Coloration Technology最新文献

英文中文

Sustainable Innovations in the Textile Industry by R. Paul and T. Gries (eds.) (Woodhead Publishing/Elsevier Ltd, 2024) pp. 576 (paperback), £225.00 (ISBN 978-0-323-90392-9)

IF 2 4区工程技术 Q3 CHEMISTRY, APPLIED

Coloration Technology

Pub Date : 2024-11-12 DOI: 10.1111/cote.12799

Andrew Towns

引用次数: 0

Investigation of the application angle and mode parameters on colour fading obtained in laser process 激光加工过程中应用角度和模式参数对褪色影响的研究

IF 1.8 4区工程技术 Q3 CHEMISTRY, APPLIED

Coloration Technology

Pub Date : 2024-09-05 DOI: 10.1111/cote.12785

Rıza Atav, Öner Gündüz, Sercan Yaz, Gizem Çakan

In this study, the effect of four factors affecting colour fading in the laser process (resolution in the X direction, resolution in the Y direction, pixel time and application direction/angle [56°, horizontal, vertical]) were statistically examined. Then, the effect of application direction/angle (56°, horizontal, vertical) and application mode (Normal, HDR Soft, HDR Medium) were investigated in more detail. It is believed that this study will contribute to the literature and is original since there is no study on the effect of application angle and/or mode during laser treatment. It was found that beyond the resolution and pixel time, application direction/angle and mode (HDR Medium > HDR Soft > Normal) are important in terms of colour fading for 11.25 ounce trousers made of 95.3% cotton/3.4% polyester (T400)/1.3% elastane used in this study.

在这项研究中，对影响激光加工过程中褪色的四个因素（X 方向的分辨率、Y 方向的分辨率、像素时间和应用方向/角度 [56°、水平、垂直]）的影响进行了统计分析。然后，更详细地研究了涂抹方向/角度（56°、水平、垂直）和涂抹模式（正常、HDR 柔和、HDR 中等）的影响。由于目前还没有关于激光治疗过程中应用角度和/或模式影响的研究，因此相信这项研究将对文献做出贡献，并且具有原创性。研究发现，对于本研究中使用的由 95.3% 棉/3.4% 聚酯（T400）/1.3% 弹性纤维制成的 11.25 盎司长裤而言，除了分辨率和像素时间外，应用方向/角度和模式（HDR 中等> HDR 柔和> 正常）对褪色也很重要。

引用次数: 0

Effect of chromophore type on efficiency of reactive dye removal using polyamidoamine dendrimer 发色团类型对使用聚酰胺胺树枝状聚合物去除活性染料效率的影响

IF 1.8 4区工程技术 Q3 CHEMISTRY, APPLIED

Coloration Technology

Pub Date : 2024-09-02 DOI: 10.1111/cote.12786

Riza Atav, Eray Akkuş, Deniz İzlen Çifçi, Uğur Ergünay, Yalçın Güneş, Elçin Güneş

In this study, by selecting a sample of dyes from a wide variety of chromophores used in the production of reactive dyes (monoazo, bisazo, metal azo, phthalocyanine, anthraquinone, copper formazan and triphendioxazine), the colour removal performance of polyamidoamine (PAMAM) dendrimer in reactive dyes was statistically evaluated depending on the dye chromophore groups (and accordingly molecular weight and number of sulfo groups of the dye), dendrimer concentration and centrifugation time. When all the results were examined, it was observed that the colour removal efficiency was significantly lower in metalazo and copper formazan‐based reactive dyes, whereas colour removals ranging from 93% to 98% could be obtained in bisazo, triphendioxazine, monoazo, anthraquinone and phthalocyanine dyes. With the use of dendrimer, the best colour removal efficiencies occurred at pH 3. However, it was found that the centrifugation time of 15 min is sufficient for all dyes, and a longer centrifugation does not provide any additional benefit in terms of colour removal.

