Dépouillements

Coloration with nanoparticles : Scope for developing simultaneous colouring and functional properties onto textile surfaces—a short review / Chanchal Kumar Kundu in COLORATION TECHNOLOGY, Vol. 138, N° 5 (10/2022)  

[article]  inCOLORATION TECHNOLOGY > Vol. 138, N° 5 (10/2022) . - p. 443-455 Titre : Coloration with nanoparticles : Scope for developing simultaneous colouring and functional properties onto textile surfaces—a short review Type de document : texte imprimé Auteurs : Chanchal Kumar Kundu, Auteur ; Tanvir Hossen, Auteur ; Saha Rajib, Auteur Année de publication : 2022 Article en page(s) : p. 443-455 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Argent Composés inorganiques Composés organiques Matériaux -- Propriétés fonctionnelles Nanoparticules Teinture -- Fibres textiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : Increasing environmental pressures over the last few years have led to attention for non-biocide treatments in the wood protection field. The ε-caprolactone modification of wood by substitution or blocking of hydroxyl groups with hydrophobic poly(ε-caprolactone) (PCL) is one of the novel modification methods developed in recent years. In this study, ring-opening polymerization of ε-caprolactone in wood cell walls was evaluated by the 3rd and 6th re-use of recovered monomer and by oven-curing method. Spruce samples were modified by re-used ε-caprolactone and exposed to the natural weathering agents for 12 months. After weathering, the color change, surface roughness measurements, and macroscopic and ultra-microscopic observations revealed that the modified wood had better surface properties than reference wood. FT-IR analysis proved that PCL was on the weathered surface up to the 6th months, but very little amount was detected on the surfaces with a longer weathering period. The results clearly showed that the efficiency of PCL modification with re-use of the monomer solution was sufficient during the initial weathering periods, but efficiency was reduced after a prolonged exposure period. Note de contenu : - MATERIALS AND METHODS - RESULTS AND DISCUSSION : Results of tensile and tear strength - Results of colour measurements - Results of dimensional stability - Results of skew movement - Results of colourfastness to rubbing and areal density - Table 1 : Quality parameters of the yarns used in denim fabrics - Table 2 : Specifications of the denim fabric - Table 3 : Processes - Table 4 : Tests performed and standards - Table 5 : Descriptions of industrial denim washing techniques - Table 6 : Strength values of the fabrics - Table 7 : Measured CIELab values of samples - Table 8 : Colour differences between the samples of standard and reduced process methods - Table 9 : Colour fastness to rubbing and areal density of the samples - Table 10 : Water, electricity, and natural gas consumption of processes - Table 11 : Energy and environmental impacts of the process Référence de l'article : https://doi.org/10.1111/cote.12621 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12621 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38120 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
23613	-	Périodique	Bibliothèque principale	Documentaires	Disponible

The roles of polymer relaxation phenomena, aqueous dye solubility and the physical properties of water in the mechanism of adsorption of a disperse dye on poly(ethylene terephthalate) fibres : Part 1 polymer relaxation phenomena / Stephen M. Burkinshaw in COLORATION TECHNOLOGY, Vol. 138, N° 5 (10/2022)  

