Coloration Technology最新文献

Coloured polyhydroxyalkanoates: A review 有色聚羟基烷酸酯：综述

IF 2.2 4区工程技术

Coloration Technology Pub Date : 2025-07-02 DOI: 10.1111/cote.70013

Maria Luiza de Oliveira Zanini, Camila Rios Piecha, Ketnen Rieffel das Chagas, Patrícia Silva Diaz

{"title":"Coloured polyhydroxyalkanoates: A review","authors":"Maria Luiza de Oliveira Zanini, Camila Rios Piecha, Ketnen Rieffel das Chagas, Patrícia Silva Diaz","doi":"10.1111/cote.70013","DOIUrl":"https://doi.org/10.1111/cote.70013","url":null,"abstract":"Polyhydroxyalkanoates (PHAs) are a class of biopolymers produced by various microorganisms, with poly(3-hydroxybutyrate) being the most extensively studied. PHAs are widely studied as substitutes for conventional plastics due to their similar physicochemical properties. However, the production cost of PHAs remains high. In this context, the use of colours in biopolymers is a marketing tool that plays a significant role in influencing consumer purchasing behaviour. Therefore, the aim of this study was to review, analyse and compare different methodologies for colouring PHAs published to date. Studies reported various methods for colouring PHA films, which were classified into two main methodologies: (i) simultaneous synthesis and colouring of PHAs; and (ii) production and colouring of PHAs in different stages. The analysis revealed that the field of PHA colouring is still under-explored, with relatively few studies conducted to date. Further research is required to optimise the production processes for coloured biopolymers. Additionally, there is a need to investigate new classes of natural dyes for colouring PHA films and their application in innovative, environmentally sustainable products, such as intelligent and biodegradable packaging. This review article is the first to systematically assess the methodologies for colouring PHA films.","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":"141 5","pages":"603-620"},"PeriodicalIF":2.2,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.70013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145021821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Chemical constitutions in the Colour Index™: A century of colourant classification 颜色指数™中的化学成分：一个世纪的着色剂分类

IF 2 4区工程技术

Coloration Technology Pub Date : 2025-03-23 DOI: 10.1111/cote.12819

Andrew Towns

引用次数: 0

Effects of copper-doping on electrochromic properties of titanium dioxide films 铜掺杂对二氧化钛薄膜电致变色性能的影响

IF 2.2 4区工程技术

Coloration Technology Pub Date : 2025-02-16 DOI: 10.1111/cote.12817

Shengya Chen, Chu Xu, Liufen Xia, Yue Wu, Guodong Jiang, Dong Xiao, Yogendra Kumar Mishra, Jian Xiong

{"title":"Effects of copper-doping on electrochromic properties of titanium dioxide films","authors":"Shengya Chen, Chu Xu, Liufen Xia, Yue Wu, Guodong Jiang, Dong Xiao, Yogendra Kumar Mishra, Jian Xiong","doi":"10.1111/cote.12817","DOIUrl":"https://doi.org/10.1111/cote.12817","url":null,"abstract":"Doping with metal elements is a valid way to alter the electrochromic performance of single materials. The doped metal ions can modify the electronic structure of the pristine materials, this results in a change in the transfer and migration of electrons or ions in electrochromic reactions. In this work, a series of copper (Cu)-doped titanium dioxide (TiO2) films (0.5%, 1% and 5 wt%) were fabricated by a hydrothermal method and a subsequently spin-coated approach. The effects of doped Cu on the morphological structure, crystallinity, elemental chemical state and electrochromic properties of TiO2 films were evaluated by field emission scanning electron microscopy, high-resolution transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and electrochemical techniques. The doping of Cu into TiO2 exerts a substantial influence on its crystal structure, with a marked deterioration in crystallinity observed as the doping concentration increases. The results show that the ionic diffusion coefficient of the 0.5% Cu-TiO2 film is 7.74 × 10−10 cm2/s, the light modulation range is as high as 50.3%, the bleaching and colouring switching times are 1.95 and 16.43 s, respectively, and the light transmittance retention rate can be maintained after 200 cycles. Overall exhibits preferred electrochromic and electrochemical properties. This study indicates that Cu doping with moderate concentration is a feasible way to heighten the electrochromic property of TiO2.","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":"141 5","pages":"740-752"},"PeriodicalIF":2.2,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145022406","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