在这项研究中，我们从用于生产活性染料的各种发色团（单偶氮、双偶氮、金属偶氮、酞菁、蒽醌、铜甲臢和三苯并二噁嗪）中挑选了一些染料样本、根据染料发色团（以及相应的分子量和染料磺基数量）、树枝状聚合物浓度和离心时间，对聚酰胺胺（PAMAM）树枝状聚合物在活性染料中的脱色性能进行了统计评估。对所有结果进行检验后发现，金属偶氮和铜甲臢基活性染料的脱色效率明显较低，而双偶氮、三苯并二噁嗪、单偶氮、蒽醌和酞菁染料的脱色率在 93% 至 98% 之间。使用树枝状聚合物时，pH 值为 3 时的除色效率最高。不过，研究发现 15 分钟的离心时间对所有染料都足够了，离心时间越长，除色效果越好。

引用次数: 0

Preparation and characterisation of pH‐responsive indicator ink for pork freshness monitoring 用于猪肉新鲜度监测的 pH 值响应指示墨水的制备与表征

IF 1.8 4区工程技术 Q3 CHEMISTRY, APPLIED

Coloration Technology

Pub Date : 2024-08-29 DOI: 10.1111/cote.12784

Haichuan Hu, Jianqiang Wang, Haolin Sun, Yuheng Chen, Jinghua Chen

This study developed an intelligent indicator ink based on purple potato anthocyanin to detect the freshness of pork. The ink was composed of waterborne acrylic resin as a binder, with added additives such as dimethyl silicone oil, sodium polyacrylate and ethanol to improve its performance. Testing was conducted on the initial drying, viscosity, fineness, fluidity and stability of the ink, and all performance criteria met the requirements. Gradient solutions with pH 2–12 were dropped onto the ink to test their discoloration ability, which exhibited significant changes in colour with the difference in pH solutions. The indicator ink was applied to monitor the freshness of pork. After 7 days of storage at 4°C, the total volatile basic nitrogen content of the pork was higher than 25 mg/100 g, and the total number of bacteria was >9 log(CFU/g), indicating that the pork had gone rotten. The colour of the indicator ink shifted from purple to purplish blue and ultimately became deep blue. The results showed that the indicator ink provided an effective colour response in the process of pork deterioration, allowing for visual detection of its freshness.

本研究开发了一种基于紫薯花青素的智能指示油墨，用于检测猪肉的新鲜度。该油墨以水性丙烯酸树脂为粘合剂，添加了二甲基硅油、聚丙烯酸钠和乙醇等添加剂以提高其性能。对油墨的初干、粘度、细度、流动性和稳定性进行了测试，所有性能指标均符合要求。将 pH 值为 2-12 的梯度溶液滴在油墨上，测试其变色能力，结果表明，随着 pH 值溶液的不同，油墨的颜色也发生了显著变化。指示剂油墨用于监测猪肉的新鲜度。猪肉在 4°C 下存放 7 天后，总挥发性碱基氮含量高于 25 mg/100 g，细菌总数为 9 log(CFU/g)，表明猪肉已经腐烂。指示剂墨水的颜色由紫色变为紫蓝色，最后变成深蓝色。结果表明，在猪肉变质的过程中，指示剂墨水提供了有效的颜色反应，可以用肉眼检测猪肉的新鲜程度。

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引用次数: 0

The plasticisation model of dye diffusion: Part 2 染料扩散的塑化模型：第二部分

IF 2 4区工程技术 Q3 CHEMISTRY, APPLIED

Coloration Technology

Pub Date : 2024-08-13 DOI: 10.1111/cote.12782

Stephen M. Burkinshaw

Temperature dependent equilibrium dye adsorption data reported for Chlorazol Fast Scarlet 8B, Durazol Red 2B and Chrysophenine G on cotton, CV and CUP fibres and Durazol Grey RG on cotton and CV fibres in the presence of a constant amount of added inorganic electrolyte between 60°C and 90°C, as well as Chrysophenine G on cellophane sheet in the presence of varying amounts of added inorganic electrolyte, between 60°C and 97.5°C, was re-evaluated using the Williams-Landel-Ferry equation. The results obtained suggest that the plasticisation model of dye diffusion appears to offer a reasonable explanation of the temperature dependent equilibrium adsorption of direct dyes on cellulosic fibres/polymers.