[article]  inCOLORATION TECHNOLOGY > Vol. 138, N° 5 (10/2022) . - p. 456-473 Titre : The roles of polymer relaxation phenomena, aqueous dye solubility and the physical properties of water in the mechanism of adsorption of a disperse dye on poly(ethylene terephthalate) fibres : Part 1 polymer relaxation phenomena Type de document : texte imprimé Auteurs : Stephen M. Burkinshaw, Auteur ; Kangsheng Liu, Auteur Année de publication : 2022 Article en page(s) : p. 456-473 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants -- Adsorption Colorants -- Solubilité Phénomènes de relaxation (matériaux) Polyéthylène téréphtalate Polymères Teinture -- Fibres textiles synthétiques Température Transition vitreuse Index. décimale : 667.3 Teinture et impression des tissus Résumé : To investigate the contributions of polymer relaxation phenomena to the mechanism of disperse dye adsorption on poly(ethylene terephthalate) fibres, a commercial grade dye was applied to poly(ethylene terephthalate) fabric at temperatures between 30°C and 130°C. Three regions of temperature-dependent dyeing behaviour were identified, in which the promotional effect imparted by increasing dyeing temperature varied, depending on whether dyeing had been carried out at temperatures that were below, within or above the polymer's glass transition temperature, Tg, namely < 65°C, between 65°C and 110°C and between 110°C and 130°C, respectively. When experimentally determined colour strength data points (log 1/fk) were fitted to plots of polymer structural relaxation (log aT) calculated using the Williams, Landel and Ferry equation as a function of (T − Tg), three different levels of correspondence were achieved which paralleled the observed three regions of temperature-dependent dye uptake. The adsorption of the commercial disperse dye on the poly(ethylene terephthalate) fibre therefore concurs with the free volume model of dye diffusion insofar as the diffusional behaviour of the dye is related to the relaxation time of the molecular motions occurring within the poly(ethylene terephthalate) polymer. The finding that the poly(ethylene terephthalate) substrate's glass transition extends over a broad range of temperature upto ~110°C explains why elevated dyeing temperatures in the region of 130/140°C must be used in High Temperature dyeing processes, and also, why ~75% of uptake of the commercial disperse dye on the poly(ethylene terephthalate) fabric occurs over the very narrow 20-30°C critical temperature range between 110 and 130°C/140°C. Note de contenu : - EXPERIMENTAL : Materials - Equipment - Methods - RESULTS AND DISCUSSION : Temperature-dependency of disperse dye adsorption - Glass transition temperature of the PET fabric - Interpretation of the temperature-dependence of disperse dye adsorption - Table 1 : Water-induced plasticisation of various poly(ethylene terephthalate) (PET) materials DOI : https://doi.org/10.1111/cote.12604 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12604 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38121 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
23613	-	Périodique	Bibliothèque principale	Documentaires	Disponible

A new method for determining relative colour strength of dye based on new colour depth formulas. Part I : For different dyes with approximate hue / Wanzi Xie in COLORATION TECHNOLOGY, Vol. 138, N° 5 (10/2022)  

[article]  inCOLORATION TECHNOLOGY > Vol. 138, N° 5 (10/2022) . - p. 474-484 Titre : A new method for determining relative colour strength of dye based on new colour depth formulas. Part I : For different dyes with approximate hue Type de document : texte imprimé Auteurs : Wanzi Xie, Auteur ; Hongbo Wang, Auteur ; Jingjing Zhang, Auteur ; Mengyuan Qi, Auteur Année de publication : 2022 Article en page(s) : p. 474-484 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants -- Analyse Colorimétrie Teinture -- Fibres textiles Tags : Colorant  'Intensité  relative'  'Profondeur  de  la  couleur'  'Teinture  textile' Index. décimale : 667.9 Revêtements et enduits Résumé : Relative colour strength (RCS) of dye plays an important role in the production, the evaluation and the application of dyes. There are different standards on the determination of it, their principles are all related to colour depth. However, the standard methods have some limitations. For this purpose, this study proposed a new method for the RCS based on the new colour depth formula Yangn, which included three methods named colour strength value (CSV1, CSV2 and CSV3). Part I in this study was to investigate the application effect of Yangn on the RCS of different disperse dyes with approximate hues. According to the experimental results of E-type and SE-type disperse dyes, the new method showed its advantages. Firstly, compared with AATCC EP-6, the results of the new method were more consistent. Secondly, under different dyeing concentrations, the RCS values of the new method were relatively consistent, with average coefficient values (CVs) being less than 5%, especially for CSV3 with only 3.59%; while all the average CVs of AATCC EP-6 were greater than 6%. For the calculation of RCS of different types of dyes with approximate hue, the new method presented more accurate results. Note de contenu : - INTRODUCTION : Significance of relative colour strength of dye - Colour strength value - RCS of dye - NEW METHODS FOR RCS : The new colour depth formulas Yangn - New formula of RCS - EXPERIMENTAL : Materials - Calculation - RESULTS AND DISCUSSION : The calculations of E-type disperse dyes - The calculations of SE-type disperse dyes - Further check - Table 1 : Names of experimental disperse dyes - Table 2: Dyeing concentrations of E-type and SE-type disperse dyes - Table 3 : Ranking of the colour strength values calculated by SWL, SUM and WSUM Table 4 : The variation coefficient values (CVs) of the relative colour strength (RCS) of E-HL series and E-N series dyes calculated by AATCC EP-6 and Yangn - Table 5 : The variation coefficient values (CVs) of the relative colour strength (RCS) of SE-HL series and SE-N series dyes calculated by AATCC EP-6 and Yangn - Table 6 : The deviations of hue angle (Δh°) of HL-series and N-series dyes - Table 7 : The coefficient values (CVs) of relative colour strength (RCS) of all HL-series and N-series dyes calculated by the AATCC EP-6 and Yangn DOI : https://doi.org/10.1111/cote.12623 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12623 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38122 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
23613	-	Périodique	Bibliothèque principale	Documentaires	Disponible

