Acryloyl esters of emodin for waterless dyeing and toxicological studies / Gabriel Rampazzo Magalhães in COLORATION TECHNOLOGY, Vol. 140, N° 4 (08/2024)  

[article]  inCOLORATION TECHNOLOGY > Vol. 140, N° 4 (08/2024) . - p. 620-628 Titre : Acryloyl esters of emodin for waterless dyeing and toxicological studies Type de document : texte imprimé Auteurs : Gabriel Rampazzo Magalhães, Auteur ; Gabriely Fernanda Groto Militao, Auteur ; Natália Oliveira de Farias, Auteur ; Anjaina Fernandes de Albuquerque, Auteur ; Marina Tenório Botelho, Auteur ; Riikka Räisänen, Auteur ; Harold S. Freeman, Auteur ; Gisela de Aragão Umbuzeiro, Auteur Année de publication : 2024 Article en page(s) : p. 620-628 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse toxicologique Dioxyde de carbone Esters acryloyles d'émodine Fluides supercritiques Matériaux -- Modifications chimiques Mutagènes Teinture -- Fibres textiles synthétiques Index. décimale : 667.3 Teinture et impression des tissus Résumé : Traditional textile dyeing processes usually require large quantities of water and energy and generate wastewater that can be harmful to the environment. Dyeing in supercritical carbon dioxide (sc-CO2) media is promising in textile coloration due especially to it providing a waterless process and eliminating the need for an energy intensive drying step. The natural anthraquinone emodin showed promising results for dyeing different fibres through sc-CO2 process. However, emodin is mutagenic. The aim of this study was to develop non-mutagenic derivatives of emodin that can be applied to textiles using sc-CO2. Emodin structure was modified incorporating acryloyl groups, which are considered suitable for decreasing potential for DNA intercalation, and thus mutagenicity. The presence of acryloyl groups would also enable atmospheric plasma induced bonding with fibres. Molecular modelling studies showed that emodin derivatives became less planar with increasing number of attached acryloyl groups, making intercalation unlikely. The derivatives produced were tested to assess mutagenicity in vitro (Salmonella/microsome assay, TA1537, 10% S9) and in vivo (micronucleus test in hemocytes of aquatic crustacean). We found that emodin can be derivatised using acryloyl chlorides to give mono- and di-acrylate esters suitable for dyeing polyester fibres in sc-CO2. However, the new dyes presented mutagenicity for both in vitro and in vivo. Although the derivatives provided greenish-yellow alternatives to emodin for dyeing synthetic fibres, they do not appear to be viable alternatives from the point of view of preserving human and environmental health. Plasma bonding studies are underway. Note de contenu : - EXPERIMENTAL METHODS : Derivatisation of emodin - Dyeing procedure - In vitro mutagenicity – MPA test - In vivo mutagenicity – micronuclei test - RESULTS AND DISCUSSIONS : Derivatisation of emodin - Dyeing results - In vitro mutagenicity – MPA - In vivo mutagenicity – micronuclei test DOI : https://doi.org/10.1111/cote.12731 En ligne : https://drive.google.com/file/d/1F0gLFzT7inodHcDvNrqKS32lF_doZY4w/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41322 [article]

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Afterclearing of disperse dyed polyester with gaseous ozone / Hüseyin Aksel Eren in COLORATION TECHNOLOGY, Vol. 128, N° 2 (2012)  

