A new method for determination of the relative colour strength of dye based on new colour depth formula. Part II: application to different batches of colourant / Wanzi Xie in COLORATION TECHNOLOGY, Vol. 139, N° 1 (02/2023)  

[article]  inCOLORATION TECHNOLOGY > Vol. 139, N° 1 (02/2023) . - p. 68-78 Titre : A new method for determination of the relative colour strength of dye based on new colour depth formula. Part II: application to different batches of colourant Type de document : texte imprimé Auteurs : Wanzi Xie, Auteur ; Hongbo Wang, Auteur ; Hongying Yang, Auteur ; Jingjing Zhang, Auteur ; Mengyuan Qi, Auteur Année de publication : 2023 Article en page(s) : p. 68-78 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants -- Analyse Colorimétrie Réflectance Saturation (colorimétrie) Index. décimale : 667.3 Teinture et impression des tissus Résumé : As a standard for the evaluation of relative colour strength (RCS) of dye, AATCC EP-6 (SWL [K/S], SUM, and WSUM) has been widely used, while its limitations are often overlooked by people. In Part I of this study, the new method Yangn (CSV1, CSV2, and CSV3) for the determination of RCS were proposed, Yangn and AATCC EP-6 were tested using the different types of disperse dyes that have approximate hues. However, the calculations of RCS for the same dyes produced in different batches were also necessary, therefore, this article (Part II) focuses on it. The HL series dyes produced in 2020 and 2021 were used to test Yangn and AATCC EP-6. The same results as Part I, the colour strength values calculated by SWL, SUM, and WSUM were inconsistent. Furthermore, in the methods of AATCC EP-6, the colour strength values calculated by WSUM should be at least rounded to four decimal places to avoid false calculation; the value of Yangn only need to be rounded to two decimal places. For the RCS of the same dyes produced in different batches, the methods of AATCC EP-6 and Yangn were relatively the same under different dyeing concentrations. The coefficient of variation (CV) values of Yangn were < 1.3%, the CV values of AATCC EP-6 were < 2%. Therefore, according to the consistency of the calculation, the CV values and the dependence on the concentration, the new methods of Yangn were superior to the traditional methods. Note de contenu : - EXPERIMENTAL : Materials - Dyeing - Colour measurement - RESULTS AND DISCUSSIONS : The RCS of E-type dyes - The relative colour strength of SE-type dyes - Further check - Table 2 : Dyeing concentrations of E-type and SE-type disperse dyes - Table 3 : The test conditions of colour measuring - Table 4 : Ranking of the colour strength values calculated by SWL, SUM, and WSUM - Table 5 : The relative colour strength (RCS) calculated by X-Rite Colour i7 and author for 0.1 owf (%) concentration - Table 6 : The coefficient of variation (CV) values of the relative colour strength (RCS) of the dyes produced in 2020 and 2021 calculated by AATCC EP-6 and Yangn - Table 7 : The reflectance factor values of the E-type dyes at the maximum absorption - Table 8 : The coefficient of variation (CV) values of the relative colour strength (RCS) of the E-type dyes in the range 10–25% - Table 9 : The coefficient of variation (CV) values of the relative colour strength (RCS) of the SE-type dyes produced in 2020 and 2021 at eight dye concentrations calculated by AATCC EP-6 and Yangn - Table 10 : The coefficient of variation (CV) values of the relative colour strength (RCS) of the SE-type dyes in the range 10–25% - Table 11 : The reflectance factor values of the SE-type dyes at the maximum absorption - Table 12 : The average coefficient of variation (CV) values of the relative colour strength (RCS) from the study of Part I and Part II DOI : https://doi.org/10.1111/cote.12636 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12636 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39206 [article]

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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]

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