An evaluation of the properties of denim dyed with sulphur dyeing by elimination of pre-treatment processes in COLORATION TECHNOLOGY, Vol. 138, N° 5 (10/2022)  

[article]  inCOLORATION TECHNOLOGY > Vol. 138, N° 5 (10/2022) . - p. 485-494 Titre : An evaluation of the properties of denim dyed with sulphur dyeing by elimination of pre-treatment processes Type de document : texte imprimé Année de publication : 2022 Article en page(s) : p. 485-494 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants au soufre Les colorants au soufre sont des colorants utilisés pour teindre de façon assez économique des fibres cellulosiques, principalement dans des nuances sombres (noir, brun, bleu foncé). Insolubles à l'état oxydé, ils sont rendus solubles par réduction à la soude caustique pour la teinture, dans un procédé analogue aux colorants de cuve, plus chers. Les colorants s'obtiennent par action du soufre sur des composés organiques, notamment sur le 2-4-dinitrophénol (Sulphur Black 1) ou le toluène-2-4-diamine et la 4-nitroaniline (Sulphur Brown 12). Colorimétrie Eau -- Consommation Énergie -- Consommation Essais dynamiques Jeans Solidité de la couleur Spécifications Stabilité dimensionnelle Teinture -- Fibres textiles Textiles et tissus -- Lavage Index. décimale : 667.3 Teinture et impression des tissus Résumé : In recent years, the low-environmental impact technology has given rise to new types of treatment in the textile industry. From the environmental point of view, mainly the textile dyeing process constitutes a significant pollution problem due to the variety and complexity of chemicals employed. Denim has been identified with indigo dyestuff throughout history. However, the percentage of warp yarn woven with sulphur-dyed denim (included in the denim group of products) has increased in recent years. The justification of this study is to create a new concept in denim fabric dyeing. Conventional denim fabric properties have been tried to be obtained with less process. A novel method with a less environmentally detrimental technique that limits the use of water, chemicals, and other resources has been developed to achieve traditional denim fabric qualities. The colour changes, tensile-tear strength, skew movement, dimensional stability, and the rubbing fastness values of fabrics dyed using these methods were examined comparatively. According to the results, the properties of fabric treated with the developed dyeing method, are very similar to those of the standard dyed fabrics. The tensile and tear strength values of the fabrics dyed using the reduced process method increased. The dimensional change and movement values of the fabric dyed with the new technique are higher. Fabric dyed with the conventional method has the highest K/S value but the lowest L* value. The greatest ΔE value was seen in fabrics with stone+hypo washing. The rubbing fastness value of the fabric dyed with the reduced process method was better. Note de contenu : - MATERIALS AND METHODS - RESULTS AND DISCUSSION : Results of tensile and tear strength - Results of colour measurements - Results of dimensional stability - Results of skew movement - Results of colourfastness to rubbing and areal density - Table 1 : Quality parameters of the yarns used in denim fabrics - Table 2 : Specifications of the denim fabric - Table 3 : Processes - Table 4 : Tests performed and standards - Table 5 : Descriptions of industrial denim washing techniques - Table 6 : Strength values of the fabrics - Table 7 : Measured CIELab values of samples - Table 8 : Colour differences between the samples of standard and reduced process methods - Table 9 : Colour fastness to rubbing and areal density of the samples - Table 10 : Water, electricity, and natural gas consumption of processes - Table 11 : Energy and environmental impacts of the process DOI : https://doi.org/10.1111/cote.12606 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12606 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38123 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
23613	-	Périodique	Bibliothèque principale	Documentaires	Disponible

A novel approach for recipe prediction of fabric dyeing based on feature-weighted support vector regression and particle swarm optimisation / Feng Li in COLORATION TECHNOLOGY, Vol. 138, N° 5 (10/2022)  

