Coloration Technology最新文献

英文中文

Colour gamut analysis of low‐cost dye‐sensitised solar cells using natural dyes 使用天然染料的低成本染料敏化太阳能电池的色域分析

IF 1.8 4区工程技术 Q3 CHEMISTRY, APPLIED

Coloration Technology

Pub Date : 2024-05-08 DOI: 10.1111/cote.12767

Sanaz Shirahmad Haghighi, Razieh Jafari, Mozhgan Hosseinnezhad

Due to the increasing effects of greenhouse gases and environmental pollution, the need for new clean energies like solar energy attracts much attention. Although the characteristics and the efficiency of green photovoltaic devices have been researched, the colour gamut achievable from those devices has not been studied. This study investigates the colour gamut of low‐cost dye‐sensitised solar cells (DSSCs). To do this, 14 natural dye extracts were obtained from herbal resources including dragon fruit, blueberry, mango, radish, yellow rose, red cabbage, sour pomegranate, beetroot, olive, green cabbage pepper, eggplant, parsley, bramble and cherry, and employed as photosensitiser in solar cells. Then, the colorimetric attributes of the photosensitisers were studied in three‐dimensional (3D)‐colour space, that is, CIELab, CIELCH and CIE1931 chromaticity diagram. Additionally, the convex hull method was employed to determine the colour gamut boundary and the corresponding colour gamut volume. Results showed that the majority of samples benefited from approximately 3°–82° of hue angle in a*b* diagram of CIELab colour space and showed the yellowish to reddish tint effects. In CIELCH colour order system, cherry and parsley showed the lowest and highest lightness attributes while the chroma property of samples varied from minimum 1.2 for eggplant to maximum 60.2 for the dragon fruit. Moreover, the results of using the convex hull method showed the volume of 7.73 × 104 that is bounded by the colour gamut of 3D colour points over the CIELab colour space.

由于温室气体和环境污染的影响日益严重，对太阳能等新型清洁能源的需求备受关注。虽然人们已经对绿色光伏设备的特性和效率进行了研究，但对这些设备可实现的色域还没有进行研究。本研究调查了低成本染料敏化太阳能电池（DSSC）的色域。为此，研究人员从火龙果、蓝莓、芒果、萝卜、黄玫瑰、红甘蓝、酸石榴、甜菜根、橄榄、青菜椒、茄子、欧芹、荆芥和樱桃等草本植物中提取了 14 种天然染料提取物，并将其用作太阳能电池的光敏剂。然后，在三维（3D）色彩空间，即 CIELab、CIELCH 和 CIE1931 色度图中研究了光敏剂的色度属性。此外，还采用了凸壳法来确定色域边界和相应的色域体积。结果表明，在 CIELab 色彩空间的 a*b* 图中，大多数样本的色相角约为 3°-82°，并呈现出偏黄至偏红的色调效果。在 CIELCH 色阶系统中，樱桃和欧芹的明度属性最低，而火龙果的色度属性最高，从最低的 1.2（茄子）到最高的 60.2（火龙果）不等。此外，使用凸壳法的结果显示，在 CIELab 色彩空间中，三维色彩点的色域范围为 7.73 × 104。

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引用次数: 0

A comparative research on knitted fabrics washed with eco‐friendly detergent for different washing cycles 不同洗涤周期下使用环保洗涤剂洗涤针织物的比较研究

IF 1.8 4区工程技术 Q3 CHEMISTRY, APPLIED

Coloration Technology

Pub Date : 2024-04-29 DOI: 10.1111/cote.12766

Vildan Sülar, Gülşah Ekin Kartal, Gözde Sezgin Şahin

The laundering process stands as the most commonly employed method for the maintenance of textile products. This investigation focused on boron, a pivotal mineral resource for our nation, and aims to elucidate alterations in fabric properties, specifically about colour changes and pilling, after the utilisation of various washing detergents. Comparative analyses and assessments were conducted across three distinct washing cycles, employing three distinct detergents: a boron‐infused washing detergent, a standard detergent conventionally utilised in textile trials, and a widely adopted commercial detergent. The investigation encompassed three diverse fabric constituents—cotton, polyester, and viscose—subjected to scrutiny in terms of fabric parameters subsequent to 1, 5, and 25 washing cycles. Following the laundering processes conducted at 40°C, evaluations were conducted concerning the pilling degree and colour alteration of the fabrics. Consumer perception regarding colour alterations, and subjective colour assessments was undertaken with a panel of 10 individuals. Furthermore, the research delved into the stain removal efficacy of the boron‐infused washing detergent. To assess stain removal, all fabrics were intentionally stained with six diverse contaminants: ketchup, mayonnaise, coffee, sweetened coffee, tea, and sweetened tea. A post‐washing evaluation of stain conditions was carried out subjectively by an assembled arbitration committee. Over the course of 25 washing cycles, it was observed that the boron‐containing detergent notably diminished colour strength, particularly evident in polyester and cotton fabrics. Pilling outcomes indicated a decrease in pilling as the number of washing cycles increased. Boron‐containing detergent, denoted as detergent B, consistently demonstrated commendable stain removal properties, particularly on cotton fabric.