Colorimetry in food analysis using digital imaging system 数字成像系统在食品分析中的比色法

IF 2.2 4区工程技术

Coloration Technology Pub Date : 2025-02-03 DOI: 10.1111/cote.12813

Mousumi Sabat, Pramod Shelake, Nachiket Kotwaliwale

{"title":"Colorimetry in food analysis using digital imaging system","authors":"Mousumi Sabat, Pramod Shelake, Nachiket Kotwaliwale","doi":"10.1111/cote.12813","DOIUrl":"https://doi.org/10.1111/cote.12813","url":null,"abstract":"A non-destructive, user-friendly, portable colour measurement system was developed using the MATLAB interface that gives acceptable results with any imaging sensor. Digital images captured by the imaging sensor were used to obtain quantitative colour information in three formats, namely, RGB, XYZ and CIELAB. The zoom-in feature is useful for obtaining detailed colour features of the image, while cropping of the region of interest aids in reducing the image matrix and, ultimately, the computational power required. Quantitative information on the colour value of the product (both average and region to region) can be obtained in all three formats (i.e., RGB, XYZ and CIELAB). It also gives the three closest Royal Horticultural Society (RHS) values of the product. The accuracy of the measurement system was first validated against a standard colour chart then it was tested using three image sensors of different configurations. Coefficient of determination (R2) and root mean square error values of 0.983 and 3.391 for L*, 0.994 and 1.851 for a* and 0.996 and 2.042 for b*, respectively, were obtained during performance evaluation. Similarly, when different imaging sensors were used for colour determination, the colour values showed no significant variation for all tested samples (i.e., various fruits and vegetables of different chroma/hues).","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":"141 5","pages":"731-739"},"PeriodicalIF":2.2,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145022172","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

Enhanced Deep Stacked CapsNet Ensemble Gazelle Neural Network for multi-level fabric defect classification 增强的深度堆叠CapsNet集成瞪羚神经网络多层次织物缺陷分类

IF 2.2 4区工程技术

Coloration Technology Pub Date : 2025-01-27 DOI: 10.1111/cote.12805

Hattarki Pooja, Shridevi Soma

{"title":"Enhanced Deep Stacked CapsNet Ensemble Gazelle Neural Network for multi-level fabric defect classification","authors":"Hattarki Pooja, Shridevi Soma","doi":"10.1111/cote.12805","DOIUrl":"https://doi.org/10.1111/cote.12805","url":null,"abstract":"Fabric detection in the materials industry plays a vital role in the global economy, making effective quality control measures essential to ensure product value and reduce manufacturing waste. With the rise of Industry 4.0, manufacturing companies have been striving to develop automated fabric defect detection systems to overcome the limitations of traditional manual inspection. However, because of challenges in creating highly effective fabric defect detection methods with strong noise resistance, conventional systems often struggle to capture intricate fabric details and accurately distinguish between defect types. To address these challenges, this research introduces an innovative approach called the Enhanced Deep Stacked capsNet Ensemble Gazelle Neural Network (EDSEGNN) for multi-level local and global defect classification. By incorporating the Window-aware Guided Image Filtering technique, image quality and resolution are enhanced, enabling the detection of fine fabric details. Additionally, the Wavelet Packet Transform aids in segmenting fabric defects by identifying small patterns through varying frequency waves. In the final stage, the EDSEGNN model performs local defect identification and multi-level global defect classification, distinguishing between normal and defective patterns while categorising defect types like discoloration, stains, foreign objects, cuts, holes, thread issues and metal contamination. The proposed method achieves impressive results, with a peak accuracy of 99.8%, along with high recall (99.5%) and F1-score (99%), compared with existing methods. The proposed approach offers a highly accurate and robust solution to the challenges faced by traditional fabric defect detection systems, representing a valuable advance in automated quality control for the materials industry.","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":"141 5","pages":"711-730"},"PeriodicalIF":2.2,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145022366","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