[article]  inCOLORATION TECHNOLOGY > Vol. 138, N° 5 (10/2022) . - p. 594-508 Titre : A novel approach for recipe prediction of fabric dyeing based on feature-weighted support vector regression and particle swarm optimisation Type de document : texte imprimé Auteurs : Feng Li, Auteur ; Caiting Chen, Auteur ; Zhiping Mao, Auteur Année de publication : 2022 Article en page(s) : p. 594-508 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse vectorielle Coton Le coton est une fibre végétale qui entoure les graines des cotonniers "véritables"(Gossypium sp.), un arbuste de la famille des Malvacées. Cette fibre est généralement transformée en fil qui est tissé pour fabriquer des tissus. Le coton est la plus importante des fibres naturelles produites dans le monde. Depuis le XIXe siècle, il constitue, grâce aux progrès de l'industrialisation et de l'agronomie, la première fibre textile du monde (près de la moitié de la consommation mondiale de fibres textiles). Optimisation par essaims particulaires L'optimisation par essaims particulaires (OEP ou PSO en anglais) est une métaheuristique d'optimisation, inventée par Russel Eberhart (ingénieur en électricité) et James Kennedy (socio-psychologue) en 1995. Algorithme Cet algorithme s'inspire à l'origine du monde du vivant. Il s'appuie notamment sur un modèle développé par Craig Reynolds à la fin des années 1980, permettant de simuler le déplacement d'un groupe d'oiseaux. Une autre source d'inspiration, revendiquée par les auteurs, James Kennedy et Russel Eberhart, est la socio-psychologie. Cette méthode d'optimisation se base sur la collaboration des individus entre eux. Elle a d'ailleurs des similarités avec les algorithmes de colonies de fourmis, qui s'appuient eux aussi sur le concept d'auto-organisation. Cette idée veut qu'un groupe d'individus peu intelligents peut posséder une organisation globale complexe. Ainsi, grâce à des règles de déplacement très simples (dans l'espace des solutions), les particules peuvent converger progressivement vers un minimum global. Cette métaheuristique semble cependant mieux fonctionner pour des espaces en variables continues. (Wikipedia) Prévision, Théorie de la Taffetas Le taffetas est, au sens premier du terme, un tissu d'armure toile en soie. - Histoire : L'appellation est réputée venir d'un mot persan ("taftâ"), désignant littéralement "ce qui est tissé". On trouve ainsi l'expression "armure taffetas" en confection pour désigner une armure de toile (tissée selon le principe : un fil pris, un fil laissé). Les taffetas se distinguent selon leurs motifs, ou les couleurs de fils utilisés dans leurs chaînes et leurs trames. Ainsi que la matière qui le recouvre. On distingue : le taffetas amidonné ; le taffetas barré ; le taffetas broché ; le taffetas caméléon ; le taffetas chiné ; le taffetas damier ; le taffetas de laine ; le taffetas prismatique ; le taffetas prussien ; le taffetas changeant. (Wikipedia) Teinture -- Fibres textiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : Recipe prediction is one of the most critical steps in the fabric dyeing industry. The conventional Kubelka–Munk model and neural network techniques have been widely used in recipe prediction systems. However, there are some limitations to these two methods : predictions using the Kubelka–Munk model may not be robust enough; and neural networks require large amounts of training data. Therefore, this paper investigates a novel recipe prediction method for fabric dyeing based on feature-weighted support vector regression and particle swarm optimisation. Feature-weighted support vector regression improved with particle swarm optimisation was first developed to predict the CIELab coordinates for given dye concentrations, expressed as . Particle swarm optimisation was utilised again in the recipe prediction stage to search for the optimal recipe in an iterative process. The optimisation criterion is to minimise the colour differences (CMC [2:1]) between the CIELab value calculated by feature-weighted support vector regression improved with particle swarm optimisation and the target CIELab of a swatch. Dyeing data based on two different fabrics (cotton and taffeta) were used in the experiment. The proposed method revealed good results with a slight average colour difference between the target and reproduced colours. The absolute percentage errors in predicting concentrations were less than 5% in most of our experimental recipes. In addition, the comparative experimental results illustrate that our method had higher accuracy and better practical applicability than other methods. Note de contenu : - METHODOLOGY AND PROPOSED RECIPE PREDICTION METHOD INTRODUCTION : Basic algorithm introduction - Proposed recipe prediction method - EXPERIMENTAL : Dataset - Evaluation index - RESULTS AND DISCUSSION : Results analysis of the proposed method - Comparison and discussion - Table 1 : CIELab coordinates and recipes for the validation set of dyed taffeta samples - Table 2 : CIELab coordinates and recipes for the validation set of dyed cotton samples - Table 3 : Recipe prediction results for the validation set of dyed taffeta - Table 4 : Recipe prediction results for the validation set of dyed cotton - Table 5 : Comparison of prediction errors of different methods in the validation set DOI : https://doi.org/10.1111/cote.12607 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12607 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38124 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
23613	-	Périodique	Bibliothèque principale	Documentaires	Disponible

