Coloration Technology最新文献

{"title":"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)","authors":"Andrew Towns","doi":"10.1111/cote.12799","DOIUrl":"https://doi.org/10.1111/cote.12799","url":null,"abstract":"","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":"141 1","pages":"118-119"},"PeriodicalIF":2.0,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143114355","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":"Physico-chemical characterisation and light stability of dyes and pigments found in cultural heritage objects: Insights from microfading testing for assessing light fastness","authors":"Julio M. del Hoyo-Meléndez","doi":"10.1111/cote.12788","DOIUrl":"https://doi.org/10.1111/cote.12788","url":null,"abstract":"<p>Understanding the chemistry of dyes and pigments found in cultural heritage objects and their permanence is central for their preservation. Heritage science research has generally focused on either identification of materials present on actual objects or accelerated and natural ageing of mock-up samples prepared using historically accurate methods to simulate the materiality of cultural heritage objects. A more recent strategy is the integration of these two research areas, which provides a holistic approach to assess both the chemical composition and stability of materials. Over the last 30 years, microfading testing (MFT) has notably contributed to understanding materials' responsiveness to light, minimising damage to objects from museum lighting and revealing insights into molecular structures of dyes and pigments, when employed in conjunction with other techniques. By combining MFT with diverse analytical methods, including imaging, spectroscopy, microscopy and chromatography, a more comprehensive approach is achieved. This joined-up strategy contributes to improved decision-making processes in the conservation and preservation of cultural heritage objects.</p>","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":"141 3","pages":"265-290"},"PeriodicalIF":2.0,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091335","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":"Exploring the dyeing potential of annatto dye on linen substrate: An inquiry into the effects of different mordants","authors":"André Luiz Marquardt,&nbsp;Carlos Rafael Silva de Oliveira,&nbsp;Ana Carolina Volkmann,&nbsp;Isadora Bertini Martins Francisco,&nbsp;Afonso Henrique da Silva Júnior,&nbsp;Catia Rosana Lange de Aguiar","doi":"10.1111/cote.12789","DOIUrl":"https://doi.org/10.1111/cote.12789","url":null,"abstract":"<p>This study aimed to compare the dyeing capacity of annatto dye on linen textile substrates under the influence of different mordants, such as ferrous sulphate, alum, chitosan, and poly(diallyldimethylammonium chloride) (PDDACl). Annatto dye was extracted in an alcoholic medium, and the concentrations of the dye compounds bixin and norbixin were determined using ultraviolet-visible spectrophotometry. Dyeing experiments were conducted with 10% and 20% weight of material (s.p.m.) concentrations, both on mordant-treated substrates and on substrates pre-bleached only. The colour evaluation indicated better colour yields for substrates pretreated with alum and PDDACl, with colour strength (<i>K/S</i>) values of 41.14 and 38.74, respectively, for dyeing with 20% s.p.m. However, these substrates exhibited the highest colour deviation (<i>∆E</i>) values in washing and lightfastness tests. The substrate pretreated with ferrous sulphate and the substrate pre-bleached only showed <i>K/S</i> values of 25.99 and 18.68, respectively, with the ferrous sulphate-treated substrate exhibiting the lowest <i>∆E</i> values in washing and lightfastness tests among all evaluated substrates. Chitosan-cationised samples showed the lowest colour yield, with a <i>K/</i>S of 12.51. Regarding washing and lightfastness, the pre-bleached only substrate and the chitosan-pretreated substrate displayed intermediate ∆𝐸 values. The dyeing kinetics of pre-bleached substrates exhibited pseudo-first-order behaviour, while for ferrous sulphate-pretreated samples, pseudo-second-order behaviour was observed. Langmuir's adsorption model was suitable for pre-bleached substrate dyeing and ferrous sulphate-pretreated sample dyeing in adsorption isotherms. However, for mordanted samples, higher adsorption intensity was observed.</p>","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":"141 3","pages":"405-422"},"PeriodicalIF":2.0,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091519","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":"Research on full-colour gamut matching of wool blended yarn based on the Kubelka–Munk prediction algorithm","authors":"Wenshuo Zhu,&nbsp;Yuan Xue,&nbsp;Jingli Xue,&nbsp;Xianqiang Sun,&nbsp;Guang Jin","doi":"10.1111/cote.12791","DOIUrl":"https://doi.org/10.1111/cote.12791","url":null,"abstract":"<p>This article aims to solve the problems of a high inventory of coloured fibres, low efficiency of manual colour matching and poor repeatability in the woollen textile industry. Seven primary colour fibres were prepared based on seven selected primary colours, namely, red, yellow, green, cyan, blue, magenta and grey, which were then divided into six groups of ternary primary colour fibres. Next, six ternary coupling-combination grid colour-mixing models were constructed and merged into a full-colour gamut grid colour-mixing model. Based on this, 241 types of blended yarns and knitted fabrics were prepared. A colour-matching system for wool colour-spun yarns was constructed based on the Kubelka–Munk colour prediction algorithm and the full-colour gamut grid colour-mixing model. Training samples, test samples and validation samples are planned in each colour-mixing area for constructing the colour-matching system and validating its predictive performance. The results of spinning experiments show that full-colour gamut spinning within the mixing range of seven primary colour fibres is achieved based on the constructed full-colour gamut grid colour-mixing model. The predicted results of test samples and validation samples show that the average colour difference between the predicted colour value and the measured colour value is 0.642, and the average error <span></span><math>\u0000 <mrow>\u0000 <msub>\u0000 <mi>E</mi>\u0000 <mtext>RMSE</mtext>\u0000 </msub>\u0000 </mrow></math> formed by the predicted blending ratio and the actual blending ratio of primary colour fibres is 0.0223. The results indicate that the constructed colour-matching system achieved an accurate prediction of colour values and the blending ratio of primary colour fibres for blended yarns.