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Interaction of N-methylformanilide with high-performance polyimide fibre and its effect on dyeing / Dongyan Shao in COLORATION TECHNOLOGY, Vol. 138, N° 4 (08/2022)
[article]
Titre : Interaction of N-methylformanilide with high-performance polyimide fibre and its effect on dyeing Type de document : texte imprimé Auteurs : Dongyan Shao, Auteur ; Jinmei Du, Auteur ; Changhai Xu, Auteur ; Hongbo Wang, Auteur Année de publication : 2022 Article en page(s) : p. 407-416 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
N-méthylformanilide
Polyimides
Teinture -- Fibres textiles synthétiques
Traitement thermiqueIndex. décimale : 667.3 Teinture et impression des tissus Résumé : High-performance polyimide fibre is well known for its outstanding thermal stability, fire resistance and chemical stability, and it has great potential for use in fire-protective textiles. One major drawback of polyimide fibre is that it is difficult to dye under regular conditions. In this work, it was found that polyimide fibre could be dyed with disperse dyes with the assistance of N-methylformanilide. Thus, it was proposed that there might exist an interaction between polyimide fibre and N-methylformanilide that plays an important role in dyeing. Experimental results showed that N-methylformanilide penetrated into polyimide fibre, resulting in a slight swell in diameter and decrease in the breaking strength of polyimide fibre. X-ray diffractometric data showed no apparent solvent-introduced increase on the crystallinity of polyimide fibres but an orderly change on the interplanar spacing. When N-methylformanilide was removed from polyimide fibre by thermal treatment, the diameter, breaking strength and interplanar spacing of the polyimide fibres were all recovered to some extent. This indicated that the interactions between polyimide macromolecular chains were broken because of the penetration of N-methylformanilide, and new interactions occurred between polyimide macromolecular chains and N-methylformanilide that played a role in lubricating dye molecules to diffuse into polyimide fibres. Note de contenu : - MATERIALS AND METHODS : Materials - Dyeing of PI fibres - PI fibres treated with MFA - Thermal treatment of PI fibres - Characterisation
- RESULTS AND DISCUSSION : Dyeing properties of PI fibres with MFA - Effect of MFA on PI fibre - Thermal treatment of MFA-treated PI fibre - Swelling mechanism
- Table 1 : Parameters of XRD patterns of PI fibresDOI : https://doi.org/10.1111/cote.12602 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12602 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37893
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Code-barres Cote Support Localisation Section Disponibilité 23520 - Périodique Bibliothèque principale Documentaires Disponible Investigation of alkaline hydrolysis of phthalimide-based azo dye and its application to after-treatment optimisation for high-fasntess dyeing of polyesters in COLORATION TECHNOLOGY, Vol. 134, N° 3 (06/2018)
[article]
Titre : Investigation of alkaline hydrolysis of phthalimide-based azo dye and its application to after-treatment optimisation for high-fasntess dyeing of polyesters Type de document : texte imprimé Année de publication : 2018 Article en page(s) : p. 206-213 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants azoïques
Hydrolyse
PhtalimideLe phtalimide est un imide aromatique, c'est-à -dire un composé organique avec deux groupements carbonyle liés à un atome d'azote trigonal. C'est l'imide de l'acide benzène-1,2-dicarboxylique (acide phtalique).
Propriétés : Le phtalimide est un solide blanc cristallisé à température ambiante. Il est pratiquement insoluble dans l'eau froide, très peu soluble dans le benzène et l'éther de pétrole, et assez soluble dans l'éthanol chaud, l'acide éthanoïque et les bases concentrées.
Obtention : Le phtalimide est obtenu par réaction à chaud de l'anhydride phtalique avec l'ammoniac en solution aqueuse.