A single-step pad-steam cationisation and dyeing process for improving dyeing properties of cotton fabrics / Lei Wang in COLORATION TECHNOLOGY, Vol. 138, N° 5 (10/2022)  

[article]  inCOLORATION TECHNOLOGY > Vol. 138, N° 5 (10/2022) . - p. 509-521 Titre : A single-step pad-steam cationisation and dyeing process for improving dyeing properties of cotton fabrics Type de document : texte imprimé Auteurs : Lei Wang, Auteur ; Guangyuan Xie, Auteur ; Xiang Mi, Auteur ; Xiaohu Kang, Auteur ; Qiuyu Zhu, Auteur ; Zhicheng Yu, Auteur Année de publication : 2022 Article en page(s) : p. 509-521 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cationisation Colorants réactifs Coton Le coton est une fibre végétale qui entoure les graines des cotonniers "véritables"(Gossypium sp.), un arbuste de la famille des Malvacées. Cette fibre est généralement transformée en fil qui est tissé pour fabriquer des tissus. Le coton est la plus importante des fibres naturelles produites dans le monde. Depuis le XIXe siècle, il constitue, grâce aux progrès de l'industrialisation et de l'agronomie, la première fibre textile du monde (près de la moitié de la consommation mondiale de fibres textiles). Teinture -- Fibres textiles Teinture au tampon Index. décimale : 667.3 Teinture et impression des tissus Résumé : The cationic modification technology for cotton could greatly enhance colour strength and fixation of reactive dyes. However, it is a two-step method when cationic modification is applied to salt-free dyeing. Cotton fabric is initially treated with a cationic compound through exhaust or pad-cure, acid washing and drying process, then the cationic modified cotton is dyed with reactive dye. In this study, a single-step pad-steam cationisation and dyeing process was proposed to shorten the process and improve dye fixation. The fixation reaction between reactive dye and cotton fabrics was conducted at the temperature range 100–140°C and relative humidity range 40–90%. The effects of quaternary ammonium salt and inorganic salt as well as alkaline agent on K/S value and dye fixation were also studied. Furthermore, the drying kinetic of the wet cotton fabric was studied in this article. The result showed that the drying process fitted well to the Page model. The effective moisture diffusivity of wet cotton under different steaming conditions were calculated. An activation energy value of 32.25 kJ/mol was determined. Compared with the conventional process, a single-step pad-steam cationisation and dyeing process not only shortened the process but also increased K/S value and dye fixation. Note de contenu : - MATERIALS AND METHODS : Materials - Pad-dyeing process - Fabric testing - RESULTS AND DISCUSSION : Effect of steaming temperature and time on the single-step pad-steam cationisation and dyeing process - Effect of relative humidity on the single-step pad-steam cationisation and dyeing process - Effect of quaternary ammonium salt and inorganic salt on the single-step pad-steam cationisation and dyeing process - Effect of NaHCO3 concentration on the single-step pad-steam cationisation and dyeing process - Analysis of drying characteristics and effect of the water on the single-step pad-steam cationisation and dyeing process - Comparison of different pad-dyeing processes - Table 1 : Five thin layer drying models used for experimental data - Table 2 : Dry model fitting results - Table 3 : Calculation of effective moisture diffusion coefficient - Table 4 : The K/S value, dye fixation and colourfastness of cotton fabric with different pad-dyeing processes DOI : https://doi.org/10.1111/cote.12608 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12608 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38125 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
23613	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Colour-patterned fabric defect detection based on an unsupervised multi-scale U-shaped denoising convolutional autoencoder model / Hongwei Zhang in COLORATION TECHNOLOGY, Vol. 138, N° 5 (10/2022)  