洗涤过程是纺织品最常用的保养方法。这项调查的重点是硼这种我国重要的矿产资源，目的是阐明使用各种洗涤剂后织物性能的变化，特别是颜色变化和起毛起球。在三个不同的洗涤周期中，使用三种不同的洗涤剂进行了比较分析和评估：一种含硼洗涤剂、一种纺织品试验中常用的标准洗涤剂和一种广泛采用的商业洗涤剂。调查包括三种不同的织物成分--棉、涤纶和粘胶--在 1 次、5 次和 25 次洗涤周期后，对织物参数进行仔细检查。在 40°C 的温度下进行洗涤后，对织物的起球程度和颜色变化进行了评估。由 10 人组成的小组对消费者对颜色变化的看法和主观颜色评估进行了研究。此外，研究还深入探讨了含硼洗涤剂的去污效果。为了评估去污效果，所有织物都被故意染上了六种不同的污染物：番茄酱、蛋黄酱、咖啡、加糖咖啡、茶和加糖茶。洗涤后，由一个仲裁委员会对污渍情况进行主观评估。在 25 次洗涤过程中发现，含硼洗涤剂明显降低了颜色强度，这在涤纶和棉织物上尤为明显。起球结果表明，随着洗涤次数的增加，起球现象有所减少。含硼洗涤剂（称为洗涤剂 B）始终表现出值得称赞的去污性能，尤其是在棉织物上。

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引用次数: 0

Structure and material designs of stretchable electrochromic devices 可拉伸电致变色装置的结构和材料设计

IF 2 4区工程技术 Q3 CHEMISTRY, APPLIED

Coloration Technology

Pub Date : 2024-04-29 DOI: 10.1111/cote.12764

Weigao Wang, Boqing Tian, Majiaqi Wu, Maoliang Jian, Lianqiao Yang

Electrochromic materials are a significant class of optoelectronic functional materials that can change colour by adjusting the voltage periodically. In recent years, there has been rapid development in electrochromic technology. However, current research predominantly focuses on traditional rigid electrochromic devices (ECDs), typically using conductive glass substrates such as indium tin oxide. These rigid colour-changing devices face significant challenges, including large thickness, low mechanical strength, and high cost, which hinder the advancement and commercialisation of electrochromic technology. With the rise of wearable devices and electronic skins, among other future technologies, flexible ECDs have garnered much attention due to their foldability, wearability, and even embeddability. They have emerged as a research hotspot in the field of electrochromism. As a further development direction of flexible ECDs, achieving stretchability poses higher difficulties as it requires maintaining high performance under large strains and even distortions. This article provides an overview of the latest advances in stretchable electrochromic devices (SECDs) from the perspectives of structural and material design. Regarding structural design, the ‘island-bridge’ structure, the ‘longitudinal wave’ structure, and core-shell structures are discussed. In terms of material design, the design schemes of substrate, conductive layer, electrochromic layer and electrolyte layer are mainly introduced, with particular emphasis on the introduction of gel electrolyte. Finally, the challenges and difficulties faced by the development of SECDs are briefly analysed.

电致变色材料是一类重要的光电功能材料，通过周期性地调节电压可以改变颜色。近年来，电致变色技术发展迅速。不过，目前的研究主要集中在传统的刚性电致变色器件（ECD）上，通常使用铟锡氧化物等导电玻璃基板。这些刚性变色器件面临着巨大的挑战，包括厚度大、机械强度低和成本高，阻碍了电致变色技术的发展和商业化。随着可穿戴设备和电子皮肤等未来技术的兴起，柔性 ECD 因其可折叠性、可穿戴性甚至可嵌入性而备受关注。它们已成为电致变色领域的研究热点。作为柔性 ECD 的进一步发展方向，实现可拉伸性具有更高的难度，因为它需要在大应变甚至扭曲的情况下保持高性能。本文从结构和材料设计的角度概述了可拉伸电致变色器件（SECD）的最新进展。在结构设计方面，讨论了 "岛桥 "结构、"纵波 "结构和核壳结构。在材料设计方面，主要介绍了基底层、导电层、电致变色层和电解质层的设计方案，特别强调了凝胶电解质的引入。最后，简要分析了开发 SECD 所面临的挑战和困难。

