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

[article]  inCOLORATION TECHNOLOGY > Vol. 139, N° 2 (04/2023) . - p. 190-199 Titre : Application issue of anthraquinonoid vat dyes on inherently flame-resistant fabrics Type de document : texte imprimé Auteurs : Martinia Glogar, Auteur ; Tanja Pusic, Auteur ; Veronika Lovreskov, Auteur ; Tea Kaurin, Auteur ; Ana Sutlovic, Auteur Année de publication : 2023 Article en page(s) : p. 190-199 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anthraquinone Fibre aramide Ignifugeants Composé chimique utilisé pour réduire l'inflammabilité. Il peut être incorporé au produit durant sa fabrication ou appliqué ultérieurement à sa surface. Indice limite d'oxygène L'indice limite d'oxygène (ILO), ou indice d'oxygène (limite) (IO(L)) ou (L)OI (limiting) oxygen index en anglais), est une grandeur et un essai de laboratoire à petite échelle permettant de caractériser la combustibilité (inflammabilité) d'un matériau combustible, notamment une matière plastique (ou un polymère). Ce critère donne une indication relative de la combustibilité dans des conditions d'essai spécifiées, définies par des normes. Il existe différentes normes selon les domaines d'application1 et les pays : ISO 4589, ASTM D2863, UL 94, etc. Il ne faut pas confondre cette propriété avec la concentration limite en oxygène qui donne la concentration minimale en oxygène dans un mélange avec un combustible permettant l'inflammation en présence d'une source d'ignition. Solidité de la couleur Teinture -- Fibres textiles synthétiques Textiles et tissus -- Analyse Textiles et tissus -- Propriétés tactiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : The vat dyeing process of specific fabrics with protective, inherently fire retardant properties that have a high content of aramid fibres in their composition, is presented. The research was performed on fabric samples that differ in raw material composition and aramid content. The samples were dyed in raw form (group 1) as well as after pretreatment with alkaline scouring (group 2). Measured limiting oxygen index (LOI) values showed that the selected fabrics meet the properties of inherently fire retardant fabrics. Dyeing was performed with Indanthren® Olive Green HB (manufactured by DyStar) vat dye, in exhaustion process, with a bath ratio of 1:30. The dye concentration was 3%, and sodium-hydrosulphite (Na2S2O4) was used as a reducing agent. The colouristic analyses were performed based on spectrophotometric measurement and results interpretation according to CIELab system. The evaluation of primary tactile properties was performed which show an increase of smoothness and softness after scouring and dyeing. Also, wash fastness as well as light fastness tests have shown satisfactory fastness properties. Note de contenu : - Limiting oxygen index (LOI) - Dyeing - Colour fastness and tactile properties testing - Spectrophotometric measurement - Microscopic imaging - Table 1 : Composition of analysed fabrics - Table 2 : Constructional and mechanical characteristics of fabrics - Table 3 : Recipe and conditions of alkaline scouring - Table 4 : Limiting oxygen index (LOI) of fabrics - Table 5 : Primary tactile properties of dyed fabrics - Table 6 : Colour strength (K/S) values of dyed samples DOI : https://doi.org/10.1111/cote.12661 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12661 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39531 [article]

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Optimisation of process parameters of Alpaca wool printing with Juglans regia natural dye / Martinia Glogar in COLORATION TECHNOLOGY, Vol. 136, N° 2 (04/2020)