[article]  inCOLORATION TECHNOLOGY > Vol. 138, N° 5 (10/2022) . - p. 522-537 Titre : Colour-patterned fabric defect detection based on an unsupervised multi-scale U-shaped denoising convolutional autoencoder model Type de document : texte imprimé Auteurs : Hongwei Zhang, Auteur ; Shuting Liu, Auteur ; Quanlu Tan, Auteur ; Shuai Lu, Auteur ; Le Yao, Auteur ; Zhiqiang Ge, Auteur Année de publication : 2022 Article en page(s) : p. 522-537 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Détection de défauts (Ingénierie) Impression sur étoffes Textiles et tissus -- Défauts Index. décimale : 667.3 Teinture et impression des tissus Résumé : This study proposes an unsupervised, learning-based, reconstructed scheme and a residual analysis-based defect detection model for colour-patterned fabric defect detection problems in the clothing process industry. It solves the challenging problems of existing supervised fabric defect detection methods, such as high costs in manually labelling samples and designing features, unstable generalisation ability and scarcity of defective samples. First, for a specific texture, the training set was constructed by collecting easily accessible defect-free colour-patterned fabric images. Second, a multi-scale U-shaped denoising convolutional autoencoder was modelled using defect-free samples, which can reconstruct the newly tested colour-patterned fabric images automatically. Subsequently, a residual map between the original image and corresponding reconstructed image was calculated. Finally, the defective areas were detected and accurately localised by further opening operations. The experimental results indicated that the proposed method is valid and robust for detecting defects in various colour-patterned fabrics. Moreover, with the YDFID-1 dataset, compared with other models, the intersection over union index of the model proposed in the current paper was improved by at least 3.95%. Note de contenu : - PRELIMINARIES : The traditional U-Net mode - THE PROPOSED METHOD FOR COLOUR-PATTERNED FABRIC DEFECT DETECTION : The UDCAE model - The multi-scale UDCAE model - The model training phase - The model testing phase for defect detection - EXPERIMENTAL RESULTS AND ANALYSIS : Description of datasets - Experimental platform - Evaluation metrics - Qualitative and quantitative performance analyses - Table 1 : The number of colour-patterned fabric samples - Table 2 : The PSNR and SSIM values of reconstructed results with 11 loss functions - Table 3 : Comparison of time consumption of four loss functions in the training and testing phase - Table 4 : The PSNR and SSIM values of reconstructed defect-free results with four models - Table 5 : Comparison of four evaluation indicators of defect detection results with five models - Table 6 : Comparisons of AUROC of defect detection results with six models DOI : https://doi.org/10.1111/cote.12609 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12609 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38126 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
23613	-	Périodique	Bibliothèque principale	Documentaires	Disponible

The relationship between the substitution position of hydrophobic groups on near-magenta anthraquinone dyestuffs and the dyeing performance for polypropylene fabric dyed in supercritical carbon dioxide in COLORATION TECHNOLOGY, Vol. 138, N° 5 (10/2022)  

[article]  inCOLORATION TECHNOLOGY > Vol. 138, N° 5 (10/2022) . - p. 538-550 Titre : The relationship between the substitution position of hydrophobic groups on near-magenta anthraquinone dyestuffs and the dyeing performance for polypropylene fabric dyed in supercritical carbon dioxide Type de document : texte imprimé Année de publication : 2022 Article en page(s) : p. 538-550 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anthraquinone Colorants -- Analyse Couleur -- Analyse Dioxyde de carbone Fluides supercritiques Magenta Le magenta est un colorant rouge violacé d'aniline de synthèse inventé en 1858, appelé fuchsine ou roséine. C'est aussi la désignation normalisée du colorant primaire absorbant le vert dans la synthèse soustractive des couleurs en imprimerie et en photographie argentique. Polypropylène Teinture -- Fibres textiles synthétiques Index. décimale : 667.3 Teinture et impression des tissus Résumé : A series of 1-amino-4-hydroxy-2-phenoxyanthraquinone derivatives, substituted with various hydrophobic groups, were applied as dyestuffs in the carbon dioxide supercritical fluid dyeing (SFD) of unmodified polypropylene (PP) fabrics. The dyeability, colour strength, and colour fastness of the dyeing process were evaluated for 14 dyestuffs. The hue of the PP fabrics dyed with a series of dyestuffs was red of near-magenta, but it was slightly less bluish rather than magenta. The differences in dyeing performance regarding the type and position of the substituents were observable in terms of colour strength and colour fastness. On the basis of the evaluation of the colour strength and the colour fastness, this study showed that the type and position of the hydrophobic group attached to the substituted phenoxy ring affected dyeing performance. Comparisons of the dyeing performance of 2- and 4-substituted dyestuffs with the same groups attached suggested that replacement of the 2-position affected colour strength while 4-position affected colour fastness. Similarly, 2,4-disubstituted dyestuff was more suitable on the dyeing performance than 4-monosubstituted dyestuff in which alkyl had twice the amount of aliphatic carbon at one position, and 3,5-disubstituted dyestuff. Note de contenu : - EXPERIMENTAL : Materials - Methods - RESULTS AND DISCUSSION : The analysis of dyestuffs - The structural characteristic indices of dyestuff molecules - Colour strength and hue - Colour fastness and dyestuff structure - Optimum dyestuff selection - Table 1 : The substituent groups and their positioning for the dyestuffs used in this study - Table 2 : The proton nuclear magnetic resonance (1H NMR) chemical shift peaks of the employed dyestuffs and their high-performance liquid chromatography (HPLC) purity - Table 3 : The hydrophobicity and aliphaticity of the dyestuffs used in this study - Table 4 : The colour fastness of the dyed polypropylene (PP) fabrics DOI : https://doi.org/10.1111/cote.12610 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12610 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38127 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
23613	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Design and synthesis of diazirine-containing dyes for polypropylene fibre : A study on the effect of alkyl chain / Guangluo Guo in COLORATION TECHNOLOGY, Vol. 138, N° 5 (10/2022)  