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引用次数: 0

Optimisation of cationic dye dyeing process of Porel fabrics using response surface methodology 利用响应面方法优化 Porel 织物的阳离子染料染色工艺

IF 1.8 4区工程技术 Q3 CHEMISTRY, APPLIED

Coloration Technology

Pub Date : 2024-04-26 DOI: 10.1111/cote.12765

Yuan Chang, Keru Hou, Yating Ji, Zhongfang Yun, Guolei Cheng, Zaisheng Cai

Polyethylene terephthalate (PET) fibre, widely utilised across diverse industries, suffers from inherent drawbacks such as inadequate moisture absorption, limited hydrophilicity, and susceptibility to static electricity. To address these limitations, Porel fibre has emerged as a novel modified polyester fibre that incorporates flexible aliphatic polyester into its macromolecular chain. This innovative design not only overcomes the deficiencies of PET fibre but also enables it to be dyed using cationic dyes or disperse dyes under atmospheric pressure conditions. However, the investigation of the dyeing process of cationic dyes on Porel textiles remains relatively scarce. In this work, response surface methodology (RSM) was used to optimise the dyeing process of Porel fabrics with C.I. Basic Blue 162. The effects of dyeing temperature, dyeing time, and dye concentration on exhaustion percentage and colour strength (K/S value) were investigated using the Central Composite Design (CCD) method. The optimal dyeing process condition was as follows: a dyeing temperature of 96°C, a dyeing time of 51 min, a dye concentration of 3.6% owf, a dye solution pH value of 4–5, and a liquor ratio of 1:20. Under the optimal dyeing process conditions, the Porel fabrics achieved an exhaustion percentage of 96.2% and a K/S value of 36.0. The aforementioned efforts endow Porel fibre with high‐quality dyeing capabilities and broaden the application prospects of polyester textiles.

聚对苯二甲酸乙二醇酯（PET）纤维广泛应用于各行各业，但其本身存在吸湿性不足、亲水性有限和易受静电影响等缺点。为了解决这些局限性，Porel 纤维作为一种新型改性聚酯纤维应运而生，它在大分子链中加入了柔性脂肪族聚酯。这种创新设计不仅克服了 PET 纤维的缺陷，还使其能够在常压条件下使用阳离子染料或分散染料进行染色。然而，对阳离子染料在 Porel 织物上染色工艺的研究仍然相对较少。在这项工作中，采用响应面方法（RSM）优化了 C.I. 碱性蓝 162 对 Porel 织物的染色工艺。采用中央综合设计法（CCD）研究了染色温度、染色时间和染料浓度对染尽率和色牢度（K/S 值）的影响。最佳染色工艺条件如下：染色温度为 96°C，染色时间为 51 分钟，染料浓度为 3.6%owf，染液 pH 值为 4-5，液比为 1:20。在最佳染色工艺条件下，Porel 织物的耗尽率达到 96.2%，K/S 值达到 36.0。上述努力赋予了 Porel 纤维高质量的染色能力，拓宽了聚酯纺织品的应用前景。

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引用次数: 0

The plasticisation model of dye diffusion: Part 1 introduction 染料扩散的塑化模型：第 1 部分引言

IF 1.8 4区工程技术 Q3 CHEMISTRY, APPLIED

Coloration Technology

Pub Date : 2024-04-17 DOI: 10.1111/cote.12758

Stephen M. Burkinshaw

This paper introduces a novel plasticisation model of dye diffusion which recognises the fundamentally important mechanistic roles that macromolecule glass transition and water‐induced fibre/polymer plasticisation adopt in aqueous immersion dyeing processes. In essence, the model assumes that the temperature dependent diffusivity of all classes/types of dye molecule within the water‐saturated amorphous domains present in all types of common semi‐crystalline textile fibres/polymers, is governed by the thermally regulated relaxation times of the structural rearrangements occurring within the water‐saturated, water‐swollen, water‐plasticised fibre/polymer, as articulated in terms of the constructs of polymer chain segmental mobility and available free volume.

