. One of the new dyes was selected to investigate the adsorption properties on polyurethane fibres, including the dyeing rate, adsorption isotherm, surface adsorption state, colour characteristics and colour fastness. The results were compared with those of CI Disperse Orange 3, which has the same parent structure as the new dye. The results indicated that the new dye has a lower dyeing rate and solubility but a higher affinity and adsorption capacity than the conventional dye due to its larger molecular weight and size. In addition, the aggregation of the new dye on the surface of polyurethane fibres occurred at higher concentrations whereas the conventional dyes aggregated at a lower concentration, resulting in lower colour fastness. This demonstrates that these new dyes derived from the Ugi four-component reaction are worth developing further and are of great application value for polyurethane fibres.
研究领域:
染料化学
·
材料科学
·
纺织工程
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DOI
高影响因子
危险品化学品经营许可证（带存储）