[article]  inCOLORATION TECHNOLOGY > Vol. 138, N° 5 (10/2022) . - p. 551-564 Titre : Design and synthesis of diazirine-containing dyes for polypropylene fibre : A study on the effect of alkyl chain Type de document : texte imprimé Auteurs : Guangluo Guo, Auteur ; Hua Jiang, Auteur ; Liqin Chai, Auteur ; Zhihua Cui, Auteur ; Weiguo Chen, Auteur Année de publication : 2022 Article en page(s) : p. 551-564 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation Colorants -- Synthèse Colorants dispersés Catégorie de colorants très peu solubles dans l'eau, utilisés à l'origine comme colorants pour l'acétate, et qui généralement sont appliqués sous forme de suspensions aqueuses de faible concentration.Les colorants dispersés sont largement utilisés dans la teinture de la plupart des fibres manufacturées, surtout le polyester. Colorants réactifs Diazirines Les diazirines sont une classe de molécules organiques constituées d'un carbone lié à deux atomes d'azote, qui sont doublement liés l'un à l'autre, formant un cycle de type cyclopropène , le 3H -diazirène. Ils sont isomères avec les groupements diazocarbonés , et comme eux peuvent servir de précurseurs aux carbènes par perte d'une molécule de diazote . Par exemple, l'irradiation des diazirines avec de la lumière ultraviolette conduit à l'insertion de carbène dans diverses liaisons CH, NH et OH. Par conséquent, les diazirines ont gagné en popularité en tant que petits réactifs de réticulation photoréactifs. Ils sont souvent utilisés dans le marquage par photoaffinitéétudes pour observer une variété d'interactions, y compris les interactions ligand-récepteur, ligand-enzyme, protéine-protéine et protéine-acide nucléique. (Wikipedia) Fixation (chimie) Hydrophobie Polypropylène Solidité de la couleur Teinture -- Fibres textiles synthétiques Textiles et tissus -- Propriétés mécaniques Index. décimale : 667.3 Teinture et impression des tissus Résumé : The dyeing of polypropylene fabrics utilising conventional-disperse dyes often meets poor colour yield and fastness problems, fundamentally caused by the low affinity between dyes and polypropylene fibres. In this article, a new class of hydrophobic reactive dyes that can react with polypropylene were designed using diazirine moiety as a reactive group, azo structure as a chromophore, and an ester group as a linking bridge. The difference among these dyes was the alkyl chain length on the azo chromophore, which was used to fine-tune the affinity between the dyes and fibre. The structures of the synthesised dyes and intermediates were characterised and confirmed using nuclear magnetic resonance, mass spectrometry, and infrared spectrometry. The absorption and thermal properties of the dyes were also studied to ensure their feasibility for dyeing application. In addition, the diazirine dyes were successfully applied to dye polypropylene fabrics using a two-step process by dyeing in a non-aqueous solvent and fixing it under heating. The dyes and polypropylene fibre were demonstrated to react, where the fixation values were in the range 64.5–76.4%. The systematic study of the structure–property relationship demonstrated the positive effect of the alkyl chain in promoting colour yield, however, accompanied by a slightly reduced fixation value. Due to the chemical bonding of the dye molecules to the fibre, the dyed polypropylene fabrics exhibited excellent colour fastness property, making the dyeing technology very promising for future industrial applications. Note de contenu : - EXPERIMENTAL SECTION : Materials and instrumentation - Synthesis of compounds 3a–3d - Synthesis of compounds D1–D4 - Dyeing method - Determination of colour yield - DMF extraction and determination of fixation value - Determination of colour fastness level - Determination of mechanical property - RESULTS AND DISCUSSION : Synthesis and characterisation of dyes D1–D4 - Results of dyeing and DMF treatment - The effect of fixing temperature - The effect of fixing time - The effect of dye concentration - Colour assessment - Colour fastness - Mechanical properties of the dyed fabrics - Analysis of dyeing and fixing mechanism - Table 1 : Shock sensitivity and explosion propagation values of D1–D4 - Table 2 : Colour parameters of the polypropylene fabrics dyed with D1–D4 - Table 3 : Colour fastness data of polypropylene fabrics dyed with D1–D4 DOI : https://doi.org/10.1111/cote.12613 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12613 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38128 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
23613	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Synthesis and application of novel glucose derived nonionic gemini surfactant / Zhiwei Xu in COLORATION TECHNOLOGY, Vol. 138, N° 5 (10/2022)  