[article]  inCOLORATION TECHNOLOGY > Vol. 128, N° 2 (2012) . - p. 75-81 Titre : Afterclearing of disperse dyed polyester with gaseous ozone Type de document : texte imprimé Auteurs : Hüseyin Aksel Eren, Auteur ; Dilek Ozturk, Auteur ; Semiha Eren, Auteur Année de publication : 2012 Article en page(s) : p. 75-81 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Ozonation Polyesters Teinture -- Fibres textiles synthétiques Index. décimale : 667.3 Teinture et impression des tissus Résumé : The efficiency of ozone treatment for the clearing of disperse dyed polyethylene terephthalate fibres has been examined. The ozone treatment for the clearing of the dyed samples was performed by blowing the ozone gas from the ozone generator on to the wet fabric samples. The results indicated that 3- and 5-min ozonation times were appropriate to achieve comparable wash fastness results with conventional reduction clearing without significant colour differences (?E* value) for the samples dyed with CI Disperse Yellow 23 and CI Disperse Blue 79, respectively; however, the ozonation time had to be increased to 15 min for CI Disperse Red 82. Tensile strength tests and scanning electron microscopy analysis indicated that the ozone treatment did not cause any severe damage to the fabrics. Ozone treatment for the afterclearing of disperse dyed polyester fabric can lead to energy and time savings and environmental load reduction when compared with conventional reduction clearing. This study tested a new method of ozone application for clearing of disperse dyed polyester by blowing ozone directly on to the fabric samples. This new method of application has the advantage of being readily adoptable for continuous treatment lines and lower water consumption. Note de contenu : - EXPERIMENTAL : Materials - Preparation and dyeing of the substrates - Reduction clearing of the dyed PET fabric - Ozone application procedure - Colour strength and colour difference measurements - Wash fastness evaluation - Tensile strength and elongation at break - Surface examination by scanning electron microscopy - RESULTS AND DISCUSSION : Evaluation of the colour yield of dyed fabrics - Evaluation of the wash fastness properties - Evaluation of the effect of ozonation on tensile strength - Evaluation of the surfaces by SEM DOI : 10.1111/j.1478-4408.2011.00350.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2011.00350.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=14878 [article]

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Alkali dissolution behaviour of sea–island-type polyethylene terephthalate ultramicrofibre knitted fabrics / Hyun Sung Kim in COLORATION TECHNOLOGY, Vol. 130, N° 5 (10/2014)  

[article]  inCOLORATION TECHNOLOGY > Vol. 130, N° 5 (10/2014) . - p. 334-339 Titre : Alkali dissolution behaviour of sea–island-type polyethylene terephthalate ultramicrofibre knitted fabrics Type de document : texte imprimé Auteurs : Hyun Sung Kim, Auteur ; Eun Suk Shin, Auteur ; Jung Jin Lee, Auteur Année de publication : 2014 Article en page(s) : p. 334-339 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bases (chimie) Calorimétrie Colorants cationiques Dissolution (chimie) Fibres textiles synthétiques Hydroxyde de sodium L'hydroxyde de sodium, appelé également soude caustique7, est un corps chimique composé minéral de formule chimique NaOH, qui est à température ambiante un solide ionique. Fusible vers 318 °C, il se présente généralement sous forme de pastilles, de paillettes ou de billes blanches ou d'aspect translucide, corrosives et très hygroscopiques. Il est très soluble dans l'eau et légèrement soluble dans l'éthanol. La solution d'hydroxyde de sodium, souvent appelée soude, est une solution aqueuse transparente. Concentrée, elle est corrosive et souvent appelée lessive de soude. Les propriétés chimiques de l'hydroxyde de sodium sont surtout liées à l'ion hydroxyde HO- qui est une base forte. En outre, l'hydroxyde de sodium réagit avec le dioxyde de carbone (CO2) de l'air et se carbonate. La solubilité de la soude caustique dans l'eau augmente avec la température, à pression constante ou ambiante. Microfibres Microscopie électronique à balayage Polyéthylène téréphtalate Teinture -- Fibres textiles synthétiques Tricot Index. décimale : 667.3 Teinture et impression des tissus Résumé : Sea–island-type polyethylene terephthalate ultramicrofibre (0.007 denier per filament) with a single fibre diameter of ca. 800 nm has been produced over the last 4 years. Three kinds of sea–island-type polyethylene terephthalate knitted fabric manufactured from this ultramicrofibre were alkali treated, and their dissolution behaviour was investigated. It was found that the dissolution ratio was dependent upon temperature and sodium hydroxide concentration in the alkali treatment. Practical dissolution ratios mostly reached the theoretical values after alkali treatment with 1.0% (w/w) sodium hydroxide solution at 95 °C for 40 min in all samples. Alkali dissolution of the sea component and revealing of the island component were confirmed by differential scanning calorimetry and scanning electron microscopy. Alkali dissolution behaviour could also be monitored indirectly by the cationic dye staining method. While all untreated samples exhibited high colour yield values after cationic dyeing, alkali-treated samples showed reduced colour yield values with increasing alkali treatment time and a final levelling-off point. Note de contenu : - EXPERIMENTAL : 1. Materials - 2. Alkali dissolution - 3. Differential scanning calorimetry - 4. Cationic dyeing - 5. Scanning electron microscopy - RESULTS AND DISCUSSION : 1. Dissolution radio - 2. Cationic dye staining - 3. Surface and cross-sectional morphology DOI : 10.1111/cote.12105 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12105 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22071 [article]