[article]  inCOLORATION TECHNOLOGY > Vol. 136, N° 2 (04/2020) . - p. 188-201 Titre : Optimisation of process parameters of Alpaca wool printing with Juglans regia natural dye Type de document : texte imprimé Auteurs : Martinia Glogar, Auteur ; Josipa Tancik, Auteur ; Iva Briek, Auteur ; Ana Sutlovic, Auteur ; Marijana Tkalec, Auteur Année de publication : 2020 Article en page(s) : p. 188-201 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alpaga Analyse spectrale Colorants végétaux Epaississants Essais dynamiques Extraction (chimie) Impression sur étoffes Laine Microscopie Mordançage (teinture) Pâtes d'impression Photostabilité Résistance à l'abrasion Résistance au lavage Rhéologie Sérigraphie Solidité de la couleur Sulfate de fer Textiles et tissus -- Propriétés mécaniques Textiles et tissus imprimés Index. décimale : 667.3 Teinture et impression des tissus Résumé : The aim of this research study was to optimise the process parameters of Alpaca wool hand‐knitted samples screen‐printing with Juglans regia natural dye and to set the optimal conditions regarding colour yield, colour fastness and colouristic properties of printed samples. An extensive preliminary examination of the Alpaca woollen yarn and hand‐knitted samples characteristics, the characteristics of suitable thickeners and the optimisation of the printing paste composition, was performed. A starch‐based thickener, British Gum, with a dry matter content of 4% was selected due to its rheological properties responding to properties of the Alpaca yarn and knitwear. It was determined that the fluidity increases while the viscosity and the elasticity decrease in acidic pH, so a pH of 4 was set for the thickener preparation. The thickener of lower viscosity and higher fluidity assures easier pressing of printing paste through the screen, giving uniform colour yield on the substrate, contributing to easier absorption of dyes into the fibre. A 45‐minute fixing process at 105°C by steaming delivered the best results of printing quality. Iron sulphate was used as the mordanting agent. The colour fastness to washing, dry and wet rubbing, and to light, was tested for samples with and without mordanting. The highest light and washing fastness were obtained with the iron sulphate mordanting agent printed in acid (pH 4) with paste containing 4% dry matter‐based thickener. The rubbing fastness was satisfactory for samples with iron sulphate printed with paste containing 4% dry matter thickener, fixed for 45 minutes, regardless of the pH. Note de contenu : - EXPERIMENTAL : Materials - Mechanical and physical yarn and knitwear properties - Dyestuff extraction - Identification of colouring compound - Thickener selection and rheological properties analyses printing paste preparation - Printing, fixing and washing - Microscopic and spectrophotometric analyses - Colour fastness - RESULTS AND DISCUSSION : Mechanical and physical yarn and knitwear properties - Thickener rheological properties analyses - FTIR and UV-VIS spectroscopy analysis - Printing and printed samples analysis DOI : https://doi.org/10.1111/cote.12462 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34238 [article]

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Oxygen plasma pretreatment improves dyeing and antimicrobial properties of wool fabric dyed with natural extract from pomegranate peel / Jelena Peran in COLORATION TECHNOLOGY, Vol. 136, N° 2 (04/2020)

[article]  inCOLORATION TECHNOLOGY > Vol. 136, N° 2 (04/2020) . - p. 177-187 Titre : Oxygen plasma pretreatment improves dyeing and antimicrobial properties of wool fabric dyed with natural extract from pomegranate peel Type de document : texte imprimé Auteurs : Jelena Peran, Auteur ; Sanja Ercegovic Razic, Auteur ; Ana Sutlovic, Auteur ; Tomislav Ivankovic, Auteur ; Martinia Ira Glogar, Auteur Année de publication : 2020 Article en page(s) : p. 177-187 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antimicrobiens Caractérisation Colorimétrie Essais dynamiques Extraits de plantes Fibres textiles -- Propriétés mécaniques Grenade (fruit) et constituants Hydrophilie Laine Mordançage (teinture) Nitrate d'argent Résistance à la traction Résistance au lavage Solidité de la couleur Sulfate d'aluminium Sulfate de potassium Technique des plasmas Teinture -- Fibres textiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : This paper presents the application of conventional potassium aluminium sulphate wool mordanting and a biochemical method with silver nitrate (as antimicrobial agent and mordant), alone and in combination with oxygen plasma, as part of comprehensive research into pretreatment processes for wool dyeing with natural extract from pomegranate peel (Punica granatum L.) . Pretreatment with oxygen plasma significantly improved the hydrophilicity and tensile strength of all tested samples and showed that oxygen plasma can improve K/S , washing fastness, and even replace certain mordants in wool dyeing with natural pomegranate dye. All dyed samples exhibited good antibacterial activity against Staphylococcus aureus , which can be contributed to the phenol content in pomegranate dye. Only after 28 days of intensive ageing in natural weathering conditions did K/S and antibacterial activity against Klebsiella pneumoniae slightly decrease in dyed samples pretreated with oxygen plasma. Note de contenu : - EXPERIMENTAL : Materials and methods - Plasma treatment - Dyeing procedure - Surface morphology - Wicking properties - Tensile strength characterisation - Colorimetric measurements - Colour fastness - Antibacterial activity - RESULTS AND DISCUSSION : FE-SEM analysis - Wicking properties - Tensile strength - Colour properties - Colour fastness - Antibacterial activity of treated samples DOI : https://doi.org/10.1111/cote.12464 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34237 [article]

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