Coloration Technology最新文献

{"title":"The roles of elevated temperature and carriers in the dyeing of polyester fibres using disperse dyes: Part 4 plasticisation model of dye diffusion","authors":"Stephen M. Burkinshaw","doi":"10.1111/cote.12748","DOIUrl":"10.1111/cote.12748","url":null,"abstract":"<p>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.</p>","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12748","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140570589","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}

{"title":"Enzymatic coloration of polyamide fabrics and its comparison with conventional dyeing","authors":"Rıza Atav, Ece Karagören, Selma Soysal, İsmail Yakin","doi":"10.1111/cote.12762","DOIUrl":"https://doi.org/10.1111/cote.12762","url":null,"abstract":"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.","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140323506","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}

{"title":"Application of three‐way mixed multivariate analysis of variance method to detect changes in chromatic coordinates (L*, a*, b*) in building granites","authors":"J. García‐Talegón, A. C. Iñigo, J. Paredes, R. A. Sepúlveda Correa, E. Azofra","doi":"10.1111/cote.12761","DOIUrl":"https://doi.org/10.1111/cote.12761","url":null,"abstract":"In the present work we determined the chromatic coordinates (<jats:italic>L</jats:italic>*, <jats:italic>a</jats:italic>*, <jats:italic>b</jats:italic>*) 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 (<jats:italic>L</jats:italic>*, <jats:italic>a</jats:italic>*, <jats:italic>b</jats:italic>*) 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 (↓<jats:italic>L</jats:italic>*), redness (↑<jats:italic>a</jats:italic>*) and much less intensity towards yellowing (↑<jats:italic>b</jats:italic>*).","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140198913","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}

{"title":"Optimal design of colour formulation prediction for cotton fabrics based on NSGA-II and TOPSIS","authors":"Zeyan Zhou, Zijian Lin, Yue Ma, JiaRong Niu, Jianyong Liu, Xiaoyin Wang","doi":"10.1111/cote.12749","DOIUrl":"https://doi.org/10.1111/cote.12749","url":null,"abstract":"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.","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140108036","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}

{"title":"Effect of mordants on colour variation in alpaca fibre dyed with dye extracted from the tankar stem (Berberis boliviana L.)","authors":"Franklin Lozano, Sofia Tapía‐Pacci, Ruth Ccopa, Arturo Quispe‐Quispe, Juan C. Salazar‐López","doi":"10.1111/cote.12760","DOIUrl":"https://doi.org/10.1111/cote.12760","url":null,"abstract":"The objective of the research was to evaluate the effect of mordants on colour variation, textile characteristics, colour fastness, and Fourier‐transform infrared (FTIR) bands in alpaca fibre dyed with tankar stem extract. The white alpaca fibre was obtained from the company Inka Tops S.A. The mordants used were: alum (KAl(SO<jats:sub>4</jats:sub>)<jats:sub>2</jats:sub>·12H<jats:sub>2</jats:sub>O) at 20% and iron(II) sulphate (FeSO<jats:sub>4</jats:sub>) at 3%. Prior to dyeing, a pre‐mordanting process was carried out (86°C for 30 min), and dyeing was performed through thermal treatment at 70 and 86°C (30 and 60 min). The CIELab [<jats:italic>L</jats:italic>*, <jats:italic>a</jats:italic>*, <jats:italic>b</jats:italic>*, chroma (<jats:italic>C</jats:italic>*) and hue (h°)] coordinates and reflectance were evaluated using a spectrometer; textile characteristics were assessed with OFDA (optical fibre diameter analyser) 2000; chemical bands were analysed with an FTIR‐attenuated total reflectance (ATR) spectrophotometer, and colour fastness (light, washing, and rubbing) was evaluated using international American Association of Textile Chemists and Colorists (AATCC) standards. The results showed that luminosity (<jats:italic>L</jats:italic>*) significantly decreased after dyeing and pre‐mordanting with KAl(SO<jats:sub>4</jats:sub>)<jats:sub>2</jats:sub>·12H<jats:sub>2</jats:sub>O (81.47) and FeSO<jats:sub>4</jats:sub> (70.47). Additionally, the <jats:italic>b</jats:italic>* value and <jats:italic>C</jats:italic>* value significantly increased at higher temperature and longer dyeing time, resulting in slightly different shades and hues in each treatment. The coefficient of variation (CV) and curvature index (CU) presented significant differences, with CU increasing at 86°C/60 min with FeSO<jats:sub>4</jats:sub>. Colour fastness to washing and rubbing showed acceptable values on the greyscale. In conclusion, the mordants used had a significant effect on colour variation, textile characteristics, colour fastness, and FTIR spectrum. The most intense shades were observed in fibres pre‐mordanted with FeSO<jats:sub>4</jats:sub> (dull yellow‐green) and in dyeing without mordant (yellow).","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140074259","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}

