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Bioscouring and bleaching of cotton with pectinase enzyme and peracetic acid in one bath / Polonca Presa in COLORATION TECHNOLOGY, Vol. 124, N° 1 (2008)
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Titre : Bioscouring and bleaching of cotton with pectinase enzyme and peracetic acid in one bath Type de document : texte imprimé Auteurs : Polonca Presa, Auteur ; Petra Forte Tavčer, Auteur Année de publication : 2009 Article en page(s) : p. 36-42 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.3 Teinture et impression des tissus Résumé : Acidic and alkaline pectinases have proved efficient for the scouring of cotton. Peracetic acid can be used as an alternative for the bleaching of cotton. As a result of similar conditions of activity, we decided to try to scour and bleach a cotton fabric with both agents simultaneously in a single bath. Prior to performing these experiments, using the viscometric method we proved that pectinases retained their activity in the presence of peracetic acid. We tried to improve the efficiency of the single-bath treatment with the addition of a chelator. Tetrasodium pyrophosphate, which does not deactivate pectinases, has proved an efficient chelator. The analyses of a cotton fabric treated in a single bath with acidic and alkaline pectinases confirmed the efficiency of such treatment. A sufficient quantity of wax and pectin
was removed and, because of that, the absorbance of the treated fabric was improved. The damage to the cotton fibres was negligible and the degree of whiteness obtained was uniform and adequate for further dyeing.DOI : 10.1111/j.1478-4408.2007.00118.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2007.00118.x/pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3137
in COLORATION TECHNOLOGY > Vol. 124, N° 1 (2008) . - p. 36-42[article]Réservation
Réserver ce documentColour constancy of vat prints on cotton fabrics / S. Bracko in COLORATION TECHNOLOGY, Vol. 125, N° 4 (2009)
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Titre : Colour constancy of vat prints on cotton fabrics Type de document : texte imprimé Auteurs : S. Bracko, Auteur ; A. Solar, Auteur ; Petra Forte Tavčer, Auteur ; B. Simoncic, Auteur Année de publication : 2009 Article en page(s) : p. 222-227 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.3 Teinture et impression des tissus Résumé : Colour constancy of prints with vat dyes on cotton fabrics was investigated by computing the CMCCON02 colour inconstancy index with the key element CAT02 for chromatic adaptation transform. The results show that the highest changes in colour appearance can be expected when the average daylight is replaced with fluorescent light. If D65 daylight is replaced with some other type of daylight, such as D50 or D55, only minor colour deviations occur which do not substantially change the colour appearance of the prints. The analysis of the influence of the lightness and chromaticity of prints shows that the chromaticity of the samples significantly affects their colour constancy. The change of appearance of the prints with lower chroma because of changed illumination conditions is less probable. The influence of a dye blend composition was also investigated. On average, multi-coloured dye blends have proved to be more colour constant. DOI : 10.1111/j.1478-4408.2009.00200.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2009.00200.x/pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6215
in COLORATION TECHNOLOGY > Vol. 125, N° 4 (2009) . - p. 222-227[article]Réservation
Réserver ce documentEnhanced PAA bleaching of cotton by incorporating a cationic bleach activator / Pavla Krizman Lavric in COLORATION TECHNOLOGY, Vol. 123, N° 4 (2007)
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Titre : Enhanced PAA bleaching of cotton by incorporating a cationic bleach activator Type de document : texte imprimé Auteurs : Pavla Krizman Lavric, Auteur ; Franci Kovac, Auteur ; Petra Forte Tavčer, Auteur ; Peter Hauser, Auteur ; David Hinks, Auteur Année de publication : 2007 Article en page(s) : p. 230-236 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.3 Teinture et impression des tissus Résumé : Peracetic acid is a well-known alternative to hydrogen peroxide as a bleaching agent for cotton. In this study, a novel cationic bleach activator, N-[4-(triethylammoniomethyl)benzoyl]butyrolactam chloride, was used in combination with peracetic acid to investigate the enhancement of cotton bleaching efficiency. The effects of temperature, pH and concentrations of activator and peracetic acid on the bleaching performance were studied using a statistical design of experiment. Adding activator to a peracetic acid bleaching bath improved the resultant whiteness of the substrate and at optimal conditions produced less fibre damage than when peracetic acid was used alone. In addition, the bleaching performance of both peracetic acid and hydrogen peroxide in the presence of activator was compared. In the absence of activator, the peracetic acid performance was considerably superior to a conventional hydrogen peroxide bleach system in which no bleach activator is present. However, addition of activator to the hydrogen peroxide bath increased the whiteness to a level comparable to peracetic acid. DOI : 10.1111/j.1478-4408.2007.00088.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2007.00088.x/pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3523
in COLORATION TECHNOLOGY > Vol. 123, N° 4 (2007) . - p. 230-236[article]Réservation
Réserver ce documentFragrant finishing of cotton with microcapsules : comparison between printing and impregnation / Barbara Golja in COLORATION TECHNOLOGY, Vol. 129, N° 5 (10/2013)
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Titre : Fragrant finishing of cotton with microcapsules : comparison between printing and impregnation Type de document : texte imprimé Auteurs : Barbara Golja, Auteur ; Boštjan Šumiga, Auteur ; Petra Forte Tavčer, Auteur Année de publication : 2013 Article en page(s) : p. 338-346 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse sensorielle
Antibactériens
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).