Polyesters
Teinture -- Fibres textiles synthétiquesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : 4‐Amino‐N‐methylphthalimide was prepared from phthalimide for use as a diazo component and was coupled with N,N‐Diethylaniline to produce a phthalimide‐derived monoazo disperse dye. The pseudo first‐order kinetics were confirmed by analyzing the dye hydrolysis under alkaline conditions using high performance liquid chromatography, and the optimal dyeing pH and alkali‐clearing conditions were proposed. The synthesised phthalimidyl disperse dyes exhibited excellent colour fastness with a mild alkaline after‐treatment instead of reduction clearing which results in a high biological oxygen demand and pH in conventional disperse dyeing wastewater. Note de contenu : - EXPERIMENTAL : Materials - Instrumental analysis - Synthesis of the dye intermediates - Synthesis of dyes - Formualtion of dye - Alkaline hydrolysis kinetics - Determination of optimal dyeing pH - Dyeing procedure - colour fastness test
- RESULTS AND DISCUSSION : Alkaline hydrolysis kinetics - Determination of optimal dyeing pH - Colour fastness propertiesDOI : 10.1111/cote.12335 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12335 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30644
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Code-barres Cote Support Localisation Section Disponibilité 19954 - Périodique Bibliothèque principale Documentaires Disponible Investigation of the effect of laser technology on the colouring and patterning possibilities in polyacrylonitrile socks / Riza Atav in COLORATION TECHNOLOGY, Vol. 138, N° 4 (08/2022)
[article]
Titre : Investigation of the effect of laser technology on the colouring and patterning possibilities in polyacrylonitrile socks Type de document : texte imprimé Auteurs : Riza Atav, Auteur ; Sevda Köksal Daban, Auteur ; Erdogan Cetin, Auteur Année de publication : 2022 Article en page(s) : p. 368-377 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Chaussettes
Lasers -- Applications industrielles
Polyacrylonitrile
Résistance chimique
Rouge (couleur)
Teinture -- Fibres textiles synthétiquesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : The aim of the current study was to determine the effect of laser treatment on basic dye uptake and the fastness values of acrylic socks. To achieve this, laser treatments were applied to acrylic socks at different resolutions (10, 20 and 30 dpi) over various pixel times (80, 100 and 120 µs) before dyeing. To support the findings obtained, tests and analyses, such as Yellowness Index, Fourier Transform–infrared analysis, scanning electron microscopy, scanning electron microscopy with energy dispersive X-ray spectroscopy, and bursting strength, were also applied to untreated and treated fabric samples. It was found that treatment with laser did not have a significant effect on the basic dye uptake of fibres; nevertheless, the samples treated with laser were dyed slightly lighter than the untreated sample. Furthermore, it was determined that the samples treated at 30 dpi started to melt and the fabric was damaged considerably, but the fabrics treated at 10 and 20 dpi were not affected at all. Another result obtained regarding the use of laser technology in acrylic socks is that if some areas of acrylic socks are not treated with laser, while some other areas are treated with laser at 20 dpi for 100 µs, it is possible to obtain patterns containing two different shades of the same colour on the socks. Note de contenu : - MATERIALS AND METHODS : Effect of laser treatment on the dyeability of polyacrylonitrile socks with basic dyes - Obtaining patterns on basic dyed polyacrylonitrile socks with laser - Tests and analysis
- RESULTS AND DISCUSSION : Results regarding the effect of laser treatment on the dyeability of polyacrylonitrile socks with basic dyes - Results related to obtaining patterns on basic dyed polyacrylonitrile socks with laser
- Table 1 : Factors and levels used in laser treatments
- Table 2 : Yellowness Index values of laser-treated fabric samples
- Table 3 : Scanning electron microscopy photographs of untreated and laser-treated polyacrylonitrile samples
- Table 4 : Scanning electron microscopy with energy dispersive X-ray spectroscopy results of untreated and laser-treated acrylic fibres
- Table 5 : Analysis of variance results for K/S obtained as a result of dyeing untreated and laser-treated fabric samples with Astrazon Red FBL dye
- Table 6 : Washing and rubbing fastness values of untreated and laser-treated fabric samples dyed with Astrazon Red FBL
- Table 7 : Acidic and alkali perspiration fastness values of untreated and laser-treated fabric samples dyed with Astrazon Red FBLDOI : https://doi.org/10.1111/cote.12596 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12596 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37889
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Code-barres Cote Support Localisation Section Disponibilité 23520 - Périodique Bibliothèque principale Documentaires Disponible Laccase-catalysed coloration of wool and nylon / Chetna D. Prajapati in COLORATION TECHNOLOGY, Vol. 134, N° 6 (12/2018)
[article]
Titre : Laccase-catalysed coloration of wool and nylon Type de document : texte imprimé Auteurs : Chetna D. Prajapati, Auteur ; Edward Smith, Auteur ; Faith Kane, Auteur ; Jinsong Shen, Auteur Année de publication : 2018 Article en page(s) : p. 423-439 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Catalyse enzymatique
Colorimétrie
Composés aromatiques
CotonLe 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).
