Coloration Technology最新文献_第2页

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 2 4区工程技术

Coloration Technology Pub Date : 2024-07-31 DOI: 10.1111/cote.12783

Rıza Atav, Gökmen Karagöz, Uğur Ergünay

{"title":"Enzymatic coloration of wool fabrics and its comparison with conventional dyeing","authors":"Rıza Atav, Gökmen Karagöz, Uğur Ergünay","doi":"10.1111/cote.12783","DOIUrl":"10.1111/cote.12783","url":null,"abstract":"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.","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":"141 3","pages":"305-324"},"PeriodicalIF":2.0,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141882377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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 2 4区工程技术

Coloration Technology Pub Date : 2024-07-09 DOI: 10.1111/cote.12779

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

{"title":"Colour difference detection algorithm for warp-knitted fabric based on image colour appearance model","authors":"Guosheng Xie, Yang Xu, Xiaowei Sheng, Yike Jin, Yize Sun","doi":"10.1111/cote.12779","DOIUrl":"10.1111/cote.12779","url":null,"abstract":"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.","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":"141 3","pages":"291-304"},"PeriodicalIF":2.0,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141587382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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

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

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

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

Yuanfei Wang, Yang Xu, Zhiqi Yu, Xiaowei Sheng

{"title":"FP-Flow: Feature pyramid flow model for fabric defect detection","authors":"Yuanfei Wang, Yang Xu, Zhiqi Yu, Xiaowei Sheng","doi":"10.1111/cote.12768","DOIUrl":"10.1111/cote.12768","url":null,"abstract":"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.","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":"141 2","pages":"249-259"},"PeriodicalIF":2.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141524449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The mathematical model for colour preference in Chinese painting within museum lighting environments 博物馆照明环境下中国画色彩偏好的数学模型

IF 2 4区工程技术

Coloration Technology Pub Date : 2024-06-15 DOI: 10.1111/cote.12778

Rui Dang, Shuning Wang, Xingcan Sun, Ming Tang, Di Yang

{"title":"The mathematical model for colour preference in Chinese painting within museum lighting environments","authors":"Rui Dang, Shuning Wang, Xingcan Sun, Ming Tang, Di Yang","doi":"10.1111/cote.12778","DOIUrl":"10.1111/cote.12778","url":null,"abstract":"Colour in a Chinese painting not only conveys cultural, historical, and philosophical concepts but also carries specific symbolic meanings and emotions, possessing a high level of artistic value. However, the sensitivity of Chinese paintings to light results in exhibition environments being characterised by low illuminance and low colour temperature. Therefore, accurately assessing colour preferences in Chinese paintings under such conditions is an issue that needs to be addressed. This study conducted simulated experiments in real museum exhibition halls, with 36 participants providing subjective evaluations of Chinese paintings, to explore the effects of various lighting parameters on colour preferences. Through statistical analysis and multiple linear regression, the relationship between lighting parameters and colour preferences in a Chinese painting was determined, and an evaluation model was established. This research outcome provides important mathematical tools for selecting appropriate lighting and developing dedicated lighting for Chinese paintings, ensuring the artistic inheritance of Chinese painting colours.","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":"141 2","pages":"238-248"},"PeriodicalIF":2.0,"publicationDate":"2024-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141336479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fast prediction of optimal reaction conditions and dyeing effects of natural dyes on silk fabrics by lightweight integrated learning (XGBoost) models 利用轻量级集成学习（XGBoost）模型快速预测丝织物上天然染料的最佳反应条件和染色效果

IF 2 4区工程技术

Coloration Technology Pub Date : 2024-06-10 DOI: 10.1111/cote.12777

Jie Chen, Yuyang Lin, Ying Liu

{"title":"Fast prediction of optimal reaction conditions and dyeing effects of natural dyes on silk fabrics by lightweight integrated learning (XGBoost) models","authors":"Jie Chen, Yuyang Lin, Ying Liu","doi":"10.1111/cote.12777","DOIUrl":"10.1111/cote.12777","url":null,"abstract":"There is a lot of repetitive work involved in exploring the dyeing performance of natural dyes. To improve the experimental efficiency, save material, reduce time costs and shorten the research cycle, this study collects and analyses the literature data of 350 natural dye experiments to construct the Natural Dyes Dataset, and achieves rapid prediction of the optimal reaction conditions and dyeing effects of natural dyes using a lightweight integrated learning model. The size of the trained XGBoost model is only 562 KB; only the name of the dye and its approximate chemical composition need to be input to predict the results of the reaction environment pH, colour fastness to washing (CFW) and colour fastness to rubbing (CFR) of the natural dye on silk fabrics with the highest K/S in a very short time of 52 ms. The prediction accuracies for pH, CFW and CFR in the validation set are as high as 94.12%, 93.75% and 100%, respectively, and 77.78%, 91.67% and 83.33% for the real test set, with both validity and transferability. The integrated learning approach provides valuable guidance for exploring the dyeing performance of natural dyes with very small deployment costs and a very short inference time, expanding the possibilities of cross-application of the disciplines of machine learning and textile dyeing.","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":"141 2","pages":"223-237"},"PeriodicalIF":2.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141364489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sustainable scouring of cotton using extracts from wood ash and soapnut and its optimisation by response surface methodology 使用木灰和皂角提取物对棉花进行可持续冲洗，并通过响应面方法对其进行优化