利用威廉姆斯-兰德尔-费里方程，重新评估了氯唑快猩红 8B、杜拉唑红 2B 和 Chrysophenine G 在棉花、CV 和 CUP 纤维上，以及 Durazol Grey RG 在棉花和 CV 纤维上的随温度变化的平衡染料吸附数据（60°C 至 90°C），以及 Chrysophenine G 在玻璃纸上的随温度变化的平衡染料吸附数据（60°C 至 97.使用威廉姆斯-兰德尔-费里方程重新评估了在 60°C 至 97.5°C 温度范围内，不同添加量的无机电解质在玻璃纸片上的塑化过程。结果表明，染料扩散的塑化模型似乎可以合理解释纤维素纤维/聚合物上直接染料的温度依赖性平衡吸附。

引用次数: 0

Solvatochromic, computational chemical and E/Z geometrical isomerism studies on some aryl‐hydrazones synthesised by reacting of aryldiazonium chlorides with 6‐butyl‐4‐hydroxyquinolin‐2(1H)‐one 通过芳基偶氮氯化物与 6-丁基-4-羟基喹啉-2(1H)-酮反应合成的一些芳基肼酮的溶色、计算化学和 E/Z 几何异构研究

IF 1.8 4区工程技术 Q3 CHEMISTRY, APPLIED

Coloration Technology

Pub Date : 2024-08-02 DOI: 10.1111/cote.12781

Enayatollah Moradi Rufchahi, Fatemeh Ashuri Mirsadeghi

A series of 3‐(2‐aryl‐hydrazone)‐quinolin‐2,4‐diones were synthesised by the reaction of aryldiazonium chlorides with 6‐butyl‐4‐hydroxyquinolin‐2(1H)‐one dissolved in water containing equimolar amount of sodium hydroxide. All the reactions were carried out at 0–5°C and the corresponding hydrazones were obtained in satisfactory yields and purified easily by recrystallisation from hot dimethylformamide. According to proton nuclear magnetic resonance (1H NMR) and ultraviolet‐visible (UV‐visible) results, there are two kinds of intramolecular hydrogen bonds in these synthesised aryl‐hydrazones which enables the compounds to be rotated about the hydrazone C=N bond and through that leads to a reversible isomerisation between their E and Z configurations. The isomers populations and the rotation phenomenon can be controlled by changing the polarity of the solvents. The E/Z ratio of each synthesised compound was studied in deuterated dimethyl sulfoxide (DMSO‐d6) and, if soluble in deuterated chloroform (CDCl3) and compared. The results reveal that a decrease in solvent polarity (upon changing the solvent from DMSO‐d6 to CDCl3) shifts the isomeric balance to Z‐geometrical form and substantially increase the E/Z ratio. A density functional theory (DFT) analysis regarding highest occupied molecular orbital (HOMO), HOMO −1, lowest unoccupied molecular orbital (LUMO), and LUMO +1 has been conducted and discussed. The results obtained from DFT calculations at B3LYP/6‐31G(d) level of theory, demonstrated that the hydrazone tautomeric forms are more stable with the lowest total energy and showed a good agreement with the experimental findings in both gas and solution states. As it is expectable, DFT calculation in CDCl3 and DMSO‐d6 indicate that the dipole moments of the Z configurations are significantly higher than those of the E structures.

通过芳基偶氮氯化物与溶于含等摩尔量氢氧化钠水中的 6-丁基-4-羟基喹啉-2(1H)-酮的反应，合成了一系列 3-(2-芳基-腙)-喹啉-2,4-二酮。所有反应均在 0-5°C 温度下进行，并以令人满意的产率获得了相应的肼酮，而且很容易从热二甲基甲酰胺中重结晶提纯。根据质子核磁共振（1H NMR）和紫外可见光（UV-visible）结果，在这些合成的芳基肼中存在两种分子内氢键，这使得化合物能够围绕腙的 C=N 键旋转，并通过旋转导致其 E 和 Z 构型之间的可逆异构化。可以通过改变溶剂的极性来控制异构体的数量和旋转现象。我们在氚代二甲基亚砜（DMSO-d6）中研究了每种合成化合物的 E/Z 比值，并对其在氚代氯仿（CDCl3）中的溶解性进行了比较。研究结果表明，溶剂极性的降低（当溶剂从 DMSO-d6 变为 CDCl3 时）会使异构体平衡转向 Z-几何形式，并大幅提高 E/Z 比值。对最高占有分子轨道（HOMO）、HOMO-1、最低未占有分子轨道（LUMO）和 LUMO +1 进行了密度泛函理论（DFT）分析和讨论。在 B3LYP/6-31G(d) 理论水平上进行的 DFT 计算得出的结果表明，腙的同分异构形式更加稳定，总能量最低，并且与气态和溶液态的实验结果显示出良好的一致性。在 CDCl3 和 DMSO-d6 中进行的 DFT 计算表明，Z 构型的偶极矩明显高于 E 结构。