Dyeing performance enhancement of ultra-high molecular weight polyethylene fabric via plasma and tannic acid treatment 等离子体和单宁酸处理提高超高分子量聚乙烯织物的染色性能

IF 2.2 4区工程技术

Coloration Technology Pub Date : 2025-01-16 DOI: 10.1111/cote.12806

Muhammad Ahmad, Guizhen Ke, Chunmei Chen

{"title":"Dyeing performance enhancement of ultra-high molecular weight polyethylene fabric via plasma and tannic acid treatment","authors":"Muhammad Ahmad, Guizhen Ke, Chunmei Chen","doi":"10.1111/cote.12806","DOIUrl":"https://doi.org/10.1111/cote.12806","url":null,"abstract":"In this study, the dyeing properties of atmospheric plasma and tannic acid surface modified ultra-high molecular weight polyethylene fabric were examined. The study focused on optimisation of colour strength. The effect of plasma treatment time and discharge power on colour strength was optimised. Dyeing parameters were optimised by running central composite response surface design of experiments. After dyeing, surface characteristics were observed by K/S (colour strength), colour fastness to soaping, scanning electron microscopy (SEM) and X-ray dispersive spectroscopy (XDS), Fourier Transform–infrared (FTIR) spectroscopy, rubbing fastness and contact angles, respectively. The response surface experimental design results showed better colour strength by reducing padder pressure and increasing the curing temperature and curing time. SEM showed increased roughness of surface and tannic acid adhesion to the surface. Both XDS and FTIR spectroscopy showed increased surface polarity. Enhanced durability was displayed at 1000 W for 20 seconds of exposure and 1% TA-<math>\u0000 <mrow>\u0000 <msup>\u0000 <mi>Na</mi>\u0000 <mo>+</mo>\u0000 </msup>\u0000 </mrow></math> (w/v) for 6 hours at pH 4-5. Contact angles showed enhanced hydrophilic behaviour. Also, the rubbing fastness was good. The process had a low cost. This approach was suitable because of the higher production rate of continuous dyeing, and it was also sustainable, considering that tannic acid is a natural resource and atmospheric plasma is a waterless treatment.","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":"141 5","pages":"694-710"},"PeriodicalIF":2.2,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145022407","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

Study of the colouristic capacity of the natural annatto dye in dyeing polyester fabrics and recycled yarns 天然红木染料染色涤纶织物和再生纱线的显色性能研究

IF 2.2 4区工程技术

Coloration Technology Pub Date : 2025-01-10 DOI: 10.1111/cote.12804

Crisleine Regina Hillesheim, Quethelen Elizabeth Araujo Garcez Rodrigues, Marcela Kotsuka da Silva, Carolina Krebs de Souza, Sávio Leandro Bertoli, Ivonete Oliveira Barcellos, Marcel Jefferson Gonçalves