IF 2 4区工程技术

Coloration Technology Pub Date : 2024-06-09 DOI: 10.1111/cote.12776

Harshal Patil, Ashok Athalye

{"title":"Sustainable scouring of cotton using extracts from wood ash and soapnut and its optimisation by response surface methodology","authors":"Harshal Patil, Ashok Athalye","doi":"10.1111/cote.12776","DOIUrl":"10.1111/cote.12776","url":null,"abstract":"The non-cellulosic impurities like oil, wax, and pectins present in the cotton fibre adversely impact wetting. Consequently, these impurities must be removed during the pretreatment process to prevent unevenness of subsequent coloration. Generally, an alkaline treatment with petroleum-based synthetic surfactants is done, which is called scouring. This study attempts to develop an environmentally safe alternative using alkali from wood ash extract (WAE) and surfactant from soapnut extract (SE). The factors of WAE (10%–30%), SE (5–15 g/L), temperature (75–95°C), and time (20–60 min) were optimised using response surface methodology. A concentration of 20% WAE and 10 g/L SE at 90°C for 30 min was found to be adequate to remove impurities. The statistically optimised method showed good hydrophilicity, indicated by an average wetting time of 15 s, and 2.7% weight loss. The scoured fabric was subsequently dyed with natural dye extracted from marigold flowers and reactive dye. The scoured cotton was evaluated by weight loss, wettability, tensile strength, whiteness index, and colour value (K/S) and showed comparable results to conventional scouring.","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":"141 2","pages":"209-222"},"PeriodicalIF":2.0,"publicationDate":"2024-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141367100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Post-modification of azo dyes using an α-phenyl diazo ester for improving the colour fixation properties of polyurethane fibre 使用α-苯基重氮酯对偶氮染料进行后改性，以改善聚氨酯纤维的固色性能

IF 2 4区工程技术

Coloration Technology Pub Date : 2024-06-04 DOI: 10.1111/cote.12769

Hua Jiang, Lulu Shi, Xiaokang Xie, Ye Wang

引用次数: 0

Redox kinetics of methylene green: Titanium trichloride as a novel photo redox agent 亚甲基绿的氧化还原动力学：作为新型光氧化还原剂的三氯化钛

IF 2 4区工程技术

Coloration Technology Pub Date : 2024-05-30 DOI: 10.1111/cote.12753

Syed Muhammad Saqib Nadeem, Rehana Saeed

{"title":"Redox kinetics of methylene green: Titanium trichloride as a novel photo redox agent","authors":"Syed Muhammad Saqib Nadeem, Rehana Saeed","doi":"10.1111/cote.12753","DOIUrl":"10.1111/cote.12753","url":null,"abstract":"The kinetics of the redox reaction of methylene green (MG) and the novel photo-redox agent titanium trichloride (TiCl3) in water were investigated by real-time spectrophotometric analysis of the change in absorbance of the reaction mixture at 655 nm. The novelty of this redox reaction is that the TiCl3 is an inorganic compound in contrast to the previously studied organic redox couples. The redox reaction was analysed in depth and the effects of the concentration of the TiCl3, MG, pH, dielectric constant, ionic strength, metal ions, and temperature on the reaction kinetics were observed. The rate of reaction had a direct relationship with the pH, dielectric constant, and ionic strength of the reaction medium, while an increase in temperature decreased the rate of reaction. The activation energy (Ea) was calculated by the Arrhenius relation, and the other thermodynamic parameters, such as enthalpy change of activation (∆H*), free energy change of activation (∆G*), and entropy change of activation (∆S*) were also evaluated to support the findings of the kinetic measurements. The presence of any reaction intermediate other than the species in the reaction mechanism was ruled out by the spectroscopic analysis of the reaction mixture and Michaelis–Menten plot while the absence of any free radicals was confirmed by the negative polyacrylamide test. A reaction mechanism for the redox reaction of MG+ and TiCl3 was proposed based on the different excited states of the MG+ involved in the reaction and the results of the product analysis. The decolourisation of MG by the TiCl3 is overall a second-order reaction and is significantly affected by the pH of the reaction medium. The overall rate law for the redox reaction of MG and TiCl3 is as follows.\u0000 ","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":"141 2","pages":"181-194"},"PeriodicalIF":2.0,"publicationDate":"2024-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141189057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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 2 4区工程技术

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

Sanaz Shirahmad Haghighi, Razieh Jafari, Mozhgan Hosseinnezhad

{"title":"Colour gamut analysis of low-cost dye-sensitised solar cells using natural dyes","authors":"Sanaz Shirahmad Haghighi, Razieh Jafari, Mozhgan Hosseinnezhad","doi":"10.1111/cote.12767","DOIUrl":"10.1111/cote.12767","url":null,"abstract":"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.","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":"141 2","pages":"172-180"},"PeriodicalIF":2.0,"publicationDate":"2024-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140936135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0