Colour and gloss properties of pigment-printed synthetic leather using an ultraviolet-curable water-borne polyurethane acrylate binder and two photoinitiators at different ratios / Gülçin Baysal in COLORATION TECHNOLOGY, Vol. 135, N° 2 (04/2019)  

[article]  inCOLORATION TECHNOLOGY > Vol. 135, N° 2 (04/2019) . - p. 133-142 Titre : Colour and gloss properties of pigment-printed synthetic leather using an ultraviolet-curable water-borne polyurethane acrylate binder and two photoinitiators at different ratios Type de document : texte imprimé Auteurs : Gülçin Baysal, Auteur ; Berdan Kalav, Auteur ; Burcak Karaguzel Kayaoglu, Auteur Année de publication : 2019 Article en page(s) : p. 133-142 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Brillance (optique) Colorimétrie Copolymère uréthane acrylate Copolymères en émulsion Cuir synthétique imprimé Fourier, Spectroscopie infrarouge à transformée de Liants Photoamorceurs (chimie) Pigments Rayonnement ultraviolet Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : This study reports on the colour and gloss properties of pigment-printed polyurethane-based synthetic leather using an ultraviolet (UV)-curable water-borne polyurethane acrylate binder and two types of photoinitiators (Omnirad 819 DW and Omnirad 500) at different ratios. The UV curing of printed synthetic leather samples was conducted with gallium and mercury lamps, either singly or in combination, at three different power levels. Chemical changes in the cured films because of the polymerisation of the UV-curing process were analysed by Fourier Transform-infrared spectroscopy, which showed that the polymerisation reaction occurred after UV curing in both the clear and in the pigmented films. The Omnirad 500 photoinitiator is more effective in surface curing and the Omnirad 819 DW photoinitiator is more effective in deep curing. The Omnirad 500 photoinitiator caused the gloss values to drop significantly, especially in the formulation including both photoinitiators, Omnirad 819 DW and Omnirad 500, at a 1:2 ratio, respectively. In the formulation including a higher ratio of the Omnirad 819 DW photoinitiator, higher gloss values were obtained compared with the formulation including a higher ratio of the Omnirad 500 photoinitiator. Considering all the results, the highest gloss value of 20.96 was obtained with samples printed with the formulation of the two photoinitiators at an equal ratio (1:1) cured under a gallium/mercury lamp combination at a power level of 90 W/cm. Moreover, the highest K/S value of 10.86 was obtained with samples printed with the formulation of the two photoinitiators at an equal ratio cured under the gallium lamp at 90 W/cm. Note de contenu : - EXPERIMENTAL : Materials - Methods - RESULTS AND DISCUSSION : UV curing and Fourier Transform-Infrared spectroscopy - Gloss measurements - Colour measurements DOI : 10.1111/cote.12386 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12386 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32327 [article]

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Effect of pigment colour on the printing performance of synthetic leather using a ultraviolet-curable water-borne polyurethane acrylate binder / Gülçin Baysal in COLORATION TECHNOLOGY, Vol. 135, N° 4 (08/2019)  

[article]  inCOLORATION TECHNOLOGY > Vol. 135, N° 4 (08/2019) . - p. 283-291 Titre : Effect of pigment colour on the printing performance of synthetic leather using a ultraviolet-curable water-borne polyurethane acrylate binder Type de document : texte imprimé Auteurs : Gülçin Baysal, Auteur ; Berdan Kalav, Auteur ; Burcak Karaguzel Kayaoglu, Auteur Année de publication : 2019 Article en page(s) : p. 283-291 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Brillance (optique) -- Mesure Colorimétrie Copolymère uréthane acrylate Cuir synthétique imprimé Encre en phase aqueuse Essai de dureté Impression jet d'encre Liants en phase aqueuse Photoamorceurs (chimie) Résistance à l'abrasion Résistance au chocs Index. décimale : 667.2 Colorants et pigments Résumé : The effect of pigment colours, cyan (C), magenta (M) and yellow (Y), and a blend of these (CMY blend) on the printing performance of synthetic leather using a ultraviolet (UV)-curable water-borne polyurethane acrylate binder and two types of photoinitiators was investigated. The curing process was carried out at different radiation doses using gallium and mercury UV lamps in combination. The performance of the prints was evaluated with abrasion resistance, crock fastness, gloss and hardness values and K/S. Chemical changes in the cured film structures due to UV curing were analysed by Fourier Transform–infrared spectroscopy measurements. The highest hardness values for clear and pigmented cured films were obtained with a gallium and mercury lamp combination at the highest energy density (1529 mJ/cm2). The highest K/S was obtained for the sample printed with the formulation including the C pigment and cured under a gallium and mercury lamp combination at low energy density (398 mJ/cm2). The M‐pigmented film displayed the highest hardness and abrasion resistance, whereas lower values were obtained with films pigmented with Y and C, and CMY blend, successively. The highest dry and wet crock values were obtained with the formulation including the M pigment. CMY-pigmented film showed the highest gloss values at all energy densities. The pigment colour affected the curing degree of printed films due to the different absorption/transmission intervals of each colour in the UV spectrum. Note de contenu : - EXPERIMENTAL : Materials - Methods - RESULTS AND DISCUSSION : UV curing and pendulum hardness measurements - FTIR - Colour measurements - Gloss measurements - Crock fastness - Abrasion resistance DOI : 10.1111/cote.12402 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12402 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32831 [article]