Encapsulation
Formaldéhyde
Huiles essentielles
Matériaux -- Imprégnation
MélamineLa mélamine, de nom chimique 1,3,5-triazine-2,4,6-triamine, est parfois dénommée cyanuramide ou cyanurotriamine. Sa formule brute est C3H6N6.
Les "résines mélamine-formaldéhyde" ou "mélamine-formol" (sigle MF) sont appelées "mélamine" dans le langage courant. Elles font partie de la famille des aminoplastes qui regroupe des résines thermodurcissables aminées, issues d'un comonomère tel l'urée ou la mélamine, parfois le thiocarbamide, le cyanamide hydrogène ou le dicyandiamide ; le second comonomère étant le formaldéhyde.
Microscopie électronique à balayage
Parfums
Pâtes d'impression
Photostabilité
Polymérisation
SérigraphieIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Microencapsulated fragrance was used to produce a fragrant textile product. Melamine–formaldehyde polymer wall microcapsules with a lavender, rosemary and sage essential oil core were applied to a cotton fabric in two ways, i.e. byscreen printing and impregnation. The samples were dried and cured, and then the differences between them were analysed. The condition and distribution of applied microcapsules were observed by scanning electron microscopy, fragrance evaluation was performed on printed and impregnated samples after they had been washed several times, and their handle properties were investigated. Moreover, the influence of artificial light on the wall of microcapsules was examined, and possible antibacterial activity against Staphylococcus aureus and Escherichia coli was evaluated. The change in colour of all samples as a consequence of the addition of microcapsules to the paste or bath was checked. The results show that both application techniques are appropriate for the effective fragrant but on the other hand ineffective antibacterial finishing of cotton fabrics. Artificial light did not affect the microcapsules. There is an impact on colour only when the capsules are printed to fabric. Both of the techniques used, printing and impregnation, have advantages as well as drawbacks. Note de contenu : - EXPERIMENTAL : Material - Microcapsule preparation with in situ polymerisation - Printing - Impregnation - Analysis -
- RESULTS AND DISCUSSION : Viscosity of printing pastes and impregnation baths - Scanning electron micrographs - Fragrance evaluation (fastness of fragrance to washing) - Fabric properties - Fastness to artificial light - Antibacterial test - Colour valuesDOI : 10.1111/cote.12044 En ligne : http://onlinelibrary.wiley.com/doi/10.1111/cote.12044/pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19351
in COLORATION TECHNOLOGY > Vol. 129, N° 5 (10/2013) . - p. 338-346[article]Réservation
Réserver ce documentPrinting of antimicrobial microcapsules on textiles / Barbara Ocepek in COLORATION TECHNOLOGY, Vol. 128, N° 2 (2012)
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Titre : Printing of antimicrobial microcapsules on textiles Type de document : texte imprimé Auteurs : Barbara Ocepek, Auteur ; Bojana Boh, Auteur ; Boštjan Šumiga, Auteur ; Petra Forte Tavčer, Auteur Année de publication : 2012 Article en page(s) : p. 95-102 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antimicrobiens
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).
Encapsulation
Formaldéhyde
Impression sur étoffes
Sérigraphie
TriclosanLe triclosan est un composé organochloré, proche des chlorophénols, qui possède des propriétés antifongiques et antibactériennes à large spectre. Il est aussi appelé 5-chloro-2-(2,4-dichlorophénoxy)phénol.Index. décimale : 667.3 Teinture et impression des tissus Résumé : One of the processes for the application of functional compounds that alter textile properties is encapsulation. In our research, a microencapsulated biocide was used to produce an antimicrobial textile product. Melamine–formaldehyde polymer wall microcapsules with a triclosan core were applied to a cotton fabric by screen printing. Printed samples were dried and cured. The fabric hand properties of washed and unwashed samples were tested and the antibacterial activity against Staphylococcus aureus and Escherichia coli was evaluated. The quantity of free formaldehyde on the printed and washed samples was monitored for 2 months. The results show that microcapsules with triclosan can be successfully applied to a cotton fabric by printing, where they provide good antibacterial protection without substantially changing the fabric properties. The quantity of formaldehyde on the unwashed samples is high and it changes with time; however, it significantly decreases with washing. Note de contenu : - EXPERIMENTAL : Material - Preparation of microcapsules by in situ polymerisation - Printing, drying, curing and washing procedure - Analysis
- RESULTS AND DISCUSSION : Antibacterial efficiency - Fabric properties - Free formaldehyde quantity - SEM imagesDOI : 10.1111/j.1478-4408.2011.00349.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2011.00349.x/pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=14881
in COLORATION TECHNOLOGY > Vol. 128, N° 2 (2012) . - p. 95-102[article]Réservation
Réserver ce documentProperties of differently printed and easy-care finished linen fabrics / Petra Forte Tavčer in COLORATION TECHNOLOGY, Vol. 127, N° 3 (2011)
PermalinkProperties of ink-jet printed, ultraviolet-cured pigment prints in comparison with screen-printed, thermo-cured pigment prints / Masenka Mikuz in COLORATION TECHNOLOGY, Vol. 126, N° 5 (2011)
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