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引用次数: 0

Enzymatic coloration of wool fabrics and its comparison with conventional dyeing 羊毛织物的酶法染色及其与传统染色的比较

IF 1.8 4区工程技术 Q3 CHEMISTRY, APPLIED

Coloration Technology

Pub Date : 2024-08-01 DOI: 10.1111/cote.12783

Rıza Atav, Gökmen Karagöz, Uğur Ergünay

The search for a more ecological alternative to dyeing processes, which is the most polluting textile process, has become one of the most studied topics today. In this respect, enzymatic colouring with the use of laccases offer important opportunities, but studies on enzymatic colouring are still very limited. However, in order for enzymatic dyeing to find industrial‐scale use, the colour variety must be wide. Within the scope of this study, it is an important output that this study has brought to the literature, that the variety of colours that have been obtained in the literature in enzymatic dyeing has been increased so far by working with a wide variety of precursors and their mixtures, including those that have not been tested on wool before. At the same time, the reaction mechanism of the enzymatic dye synthesis and the chemical structures of the dyes were elucidated by Fourier‐transform infrared spectroscopy. Beyond that, as it is known, when a new dyeing process is developed, its technical, economic and ecological advantages and disadvantages compared to the currently accepted conventional dyeing should be revealed. In this study, the colours obtained by enzymatic dyeing were matched with 1:2 metal complex dyes and then two fabrics dyed with the same colour, one enzymatic and the other with conventional method, were compared in terms of technical (colour, fastness), economic (water, energy and chemical consumption) and ecological (biological oxygen demand of wastewater, chemical oxygen demand, etc.) aspects.

染色工艺是污染最严重的纺织工艺，寻找一种更生态的染色工艺替代品已成为当今最热门的研究课题之一。在这方面，使用漆酶的酶法染色提供了重要的机会，但有关酶法染色的研究仍然非常有限。然而，要使酶法染色在工业上得到大规模应用，颜色种类必须丰富。在本研究范围内，本研究为文献带来了一项重要成果，即通过使用多种前体及其混合物，包括以前未在羊毛上测试过的前体，迄今为止，文献中的酶法染色所获得的颜色种类有所增加。同时，还通过傅立叶变换红外光谱法阐明了酶法染料合成的反应机理和染料的化学结构。除此以外，众所周知，当一种新的染色工艺被开发出来时，它在技术、经济和生态方面与目前公认的传统染色工艺相比的优缺点也应被揭示出来。本研究将酶法染色得到的颜色与 1:2 金属络合染料进行配比，然后从技术（颜色、牢度）、经济（水、能源和化学品消耗）和生态（废水的生物需氧量、化学需氧量等）方面对酶法和传统方法染成相同颜色的两种织物进行比较。

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引用次数: 0

Colour difference detection algorithm for warp‐knitted fabric based on image colour appearance model 基于图像色彩外观模型的经编织物色差检测算法

IF 1.8 4区工程技术 Q3 CHEMISTRY, APPLIED

Coloration Technology

Pub Date : 2024-07-10 DOI: 10.1111/cote.12779

Guosheng Xie, Yang Xu, Xiaowei Sheng, Yike Jin, Yize Sun

Detecting colour differences in warp‐knitting fabric is essential to ensure its quality. Machine vision algorithms are commonly used for automatic colour difference detection. However, the current algorithm directly extracts RGB (red, green, blue) colour stimulus values from the image without considering the image's colour attributes, leading to a significant error in colour difference detection. To solve this issue, a colour appearance model is introduced into the field of colour difference detection for warp‐knitted fabric. Initially, a colour appearance model based on CAM16 is established, and the critical parameters are calculated to obtain the colour appearance attribute of the fabric. The colour difference calculation formula is then constructed in the uniform colour space of CAM16‐UCS. A template selection algorithm based on principal component analysis was designed to select warp‐knitted cloth images with standard colours. Subsequently, a cloth colour difference detection algorithm was developed using the cloth colour profile model. The performance of the colour difference formula based on the colour profile model was evaluated using the PF/3 method. To compare the CIELab, CMC(2:1), and CIEDE2000 colour difference formulas, standardised residual sum of squares was used. The results indicated that the colour difference formula based on the colour‐appearance model is about 5.32% different from the visual colour difference perceived by the human eye. However, it can perform as well as the CMC(2:1) colour difference formula, which is widely used in the textile industry.