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Improving hydrophobicity on polyurethane-based synthetic leather through plasma polymerization for easy care effect / Burcak Karaguzel Kayaoglu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 4 (07/2013)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 10, N° 4 (07/2013) . - p. 549-588 Titre : Improving hydrophobicity on polyurethane-based synthetic leather through plasma polymerization for easy care effect Type de document : texte imprimé Auteurs : Burcak Karaguzel Kayaoglu, Auteur ; Emre Ozturk, Auteur ; F. Seniha Güner, Auteur ; Tamer Uyar, Auteur Année de publication : 2013 Article en page(s) : p. 549-588 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Angle de contact Cuir synthétique Hydrophobie Polymérisation sous plasma Polyuréthanes Surfaces -- Nettoyage Index. décimale : 667.9 Revêtements et enduits Résumé : This study reports on the deposition of a hydrophobic coating on polyurethane (PU)-based synthetic leather through a plasma polymerization method and investigates the hydrophobic behavior of the plasma-coated substrate. The silicon compound of hexamethyldisiloxane (HMDSO), inactive gas argon (Ar), and toluene were used to impart surface hydrophobicity to a PU-based substrate. Surface hydrophobicity was analyzed by water contact angle measurements. Surface hydrophobicity was increased by deposition of compositions of 100% HMDSO, 3:1 HMDSO/toluene, and 1:1 HMDSO/toluene. Optimum conditions of 40 W, 30 s plasma treatment resulted in essentially the same initial contact angle results of approximately 100° for all three treatment compositions. The initial water contact angle for untreated material was about 73°. A water droplet took 1800 s to spread out on the plasma-treated sample after it had been placed on the sample surface. An increase in plasma power also led to a decrease in contact angle, which may be attributed to oxidization of HMDSO during plasma deposition. XPS analysis showed that plasma polymerization of HMDSO/toluene compositions led to a significant increase in atomic percentage of Si compound responsible for the hydrophobic surface. The easy clean results for the treated and untreated PU-based synthetic leather samples clearly showed that the remaining stain on the plasma-polymerized sample was less than that of untreated sample. The plasma-formed coating was both hydrophobic and formed a physical barrier against water and stain. Note de contenu : - EXPERIMENTAL : Plasma treatment - Contact angle measurements - Easy clean property - Scanning electron microscopy (SEM) - X-ray photoelectron spectroscopy (XPS) - RESULTS AND DISCUSSION : Water contact angle measurements - Surface roughness - X-ray photoelectron spectroscopy (XPS) DOI : 10.1007/s11998-013-9470-x En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-013-9470-x.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19104 [article]