{"title":"Prediction of colour strength in environmentally-friendly dyeing of polyester fabric with madder using supercritical carbon dioxide","authors":"Aminoddin Haji, Morteza Vadood, Merve Öztürk, İdil Yigit, Semiha Eren, Hüseyin Aksel Eren","doi":"10.1111/cote.12757","DOIUrl":"https://doi.org/10.1111/cote.12757","url":null,"abstract":"The textile industry is one of the significant reasons for global water pollution, with dyeing processes being particularly environmentally detrimental. Researchers have explored alternative approaches to address this issue, such as using natural dyes, supercritical fluids and so forth. In addition to environment-friendly approaches, reducing the number of experiments in studies, accurate production straightaway and using artificial intelligence (AI), one of the technologies of the present and the future that will provide significant support. Reaching clearer results with AI technology will not necessarily contribute to environment-friendly technologies. However, AI techniques, including artificial neural networks (ANNs) and adaptive neuro fuzzy interface system (ANFIS) were employed to predict the colour strength (<i>K/S</i>) of the dyed fabric based on process parameters. A comprehensive experimental design involving pressure, temperature, and time variations was conducted, and the results were analysed using multi-factor analysis of variance (MANOVA). The study demonstrates that supercritical carbon dioxide (scCO₂) dyeing with madder on polyester fabric is a promising and environmentally friendly approach. Additionally, the optimised ANN and ANFIS models, aided by genetic algorithms (GAs), exhibit high predictive accuracy (less than 3%), providing insights into the impact of process parameters on colour strength. This research underscores the potential of AI-driven automation in textile dyeing, offering solutions for dye formula prediction, colour matching, and defect detection, reducing the need for human intervention in these processes.","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140026159","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}

{"title":"Enhancing polyamide fabric performance through green reduction of graphene oxide for superior ultraviolet protection and electrical conductivity","authors":"Nergis Demirel Gültekin, İsmail Usta, Bahattin Yalçin","doi":"10.1111/cote.12759","DOIUrl":"https://doi.org/10.1111/cote.12759","url":null,"abstract":"In this study, a polyamide warp‐knitted fabric was treated with a graphene oxide (GO) aqueous dispersion using a laboratory‐type Jigger dyeing machine. Subsequently, the GO underwent a chemical reduction process, employing rosehip extract powder as a nature‐based reducing agent. The effect of reduction time (12 and 24 h) was investigated. The study involved an examination of the surface morphology, colour coordinates, and colour difference of both the GO coated and reduced graphene oxide (RGO) coated fabrics. Additionally, the colour fastness against rubbing was assessed. Furthermore, electrical resistivity measurements were conducted on the GO‐coated polyamide‐6,6 fabric both before and after the reduction process. The ultraviolet (UV) transmittance and ultraviolet protection factor (UPF) of both GO‐coated and reduced fabrics were determined. The study also explored the effect of the washing process on colour properties, electrical resistivity, and UPF. Notably, the lowest electrical surface resistivity and the highest UPF rating were obtained as 1.20 × 10<jats:sup>2</jats:sup> kΩ/sq and 50+ after the reduction process. Additionally, after the washing process, the electrical surface resistivity increased, while the UPF rating remained 50+, indicating excellent UV protection.","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140016820","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}