本文介绍了一种新的染料扩散塑化模型，该模型认识到了大分子玻璃化转变和水诱导纤维/聚合物塑化在水浸染色过程中的重要作用。从本质上讲，该模型假定，在所有类型的普通半结晶纺织纤维/聚合物中存在的水饱和无定形域中，所有类别/类型的染料分子随温度变化的扩散性，受水饱和、水膨胀、水塑化纤维/聚合物中发生的结构重排的热调节弛豫时间的支配，这在聚合物链段流动性和可用自由体积的结构方面是明确的。

引用次数: 0

Correction to Investigation into the development of novel lanthanide‐based luminescent colorants for application to textiles and paper materials 更正：关于开发新型镧系发光着色剂以应用于纺织品和纸张材料的调查

IF 1.8 4区工程技术 Q3 CHEMISTRY, APPLIED

Coloration Technology

Pub Date : 2024-04-17 DOI: 10.1111/cote.12763

引用次数: 0

The roles of elevated temperature and carriers in the dyeing of polyester fibres using disperse dyes: Part 4 plasticisation model of dye diffusion 高温和载体在使用分散染料对涤纶纤维染色中的作用：第 4 部分染料扩散的塑化模型

IF 2 4区工程技术 Q3 CHEMISTRY, APPLIED

Coloration Technology

Pub Date : 2024-04-01 DOI: 10.1111/cote.12748

Stephen M. Burkinshaw

This review concerns the application of disperse dyes to poly(ethylene terephthalate) fibres using aqueous immersion dyeing processes and the roles of both elevated dyeing temperatures and carriers in the dyeing system. In this part of the paper, a novel plasticisation model of dye diffusion is proposed which reflects the crucially important mechanistic role that water-induced fibre/polymer plasticisation adopts in the diffusion of disperse dyes within polyester and other types of polymeric material.

本综述涉及使用水性浸染工艺将分散染料应用于聚对苯二甲酸乙二醇酯纤维，以及染色温度升高和染色系统中载体的作用。本文的这一部分提出了一种新的染料扩散塑化模型，该模型反映了水引起的纤维/聚合物塑化在分散染料在聚酯和其他类型聚合物材料中的扩散过程中所起的至关重要的机械作用。

引用次数: 0

Enzymatic coloration of polyamide fabrics and its comparison with conventional dyeing 锦纶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 : 2024-03-27 DOI: 10.1111/cote.12762

Rıza Atav, Ece Karagören, Selma Soysal, İsmail Yakin

Among the textile wet processes, the colouring process is the process step that causes the most environmental pollution. New approaches that support sustainable production instead of environmentally harmful processes are extensively researched in the literature. When considering substitution of chemical processes with environmentally friendly methods, one of the issues that comes to mind is enzymatic processes. It is noteworthy that in recent years, interesting and promising studies on the use of laccase enzymes in textile dyeing have been published in the literature. However, studies on enzymatic colouring are still very limited and sufficient success has not been achieved especially on polyamide. The aim of this study is to develop an environmentally friendly enzymatic dyeing method, which can be an alternative to dyeing polyamide knitted fabrics with 1:2 metal complex dyes according to the exhaustion method. For this purpose, various phenol and amine compounds, and their mixtures were used as precursor, and the colours that can be obtained by enzymatic colouring have been determined. In addition, optimisation of enzymatic colouring conditions (enzyme concentration, temperature and time) was carried out for the precursors that gave the best results in terms of colour and fastness. Furthermore, enzymatic dyeing was compared with conventional 1:2 metal complex dyeing in terms of technical and economic aspects. The reaction pathways in enzymatic coloration with laccase enzyme by using various precursors were also explained by Fourier-transform infrared (FTIR) analysis.

在纺织品湿法工艺中，着色工艺是造成环境污染最严重的工艺步骤。文献中广泛研究了支持可持续生产的新方法，以取代对环境有害的工艺。在考虑用环境友好型方法替代化学工艺时，人们想到的问题之一是酶法工艺。值得注意的是，近年来，文献中发表了关于在纺织品染色中使用漆酶的有趣而有前景的研究。然而，有关酶法染色的研究仍然非常有限，尤其是在聚酰胺方面，尚未取得足够的成功。本研究的目的是开发一种环境友好型酶法染色方法，它可以替代用 1:2 金属络合染料对聚酰胺针织物进行染色的耗尽法。为此，研究人员使用了多种苯酚和胺化合物及其混合物作为前体，并确定了通过酶法染色可获得的颜色。此外，还对酶法染色条件（酶浓度、温度和时间）进行了优化，以确定在颜色和牢度方面效果最佳的前体。此外，还从技术和经济方面对酶法染色与传统的 1:2 金属络合染色进行了比较。还通过傅立叶变换红外（FTIR）分析解释了使用各种前体的漆酶进行酶法染色的反应途径。

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引用次数: 0

Application of three‐way mixed multivariate analysis of variance method to detect changes in chromatic coordinates (L*, a*, b*) in building granites 应用三向混合多元方差分析法检测建筑花岗岩中色度坐标（L*、a*、b*）的变化