Polyamide 66
Solidité de la couleur
Teinture -- Fibres textiles
Teinture -- Fibres textiles synthétiquesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : The potential for laccase (EC 1.10.3.2) to be used within the area of textile coloration, specifically for the generation of decorative surface pattern design, remains relatively unexplored. The current study presents a novel process for the coloration of wool and nylon 6,6 fibres via laccase oxidation of aromatic compounds as an alternative to conventional dyeing methods. Emphasis was placed on producing a diverse colour palette, which was achieved through the investigation of three different aromatic compounds as laccase substrates : 1,4-dihydroxybenzene, 2,7-dihydroxynapthalene and 2,5-diaminobenzenesulphonic acid. Reaction processing parameters such as buffer systems and pH values, laccase and aromatic compounds concentration, and reaction times were investigated, all in the absence of additional chemical auxiliaries. Enzymatically dyed fabrics were tested against commercial standards, resulting in reasonably good colour fastness to wash. To demonstrate the coloration and design potential by laccase catalysation of aromatic compounds, specially constructed fabrics using a combination of undyed wool, nylon and polyester yarns were dyed using the one-step laccase-catalysed coloration process. The use of different fibre types and weave structures enabled simple colour variations to be produced. Shadow, reserve and contrasting effects were achieved with the laccase-catalysed dyeing process developed. Important advantages over conventional processing methods include the use of simpler and milder processing conditions that eliminate additional chemical use and reduce energy consumption. Note de contenu : - EXPERIMENTAL : Materials - Fabric preparation - Enzymatic dyeing (one-step in-situ dyeing process) - Colour measurement of dyed fabrics - Colour analysis of enzyme treatment liquor - Colour fastness of enzyme-dyed fabrics
- RESULTS AND DISCUSSION : Effect of pH and buffer systems on the activity of laccase towards aromatic compounds and the coloration of fibres - Analysis of laccase-catalysed colour in enzyme treatment liquors without fabrics - Effect of aromatic compound concentration - Effects of treatment time - Colour fastness - Effect of the amino groups of fibres on laccase-catalysed coloration - Design potentialDOI : 10.1111/cote.12350 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12350 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31369
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Code-barres Cote Support Localisation Section Disponibilité 20430 - Périodique Bibliothèque principale Documentaires Disponible Low-temperature dyeing of meta-aramid fabrics pretreated with 2-phenoxyethanol / Dan Sheng in COLORATION TECHNOLOGY, Vol. 133, N° 4 (08/2017)
[article]
Titre : Low-temperature dyeing of meta-aramid fabrics pretreated with 2-phenoxyethanol Type de document : texte imprimé Auteurs : Dan Sheng, Auteur ; Yunli Wang, Auteur ; Xin Wang, Auteur ; Xuefeng Lu, Auteur ; Jiang Shan, Auteur ; Heng Pan, Auteur ; Genyang Cao, Auteur ; Weilin Xu, Auteur Année de publication : 2017 Article en page(s) : p. 320-324 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse thermique
Basses températures
Fibre aramide
Fourier, Spectroscopie infrarouge à transformée de
Phénoxyéthanol
Teinture -- Fibres textiles synthétiquesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : In this study, meta-aramid fibres were pretreated with 2-phenoxyethanol under different conditions to investigate the effect of 2-phenoxyethanol on the dyeing of aramid at low temperature (95 °C). Structural alteration of the pretreated fibres was reflected by thermogravimetry and Fourier transform infrared spectroscopy, indicating more H-bonds, lower crystallinity, and slightly lower thermal stability. The change in structure showed that 2-phenoxyethanol combined with the fibre macromolecules and resulted in swelling of the fibre. Creation of a biphasic system through the addition of 2-phenoxyethanol to the dyeing solution resulted in the cationic dye being partitioned more towards the 2-phenoxyethanol-rich phase than the aqueous phase. The cross-sections of the dyed fibre suggested that the meta-aramid fibre could be dyed more thoroughly with an appropriate concentration of 2-phenoxyethanol. The colour value of aramid fabric was tested by varying the concentration of 2-phenoxyethanol and the temperature of pretreatment, indicating a dramatic improvement in dyeing performance to aramid after 2-phenoxyethanol pretreatment. 2-Phenoxyethanol pretreatment and low-temperature dyeing can overcome the problems of chemical and energy waste while producing a satisfying colour. Note de contenu : - EXPERIMENTAL : Materials - Preparation - Pretreatment - Dyeing - Measurements and characterisations
- RESULTS AND DISCUSSION : Thermal analysis - FTIR analysis - Partitionning of dye in a 2-phenoxyethanol-water biphasic mixture - Dye diffusivity - Effect of experimental parametersDOI : 10.1111/cote.12283 En ligne : https://drive.google.com/file/d/160xmjrbmkre8FwTq-Z4EjsOKGP65u2vo/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28885
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