{"title":"Study of the colouristic capacity of the natural annatto dye in dyeing polyester fabrics and recycled yarns","authors":"Crisleine Regina Hillesheim, Quethelen Elizabeth Araujo Garcez Rodrigues, Marcela Kotsuka da Silva, Carolina Krebs de Souza, Sávio Leandro Bertoli, Ivonete Oliveira Barcellos, Marcel Jefferson Gonçalves","doi":"10.1111/cote.12804","DOIUrl":"https://doi.org/10.1111/cote.12804","url":null,"abstract":"The textile sector has been the subject of research aimed at discovering more sustainable alternatives to harmful chemicals, and coloration technologies. In this study, the colouristic capacity of the natural annatto dye was evaluated in 100% polyester (PES) fabrics and in 100% PES fabrics with recycled thread. A comparative characterisation of a dye extracted directly from annatto seeds with a commercial natural dye was also carried out. The dyeing processes were conducted with the commercial natural dye at temperatures of 105, 110 and 115°C and pH levels of 4, 4.5 and 5, following a 22 full experimental design including two axial points and triplicate in the central point. The dyed fabric samples were subjected to wash fastness and dry and wet rubbing tests, to evaluate colour quality. The results were analysed using Statistica software, and the 100% PES fabric samples with the best exhaustion values (91.9%), colour intensity (K/S) values (1.44) and satisfactory fastness values were dyed at a temperature of 117°C and pH of 4.5. Furthermore, samples with recycled PES yarn were dyed and compared with conventional PES yarn, demonstrating similar dye and fastness characteristics, as well as intense coloration.","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":"141 5","pages":"680-693"},"PeriodicalIF":2.2,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145021812","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

Long short-term memory model for predicting the angle-dependent reflectance distributions for glossy and matte surfaces 预测光滑和哑光表面随角度变化的反射率分布的长短期记忆模型

IF 2.2 4区工程技术

Coloration Technology Pub Date : 2025-01-08 DOI: 10.1111/cote.12811

Shao-Tang Hung, Pei-Li Sun, Jui-Chang Chiang, Bao-Jen Pong, Hung-Shing Chen

{"title":"Long short-term memory model for predicting the angle-dependent reflectance distributions for glossy and matte surfaces","authors":"Shao-Tang Hung, Pei-Li Sun, Jui-Chang Chiang, Bao-Jen Pong, Hung-Shing Chen","doi":"10.1111/cote.12811","DOIUrl":"https://doi.org/10.1111/cote.12811","url":null,"abstract":"This study introduces an innovative recurrent neural network called long short-term memory (LSTM) as a prediction model, which is used to predict angle-dependent reflectance distributions of colour samples with glossy and matte surfaces. A two-dimensional (2D) reflectance measurement system was developed to measure the angle-dependent reflectance in this study. Its structure mainly included a semicircular rotating mechanism, a high-resolution digital camera and a high-quality white light-emitting diode. A semicircular rotating mechanism was designed to rotate from 10° to 170° in the vertical direction. Two ColorGauge miniaturised colour charts with glossy and matte surfaces were selected as test chips. The test chips on ColorGauge miniaturised colour charts included fives colours of glossy white, glossy black, matte red, matte green and matte blue. The reflectance distributions of the test chips were measured by the 2D reflectance measurement system, and the measured reflectance data were used as training data in the LSTM model. In comparison with second- and third-order regressions, the mean CIE lightness difference (0.09) using the LSTM model was lower. Therefore, it was verified that the LSTM model performed well in predicting reflectance distributions. In addition, the LSTM model was also validated on the additional test samples (10 matte chromatic samples and five glossy achromatic samples). The maximum and minimum mean CIE lightness differences were 3.77 and 0.64 for matte chromatic samples, and 2.34 and 0.42 for glossy achromatic samples, respectively. The results of small prediction errors indicated that the LSTM model presents excellent prediction performance.","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":"141 5","pages":"665-679"},"PeriodicalIF":2.2,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145022261","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

Enhancing pashmina fabric aesthetics: Assessing the dyeing efficacy of indigenous wild underutilised plants 提高羊绒织物的美感：评估未充分利用的本土野生植物的染色功效

IF 2.2 4区工程技术

Coloration Technology Pub Date : 2025-01-07 DOI: 10.1111/cote.12807

Irtizah Mushtaq, Amerjeet Singh, Asif H. Sofi, P. A. Sofi, P. A. Khan, G. M. Bhat, A. R. Malik, Heena Jalal, Iqbal Jeelani, Tuybia Bilal, Benatul-Behar, Sufiya Shabir