IF 1.8 4区工程技术 Q3 CHEMISTRY, APPLIED

Coloration Technology

Pub Date : 2024-03-21 DOI: 10.1111/cote.12761

J. García‐Talegón, A. C. Iñigo, J. Paredes, R. A. Sepúlveda Correa, E. Azofra

In the present work we determined the chromatic coordinates (L*, a*, b*) for three building stones used in the heritage city of Ávila, Spain (World Granite Heritage City, 1988). The stones came from quarries and were subjected to 90 cycles of three types of accelerated ageing processes: (a) freezing/thawing together with cooling/heating (T1); (b) salt crystallisation (T2); and (c) freezing/thawing together with cooling/heating + salt crystallisation (T3). A three‐way mixed MANOVA (multivariate analysis of variance) was applied to the data obtained. Significant variations in the three chromatic coordinates (L*, a*, b*) were observed between the three types of accelerated artificial ageing processes compared to the data obtained from the quarry samples, with a tendency towards darkness (↓L*), redness (↑a*) and much less intensity towards yellowing (↑b*).

在本研究中，我们测定了西班牙阿维拉遗产城（世界花岗岩遗产城，1988 年）使用的三种建筑石材的色度坐标（L*、a*、b*）。这些石材来自采石场，经过了 90 个周期的三种加速老化过程：(a) 冻结/解冻和冷却/加热（T1）；(b) 盐结晶（T2）；(c) 冻结/解冻和冷却/加热 + 盐结晶（T3）。对获得的数据进行了三向混合 MANOVA（多变量方差分析）。与采石场样品的数据相比，在三种加速人工老化过程中观察到三个色度坐标（L*、a*、b*）的显著变化，倾向于暗色（↓L*）和红色（↑a*），而黄化（↑b*）的强度要小得多。

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引用次数: 0

Optimal design of colour formulation prediction for cotton fabrics based on NSGA-II and TOPSIS 基于 NSGA-II 和 TOPSIS 的棉织物色彩配方预测优化设计

IF 1.8 4区工程技术 Q3 CHEMISTRY, APPLIED

Coloration Technology

Pub Date : 2024-03-11 DOI: 10.1111/cote.12749

Zeyan Zhou, Zijian Lin, Yue Ma, JiaRong Niu, Jianyong Liu, Xiaoyin Wang

The prediction of colour formulation is an important step in reproducing the target colour. At present, there are relatively few researches on multi-objective colour formulation problem, and the colour matching accuracy needs to be improved. In this research, a multi-objective evolutionary meta-heuristic method based on the Fast and Elitist Multi-objective Genetic Algorithm (NSGA-II) was proposed to predict the target colour recipes. The method used dye concentration as a variable and included three objective functions: (1) minimising the CMC (Colour Measurement Committee) colour difference between the formulation colour and the target colour, (2) minimising the metamerism index, and (3) minimising the cost of the formulation. The algorithm could obtain the Pareto optimal solution set after iteration. On this basis, the best combination of formulations was selected from the optimal solution set by combining the Expert Scoring Method (ESM), Entropy Weight Method (EWM) and the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS). The prediction effect of the model was evaluated by taking cotton fabrics and reactive dyes actually used in plant as examples. The results showed that 87.5% of the formulations met the CMC colour difference value of no more than 1, the metamerism index of 90.0% of the formulations did not exceed 1, and the cost of 92.5% of the formulations was reduced relative to the maximum extent in the Pareto optimal solution set. Further studies should be focused on removing duplicate individuals to give better diversity in the Pareto optimal solution set.

色彩配方预测是再现目标色彩的重要步骤。目前，针对多目标色彩配制问题的研究相对较少，色彩匹配精度有待提高。本研究提出了一种基于快速精英多目标遗传算法（NSGA-II）的多目标进化元启发式方法来预测目标颜色配方。该方法以染料浓度为变量，包括三个目标函数：(1) 使配方颜色与目标颜色之间的 CMC（颜色测量委员会）色差最小化；(2) 使偏色指数最小化；(3) 使配方成本最小化。该算法经过迭代可以得到帕累托最优解集。在此基础上，结合专家评分法（ESM）、熵权法（EWM）和理想解相似度排序偏好技术（TOPSIS），从最优解集中选出最佳配方组合。以工厂实际使用的棉织物和活性染料为例，对模型的预测效果进行了评估。结果表明，87.5% 的配方符合 CMC 色差值不超过 1 的要求，90.0% 的配方的偏聚指数不超过 1，92.5% 的配方的成本相对于帕累托最优解集中的最大值有所降低。进一步的研究应侧重于去除重复个体，以提高帕累托最优解集中的多样性。

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