[article]  inCOLORATION TECHNOLOGY > Vol. 138, N° 5 (10/2022) . - p. 565-578 Titre : Synthesis and application of novel glucose derived nonionic gemini surfactant Type de document : texte imprimé Auteurs : Zhiwei Xu, Auteur ; Qianqian Cheng, Auteur ; Xiangdong Zhou, Auteur Année de publication : 2022 Article en page(s) : p. 565-578 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse thermique Caractérisation Colorants dispersés Catégorie de colorants très peu solubles dans l'eau, utilisés à l'origine comme colorants pour l'acétate, et qui généralement sont appliqués sous forme de suspensions aqueuses de faible concentration.Les colorants dispersés sont largement utilisés dans la teinture de la plupart des fibres manufacturées, surtout le polyester. Fibres polyesters Mesure Surfactants -- Synthèse Teinture -- Fibres textiles synthétiques Index. décimale : 667.3 Teinture et impression des tissus Résumé : A novel group of nonionic gemini surfactant (GTPEA) with ethylidene spacer structure was prepared from glucose-lactone, triethylenetetramine, alkyl epoxy polyether and acyl chloride of different alkyl chain lengths. The chemical structure of GTPEA were characterised by Fourier-transform infrared (FTIR) spectroscopy, nuclear magnetic resonance (NMR) and high-resolution mass spectrometry (HRMS). The thermal properties of the three surfactants were characterised by thermogravimetric analysis (TGA). The critical micelle concentrations (cmc values) of GTPEA with different hydrophobic chain lengths were measured using the Wilhelmy plate method (cmc: 1.58 × 10−5 to 5.01 × 10−6 mol/L). The solubilisation, emulsification and solubilisation performance tests showed the excellent surface properties of nonionic gemini surfactants. GTPEA-12 with a hydrophobic carbon chain length of 12 carbon atoms was selected to explore the dispersing performance of surfactants on disperse dyes and the levelling performance of polyester fibre disperse dyes. The test results have shown that the dispersion force was 96%, and the particle size of 0.1 g disperse dye was 196 nm in 100 ml of 4 g/L GTPEA-12 solutions. Finally, GTPEA-12 was used as a levelling agent in the dispersion dyeing of polyester fabrics. GTPEA-12 of 0.1 g/L can provide an excellent levelling effect of S(λ) = 0.026 for polyester and has little impact on the colour yield (K/S = 5.0) of polyester fabric. Note de contenu : - EXPERIMENTAL SECTION : Materials - Synthesis of nonionic gemini surfactant - Dyeing process of polyester fabric - Measurements - RESULTS AND DISCUSSION : Thermal analysis - Surface performance - Used in the dyeing of polyester disperse dyes - Table 1 : Surface active parameters of GTPEA - Table 2 : Maximum solubilisation volume and solubilisation power of different surfactants - Table 3 : The effect of K/S value and levelness S(λ) by levelling agent DOI : https://doi.org/10.1111/cote.12614 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12614 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38129 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
23613	-	Périodique	Bibliothèque principale	Documentaires	Disponible