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Alkaline weight reduction and dyeing properties of black dope-dyed poly(ethylene terephthalate) microfibre fabrics / Shekh Mohamed Mamum Kabir in COLORATION TECHNOLOGY, Vol. 133, N° 3 (06/2017)  

[article]  inCOLORATION TECHNOLOGY > Vol. 133, N° 3 (06/2017) . - p. 209-217 Titre : Alkaline weight reduction and dyeing properties of black dope-dyed poly(ethylene terephthalate) microfibre fabrics Type de document : texte imprimé Auteurs : Shekh Mohamed Mamum Kabir, Auteur ; Joonseok Koh, Auteur Année de publication : 2017 Article en page(s) : p. 209-217 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Calorimétrie Dissolution (chimie) Microfibres Microscopie électronique à balayage Noir de carbone Polyéthylène téréphtalate Teinture -- Fibres textiles synthétiques Thermogravimétrie Tissés Index. décimale : 667.3 Teinture et impression des tissus Résumé : Sea–island-type, black dope-dyed poly(ethylene terephthalate) microfibre fabrics were compared with normal sea–island-type PET microfibres in terms of their thermal properties, alkaline weight reduction, and dyeing properties. A comparison of the weight reduction behaviours of the two microfibre yarns revealed that the microfibre yarn containing carbon black exhibited a higher dissolution speed than that containing no carbon black. The incorporation of carbon black particles in the polyester fibre matrix therefore accelerates the degradation of the less crystalline sea component during alkali treatment. A cationic dye staining method was used to monitor the alkaline dissolution behaviour of the sea–island-type PET microfibres, and compared with the K/S values and the colour difference, the fk value is the most-desirable indicator for determination of the termination point of the alkaline dissolution process. The colour strength and the colour fastness of the dope-dyed sea–island-type PET microfibre fabrics are superior to those of the normal type. Note de contenu : - EXPERIMENTAL : Materials - Differential scanning calorimetry - Thermogravimetric analysis - Scanning electron microscopy - Alkaline dissolution - Alkaline dissolution monitoring by a cationic dye staining method - Disperse dyeing - Colour fastness testing - RESULTS AND DISCUSSION : Differential scanning calorimetry - Thermogravimetric analysis - Alkaline dissolution monitoring of circular-knitted microfibre fabrics - Alkaline dissolution monitoring of woven microfibre fabrics - Dyeing properties of woven microfibre fabrics DOI : 10.1111/cote.12269 En ligne : https://drive.google.com/file/d/1kvYgEgTRPJg_Ioa_Ggru7gO3zDk7TBcq/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28645 [article]

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An experimental study on dyeing of needle-punched polyethylene-terephthalate non-wovens / Muhammad Tauseef Khawar in COLORATION TECHNOLOGY, Vol. 137, N° 4 (12/07/2021)  