</p>","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":"141 3","pages":"386-404"},"PeriodicalIF":2.0,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091783","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":"Bio-based polyethylene masterbatch preparation and investigation of the effect of process conditions on pigment dispersion","authors":"Mert Yücetürk,&nbsp;M. Özgür Seydibeyoğlu","doi":"10.1111/cote.12790","DOIUrl":"https://doi.org/10.1111/cote.12790","url":null,"abstract":"<p>Although the importance of bio-polyethylene is increasing, academic research on the subject is still limited. The dispersion level of pigments and functional additives plays a crucial role in achieving the desired effect from polymer composites. This study investigates the effects of additives and process conditions on pigment dispersion in bio-polyethylene masterbatches using four different factors and three different parameters by the Taguchi method. To achieve this, the relative colour strengths of extruder-produced masterbatches were measured using a spectrophotometer, blown film samples were visually observed and filter pressure values were examined in a filter tester. The results were subjected to Taguchi analysis to determine which factors and parameters are important to the process and which can be neglected. The study identified the physical properties of the wax, extruder screw speed, barrel temperature and mixer time as the most effective factors on pigment dispersion, respectively. Micronised wax was found to be the most critical parameter among wax types, while mixer mixing time was found to be the least important. It was observed in all the experiments that the colour strength obtained from a constant pigment content in the masterbatches was improved by increasing the dispersion and reducing the number of agglomerated particles.</p>","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":"141 3","pages":"375-385"},"PeriodicalIF":2.0,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12790","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091912","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":"Investigation of the application angle and mode parameters on colour fading obtained in laser process","authors":"Rıza Atav,&nbsp;Öner Gündüz,&nbsp;Sercan Yaz,&nbsp;Gizem Çakan","doi":"10.1111/cote.12785","DOIUrl":"10.1111/cote.12785","url":null,"abstract":"<p>In this study, the effect of four factors affecting colour fading in the laser process (resolution in the <i>X</i> direction, resolution in the <i>Y</i> 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 &gt; HDR Soft &gt; 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.</p>","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":"141 3","pages":"367-374"},"PeriodicalIF":2.0,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142182218","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 chromophore type on efficiency of reactive dye removal using polyamidoamine dendrimer","authors":"Riza Atav,&nbsp;Eray Akkuş,&nbsp;Deniz İzlen Çifçi,&nbsp;Uğur Ergünay,&nbsp;Yalçın Güneş,&nbsp;Elçin Güneş","doi":"10.1111/cote.12786","DOIUrl":"10.1111/cote.12786","url":null,"abstract":"<p>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.</p>","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":"141 3","pages":"356-366"},"PeriodicalIF":2.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12786","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142182229","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":"Preparation and characterisation of pH-responsive indicator ink for pork freshness monitoring","authors":"Haichuan Hu,&nbsp;Jianqiang Wang,&nbsp;Haolin Sun,&nbsp;Yuheng Chen,&nbsp;Jinghua Chen","doi":"10.1111/cote.12784","DOIUrl":"10.1111/cote.12784","url":null,"abstract":"<p>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 &gt;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.</p>","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":"141 3","pages":"344-355"},"PeriodicalIF":2.0,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142227639","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":"The plasticisation model of dye diffusion: Part 2","authors":"Stephen M. Burkinshaw","doi":"10.1111/cote.12782","DOIUrl":"10.1111/cote.12782","url":null,"abstract":"<p>Temperature dependent equilibrium dye adsorption data reported for <i>Chlorazol Fast Scarlet 8B, Durazol Red 2B</i> and <i>Chrysophenine G</i> on cotton, CV and CUP fibres and <i>Durazol Grey RG</i> 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 <i>Chrysophenine G</i> 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.</p>","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":"141 2","pages":"125-143"},"PeriodicalIF":2.0,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12782","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142182230","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":"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","authors":"Enayatollah Moradi Rufchahi,&nbsp;Fatemeh Ashuri Mirsadeghi","doi":"10.1111/cote.12781","DOIUrl":"10.1111/cote.12781","url":null,"abstract":"<p>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(1<i>H</i>)-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 <i>E</i> and <i>Z</i> configurations. The isomers populations and the rotation phenomenon can be controlled by changing the polarity of the solvents. The <i>E/Z</i> ratio of each synthesised compound was studied in deuterated dimethyl sulfoxide (DMSO-<i>d</i>₆) and, if soluble in deuterated chloroform (CDCl₃) and compared. The results reveal that a decrease in solvent polarity (upon changing the solvent from DMSO-<i>d</i>₆ to CDCl₃) shifts the isomeric balance to <i>Z</i>-geometrical form and substantially increase the <i>E/Z</i> 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-<i>d</i>₆ indicate that the dipole moments of the <i>Z</i> configurations are significantly higher than those of the <i>E</i> structures.</p>","PeriodicalId":10502,"journal":{"name":"Coloration Technology","volume":"141 3","pages":"325-343"},"PeriodicalIF":2.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141882375","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}