检测经编织物的色差对确保其质量至关重要。机器视觉算法通常用于自动色差检测。然而，目前的算法直接从图像中提取 RGB（红、绿、蓝）色彩刺激值，而不考虑图像的色彩属性，导致色差检测存在很大误差。为解决这一问题，经编面料色差检测领域引入了色彩外观模型。首先，建立基于 CAM16 的色彩外观模型，并计算关键参数以获得织物的色彩外观属性。然后在 CAM16-UCS 统一色彩空间中构建色差计算公式。设计了一种基于主成分分析的模板选择算法，用于选择具有标准色彩的经编布图像。随后，利用布匹色彩轮廓模型开发了布匹色差检测算法。使用 PF/3 方法评估了基于色彩轮廓模型的色差公式的性能。为了比较 CIELab、CMC(2:1) 和 CIEDE2000 色差公式，使用了标准化残差平方和。结果表明，基于色彩外观模型的色差公式与人眼感知的视觉色差相差约 5.32%。不过，它的性能不亚于在纺织行业广泛使用的 CMC（2:1）色差公式。

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引用次数: 0

Towards structurally new cyanine dyes—investigating the photophysical and potential antifungal properties of linear substituted heptamethine dyes 开发结构新颖的氰基染料--研究线性取代庚胺染料的光物理特性和潜在的抗真菌特性

IF 2 4区工程技术 Q3 CHEMISTRY, APPLIED

Coloration Technology

Pub Date : 2024-07-04 DOI: 10.1111/cote.12780

Okoh Adeyi Okoh, Clare L. Lawrence, Roger H. Bisby, Sarah L. Brennan, Robert B. Smith

The synthesis of a range of new linear substituted heptamethine dyes has been designed and described. The photophysical properties of all the dyes were investigated, with many exhibiting improved fluorescent quantum yields when compared with indocyanine green. Finally, growth inhibition studies were performed in the fission yeast Saccharomyces pombe, which suggests potential antifungals activity in the μM range.

我们设计并描述了一系列新的线性取代庚胺染料的合成。对所有染料的光物理特性进行了研究，与吲哚菁绿相比，许多染料的荧光量子产率都有所提高。最后，还在裂殖酵母中进行了生长抑制研究，结果表明这些染料在 μM 范围内具有潜在的抗真菌活性。

引用次数: 0

FP-Flow: Feature pyramid flow model for fabric defect detection FP-Flow：用于织物疵点检测的特征金字塔流模型

IF 2 4区工程技术 Q3 CHEMISTRY, APPLIED

Coloration Technology

Pub Date : 2024-07-01 DOI: 10.1111/cote.12768

Yuanfei Wang, Yang Xu, Zhiqi Yu, Xiaowei Sheng

Fabric defect detection is a crucial aspect of fabric production. At present, deep learning detection methods mostly rely on supervised learning. To tackle this issue, this study proposes an unsupervised fabric defect detection approach based-on normalising flow. The method only needs to train the mapping of the feature probability distribution of defect-free samples to a Gaussian distribution. In the inference process, the location of defects can be determined by testing the distance between the probability distribution of image features and the estimated distribution. To adapt to the complex background and various minor defects of the fabric, a feature pyramid structure is adopted. Moreover, considering the gradient vanishing and network degradation caused by deep layers during training, a residual structure is incorporated into the model. Experimental results demonstrate that the feature pyramid flow model outperforms other methods in defect detection across multiple datasets, with an average score rate of 98.7% and 100% for pixel-level area under the curve (AUC) receiver operating characteristic and image-level AUC, respectively, compared to an average score rate of 91.1% and 85.4% for other methods.

织物疵点检测是织物生产的一个关键环节。目前，深度学习检测方法大多依赖于监督学习。针对这一问题，本研究提出了一种基于归一化流量的无监督织物疵点检测方法。该方法只需训练无缺陷样本的特征概率分布与高斯分布的映射。在推理过程中，可通过测试图像特征概率分布与估计分布之间的距离来确定疵点位置。为了适应复杂的背景和织物的各种微小疵点，采用了特征金字塔结构。此外，考虑到训练过程中深层造成的梯度消失和网络退化，在模型中加入了残差结构。实验结果表明，在多个数据集上，特征金字塔流模型在疵点检测方面优于其他方法，在像素级曲线下面积（AUC）接收操作特征和图像级AUC方面的平均得分率分别为98.7%和100%，而其他方法的平均得分率分别为91.1%和85.4%。

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