[article]  inCOLORATION TECHNOLOGY > Vol. 137, N° 4 (12/07/2021) . - p. 368-375 Titre : An experimental study on dyeing of needle-punched polyethylene-terephthalate non-wovens Type de document : texte imprimé Auteurs : Muhammad Tauseef Khawar, Auteur ; Muhammad Tausif, Auteur ; Munir Ashraf, Auteur ; Faheem Ahmad, Auteur ; Sheraz Ahmad, Auteur ; Farooq Azam, Auteur ; Mehran Khattak, Auteur Année de publication : 2021 Article en page(s) : p. 368-375 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Nontissés Nontissés -- Propriétés mécaniques Perméabilité Plan d'expérience Polyéthylène téréphtalate Teinture -- Fibres textiles synthétiques Index. décimale : 667.3 Teinture et impression des tissus Résumé : The dyeing of non-wovens in fabric form is of interest for a range of applications especially aesthetics. In this work, needle-punched non-woven fabrics were prepared by employing polyethylene-terephthalate (PET) fibres of two different linear density and same mean fibre length in four different fibre linear density ratios and three different fabric mass areal densities, while keeping all other process and material variables constant. The objectives of the study were to find out the saturation point in the dyeing profile of needle-punched non-wovens by varying aforementioned process variables and, for the first time, compare different industrially relevant conventional fabric dyeing methods (Jet, Package and Jigger dyeing) in terms of physical, mechanical and colour fastness properties. In case of Jet and Package dyeing, non-woven fabric was successfully dyed without any structural reorientation while fabric sample deformation is reported in Jigger dyeing process. Furthermore, tensile strength (in newtons) of samples was increased, while air permeability (in mm/s) was decreased due to the slight compactness of structure after the dyeing process. Note de contenu : - MATERIALS AND METHODS : Non-woven fabrics samples - Preparation of non-woven fabric for dyeing - Testing - RESULTS AND DISCUSSION : Preliminary work - Effect of linear density of PET fibres in non-woven on K/S - Effect of mass areal density of non-wovens on K/S - Comparison of dyeing methods - Table 1 : Polyethylene-terephthalate (PET) fibre properties - Table 2 : Prepared non-woven sample details - Table 3 : Experimental design for the selection of best dyeing method DOI : https://doi.org/10.1111/cote.12533 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12533 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36101 [article]

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An investigation of process parameters on colour during the dyeing of polyester in supercritical carbon dioxide media / Idil Yigit in COLORATION TECHNOLOGY, Vol. 137, N° 6 (12/2021)  

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Application issue of anthraquinonoid vat dyes on inherently flame-resistant fabrics / Martinia Glogar in COLORATION TECHNOLOGY, Vol. 139, N° 2 (04/2023)  

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Carrier dyeing of polyphenylene sulphide fabric with disperse dye in COLORATION TECHNOLOGY, Vol. 129, N° 1 (02/2013)  

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Characterisation of novel regenerated cellulosic, viscose, and cotton fibres and the dyeing properties of fabrics / Taina Kamppuri in COLORATION TECHNOLOGY, Vol. 131, N° 5 (10/2015)  

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Characterisation of sol-gel-based hybrid silicon dioxide/heteroarylthiazole dyes on polyamide fabric / Ming-Shien Yen in COLORATION TECHNOLOGY, Vol. 128, N° 4 (2012)  

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Coloration of cellulose nanofibres with pigments / Shamshad Ali in COLORATION TECHNOLOGY, Vol. 136, N° 5 (10/2020)  

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Coloration properties and clearability of phthalimide-derived monoazo disperse dyes containing ester groups / Jae-Hong Choi in COLORATION TECHNOLOGY, Vol. 129, N° 5 (10/2013)  

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Comment éviter les barrures ? / L. Razafimahefa in L'INDUSTRIE TEXTILE, N° 1370-1371 (05-06/2005)  

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Compounding fibre grade polyethylene terephthalate with a hyperbranched additive and studying its dyeability with a disperse dye / Marziyeh Khatibzadeh in COLORATION TECHNOLOGY, Vol. 126, N° 5 (2011)  

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Consistency issues in hair spectral reflectance and colour measurements in COLORATION TECHNOLOGY, Vol. 136, N° 3 (06/2020)  

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Controlling fibrillation – experiences of the dyeing and finishing of lyocell fibres / Jim Taylor in COLORATION TECHNOLOGY, Vol. 131, N° 6 (12/2015)  

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Correlation between the shade of an azo disperse dye on poly(ethylene terephthalate) and poly(lactic acid) fibres with its spectroscopic properties in selected organic solvents / Jantip Suesat in COLORATION TECHNOLOGY, Vol. 127, N° 4 (2011)

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Coupling coloration of meta-aramid fabric utilising diazonium salts from weakly basic aromatic amines / Hua Jiang in COLORATION TECHNOLOGY, Vol. 140, N° 1 (02/2024)  

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Deep-coloured polyester/cotton blends with low concentrations of polymethylol dyes by a one-pass continuous dyeing process in COLORATION TECHNOLOGY, Vol. 131, N° 3 (06/2015)  

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Degradation studies of CI Reactive Blue 19 on biodegraded cellulosic fabrics via liquid chromatography-photodiode array detection coupled to high resolution mass spectrometry / Nadia Sultana in COLORATION TECHNOLOGY, Vol. 135, N° 6 (12/2019)  

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