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Synthesis of core–shell-type styrene acrylic latexes with low NMA content and their application in pigment printing pastes / Mesut Eren in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 1 (01/2018)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 15, N° 1 (01/2018) . - p. 121–129 Titre : Synthesis of core–shell-type styrene acrylic latexes with low NMA content and their application in pigment printing pastes Type de document : texte imprimé Auteurs : Mesut Eren, Auteur ; Gökhan Akbulut, Auteur ; Sanem Senler ; Burcak Karaguzel Kayaoglu Année de publication : 2018 Article en page(s) : p. 121–129 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse thermique Copolymère styrène acrylique Copolymères -- Synthèse Core-Shell Coton Le 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). Fibres polyesters Formaldéhyde Impression sur étoffes Latex Liants Pigments Réduction des composés organiques volatils Résistance à l'abrasion Résistance au lavage Résistance aux frottements humides Taille des particules Index. décimale : 667.9 Revêtements et enduits Résumé : In this paper, novel core–shell polymers comprising styrene (St) and butyl acrylate (BA) in both core and shell layers of the polymer particles have been synthesized and employed in pigment printing pastes which were applied on 100% cotton and 65% cotton/35% polyester (PET) fabrics. The aim was to reduce the NMA content and the formation of free formaldehyde from pigment printing pastes by employing newly synthesized core-/shell-type polymers. After five washing cycles, the synthesized core-/shell-type polymer including 1% NMA in the core and 1% NMA in the shell with T g values +30°C and −20°C, respectively, with lowest total NMA content (1.03%) yielded the best result and showed closest ΔE values to the commercially available polymer including 4% NMA. Dry and wet rubbing fastness results showed no significant changes in the absence of NMA when compared with NMA containing samples. The penetration degree of the pigment pastes of the corresponding polymers was relatively higher on 100% cotton fabric for both red- and blue-colored pigments. A negligible decrease in color strength has been observed for all polymers when colored in red. Note de contenu : - EXPERIMENTAL : Materials - Core/shell latex synthesis - Preparation of the pigment printing pastes - Characterization - Application of pigment printing pastes - Testing of printed fabrics - RESULTS AND DISCUSSION : Characterization of the core/shell latexes - DSC analysis - Particle size of the core/shell binder - The performance of core/shell binders in pigment printing pastes - Dry and wet rubbing fastness and hand feeling of the printed fabrics - Color strength and penetration - Washing fastness DOI : 10.1007/s11998-017-9955-0 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-017-9955-0.pdf Format de la ressource électronique : pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30091 [article]

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The effect of different radiation sources for the UV curing of a screen-printed, water-based polyurethane acrylate binder / Gökhan Akbulut in COLORATION TECHNOLOGY, Vol. 132, N° 4 (08/2016)  

[article]  inCOLORATION TECHNOLOGY > Vol. 132, N° 4 (08/2016) . - p. 270-279 Titre : The effect of different radiation sources for the UV curing of a screen-printed, water-based polyurethane acrylate binder Type de document : texte imprimé Auteurs : Gökhan Akbulut, Auteur ; Burcak Karaguzel Kayaoglu, Auteur ; Mesut Eren, Auteur ; Bülent Yildiz, Auteur ; Murat Orbay, Auteur Année de publication : 2016 Article en page(s) : p. 270-279 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Copolymère uréthane acrylate Dioxyde de titane Impression sur étoffes Liants Pâte pigmentaire Pâtes d'impression Photoamorceurs (chimie) Pigments Rayonnement ultraviolet Rhéologie Sérigraphie Index. décimale : 667.3 Teinture et impression des tissus Résumé : In this paper, titanium-dioxide-pigmented printing pastes of water-borne, UV-curable polyurethane acrylate binder with two different UV-curing photoinitiator combinations were prepared and screen printed on a black t-shirt fabric. The effects of mercury and gallium radiation sources employed either singly or in combination for UV curing and the total energy level on the printing performance were investigated. The cured textile samples were subjected to colour measurements before and after five cycles of washing, and hiding power and changes in chromacity, hue, and colour were determined. Single-lamp applications of mercury and gallium were not satisfactory, and opaque pigment hindered deep curing, especially at thicker coating levels. It was found that employment of a mercury–gallium lamp system applying an irradiation at medium level can provide pigment printing of opaque white inks with excellent coverage, washing resistance, and medium hardness. Note de contenu : - UV-radiation curing and pendulum hardness - Fourier transform infrared spectroscopy - Rheological behaviour of pigment pastes - CIELab colour, coverage, ang gloss measurement of printed fabrics - Photographic images of washed printed samples DOI : 10.1111/cote.12219 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12219 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26729 [article]

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The effect of ultraviolet-curable water-borne polyurethane acrylate binder concentration on the printing performance of synthetic leather / Gülçin Baysal in COLORATION TECHNOLOGY, Vol. 135, N° 2 (04/2019)  

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