{"title":"Enhancing pashmina fabric aesthetics: Assessing the dyeing efficacy of indigenous wild underutilised plants","authors":"Irtizah Mushtaq, Amerjeet Singh, Asif H. Sofi, P. A. Sofi, P. A. Khan, G. M. Bhat, A. R. Malik, Heena Jalal, Iqbal Jeelani, Tuybia Bilal,  Benatul-Behar, Sufiya Shabir","doi":"10.1111/cote.12807","DOIUrl":"https://doi.org/10.1111/cote.12807","url":null,"abstract":"This study explores the use of dyes extracted from Berberis aristata and Bistorta amplexicaulis for dyeing pashmina fabric. The effectiveness of these plant-derived dyes was evaluated based on colour strength, absorption efficiency and fastness properties including washing, light and rubbing. Results indicate that both Berberis aristata and Bistorta amplexicaulis dyes significantly enhance the colour quality of pashmina fabric, with simultaneous mordanting yielding the highest colour strength and fastness properties, followed by premordanting. Berberis aristata exhibited poor light fastness (1), but showed excellent rubbing and washing fastness (5), while Bistorta amplexicaulis demonstrated good light fastness (4) and (4/5), as well as excellent performance in rubbing and washing fastness (5). Dye concentrations positively impacted colour strength, with higher concentrations resulting in deeper shades. The percentage absorption of the dye into the fabric was notably high, reflecting effective dye uptake. Mordant enhanced the colour quality of the fabric because of the increased efficiency in absorption, colour strength, colour coordinates and fastness grades in terms of washing, light and rubbing, respectively. These findings suggest that dyes from Berberis aristata and Bistorta amplexicaulis are promising for textile applications, offering vibrant, durable colours and adaptable dyeing methods.","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":"141 5","pages":"651-664"},"PeriodicalIF":2.2,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145022002","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

Thermochromic paint with three-stage colour transition effect based on thermochromic microcapsules and its crosslinking modification 基于热致变色微胶囊的三段式变色涂料及其交联改性

IF 2.2 4区工程技术

Coloration Technology Pub Date : 2025-01-02 DOI: 10.1111/cote.12808

Jingli Tang, Yichao Wang, Mengjuan He, Liqian Huang, Xueli Wang, Jianyong Yu

{"title":"Thermochromic paint with three-stage colour transition effect based on thermochromic microcapsules and its crosslinking modification","authors":"Jingli Tang, Yichao Wang, Mengjuan He, Liqian Huang, Xueli Wang, Jianyong Yu","doi":"10.1111/cote.12808","DOIUrl":"https://doi.org/10.1111/cote.12808","url":null,"abstract":"To expand the colour change range of thermochromic materials, two types of thermochromic microcapsules (TCMs) with different colour change temperatures and effects were utilised to prepare a TCMs blending system exhibiting a three-stage colour transition at temperatures ranging from 10 to 60°C. Thermochromic paints were then prepared based on this TCMs blending system using a modified waterborne polyurethane (WPU). The thermochromic properties of the TCMs blending system and the impact of crosslinking modification on the coating properties were investigated. The findings revealed that the ratio of TCMs influences the colour change effect and temperature of the blending system. With temperature variations, the colour of the TCMs blending system can reversibly transition between blue, green and yellow, offering a more vibrant thermochromic effect compared with conventional thermochromic materials. The modified WPU enabled the preparation of paint from the blending system, which was applied to fabric surfaces to create multistage thermochromic fabrics. The mechanical properties, water resistance and adhesion of the modified coating were enhanced, and the colour fastness to washing of the fabrics improved by two grades. This study has practical significance for the application of TCMs and the development of colour-changing textiles.","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":"141 5","pages":"640-650"},"PeriodicalIF":2.2,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145021820","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