{"title":"Evaluation of the extracts of purple basil (Ocimum basilicum L.) as natural pH-indicator dyes anticipated to be utilised in intelligent food packaging—an optimisation study","authors":"Elif Erez, Beste Bayramoglu","doi":"10.1111/cote.12754","DOIUrl":"https://doi.org/10.1111/cote.12754","url":null,"abstract":"Purple basil (<i>Ocimum basilicum</i> L.) extract has significant potential as a natural colorimetric pH-indicator material owing to its abundance in anthocyanins. This contribution is the first to optimise the ultrasound-assisted extraction of purple basil by response surface methodology in terms of maximum total monomeric anthocyanin (TMA) content and pH-dependent increase in green intensity (IGI) using a three-level, three-factor Box–Behnken design. The latter was considered as a measure of the pH-indicator ability of the extracts. The independent variables were ethanol concentration, solvent/solid ratio, and extraction time for two types of solvents [aqueous ethanol with 0.1% (v/v) acetic acid (Ac) or hydrochloric acid]. Optimum conditions were determined for single and combined responses. The extracts were further characterised according to total phenolic content (TPC), percentage polymeric colour (PPC), 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid (ABTS) antioxidant, and 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activities. All models explained more than 93% of the variability. The combined response model for the Ac-acidified system gave more favourable optimal conditions [55.25% (v/v) ethanol, 30 mL/g solvent/solid ratio and 39.24 min] regarding lower ethanol consumption and shorter times. Validation experiments verified the model successfully predicted the responses. The corresponding TMA, IGI, PPC, TPC, ABTS, and DPPH values were determined as 4.83 ± 0.18 mg cyanidin-3-glucoside equivalent, 2.29 ± 0.05, 68.07 ± 3.17, 28.79 ± 1.54 mg gallic acid equivalent, 55.85 ± 1.71 mg Trolox equivalent, and 16.80 ± 1.08 mg ascorbic acid equivalent per gram dry weight, respectively.","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139926263","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}

{"title":"Improving the coloration depth and fastness of poly(ethylene-vinyl acetate) foam dyed with disperse dye by carrier dyeing and film formation","authors":"Dongxia Yao, Shaofeng Lu, Zhenheng Huang, Haizhu Wang","doi":"10.1111/cote.12755","DOIUrl":"https://doi.org/10.1111/cote.12755","url":null,"abstract":"In order to solve the problems of poor dyeing properties and the colour fastness to ageing of poly(ethylene-vinyl acetate) (EVA) foam, good dyeing performance was obtained by disperse dye carrier dyeing method, and the colour fastness to ageing was improved by surface film forming. The effect of dyeing process on dyeing properties was investigated by the single factor variable method. The effect of film formation on colour fastness to ageing was also studied. The results showed that disperse dye carrier dyeing could significantly improve the dyeing depth of EVA foam. Addition of carrier and prolongation of dyeing time could significantly improve the colour strength (<i>K/S</i>) values and dye penetration. However, the increase of the dosage of dyes and the concentration of the carrier could lead to a serious decrease of the colour fastness to ageing of EVA. The colour fastness to ageing of EVA could be obviously improved by film forming on the surface. Waterborne polyurethane film-forming agent could improve the colour fastness to ageing by 1.5 grades, but the rubbing fastness was poor. When waterborne polyurethane and acrylate film-forming agent were compounded, the colour fastness to ageing and the colour fastness to rubbing could be improved.","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139764393","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}

{"title":"Investigation of the effects of colour on the user's fabric handle perception and warm/cool feeling","authors":"Rıza Atav, Seda Keskin","doi":"10.1111/cote.12756","DOIUrl":"https://doi.org/10.1111/cote.12756","url":null,"abstract":"Colour has been an indispensable element for humanity from past to present. Colour, which in the past was used only to add visual appeal and to differentiate from others, is now also used for various functional purposes (such as textiles that change colour with heat). The aim of this study is to investigate whether the fabric colour has an effect on the handle perception and warm/cool feeling of the user. Studies have shown that, in subjective evaluations, fabrics with warm colours (yellow, red and orange) cause softer and warmer feeling than those with cool colours (blue, green and purple). In fact, considering that there is no statistically significant difference between the handle and temperature values determined by objective test methods, it can be said that this perception may arise from the psychological effect of colour. All these results reveal that colour, beyond adding visual appreciation to the fabric, also has an effect on handle perception and warm/cool feeling, which play an important role in the purchasing process for customers.","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139764310","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}