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Adjusting UV-assisted rheology / Tobias Sommer in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8 (07-08/2022)
[article]
Titre : Adjusting UV-assisted rheology : Curing process of UV-curable inkjet inks can be improved and thus the migration potential of harmful photoinitiators can be significantly reduced Type de document : texte imprimé Auteurs : Tobias Sommer, Auteur ; Felipe Wolff Fabris, Auteur ; Christopher Giehl, Auteur ; Anton Paar, Auteur Année de publication : 2022 Article en page(s) : p. 42-46 Langues : Anglais (eng) Catégories : Emballages
Encre -- Séchage sous rayonnement ultraviolet
Encre jet d'encre
Granulométrie
Photoamorceurs (chimie)
Photoréticulation
Pigments
RhéologieIndex. décimale : 667.9 Revêtements et enduits Résumé : The development of radiation-curing inkjet inks, such as low-migration inks for the packaging industry, represents a demanding process. At the same time, however, this also increases the need for quality assurance and characterisation methods that are adapted to the actual curing process. UV-assisted rheology has great potential for this. Note de contenu : - Measurement methodology
- A question of formulation
- Curing reaction : particle size
- Curing reaction : pigments
- Curing reaction : initiators
- Curing reaction : irradiation intensityEn ligne : https://drive.google.com/file/d/19GBeTOxKnW5IT6TTTZtiPHrC4e9Xsrrz/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38024
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8 (07-08/2022) . - p. 42-46[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23593 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Closing migration routes : Formulating UV-curable inkjet inks for indirect food contact applications Type de document : texte imprimé Auteurs : Roel De Mondt, Auteur Année de publication : 2013 Article en page(s) : p. 126-131 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Aliments -- Emballages -- Aspect sanitaire
DendrimèresUn dendrimère 1,2est une molécule dont la forme reprend celle des branches d'un arbre. Le nom vient du grec "δενδρον"/dendron, signifiant "arbre". En 1979, le premier dendrimère a été synthétisé par D.A. Tomalia3 et d'autres chercheurs de la Dow Chemical Company, et des dendrimères ont depuis été étudiés partout dans le monde pour leur forme unique.
Dans la synthèse des dendrimères, les monomères mènent à un polymère monodisperse, tel un arbre4. Il y a deux méthodes définies de synthèse des dendrimères: synthèse divergente5,6 et synthèse convergente7. La première assemble la molécule du noyau jusqu'à la périphérie et le second de l'extérieur vers le noyau.
Les propriétés des dendrimères sont engendrées par les structures moléculaires présentes sur sa surface. Par exemple, un dendrimère peut être hydrosoluble quand son extrémité-groupe est un groupe hydrophile, comme un groupe carboxylique. Il est théoriquement possible de concevoir un dendrimère hydrosoluble avec l'hydrophobicité interne, qui lui permettrait de porter un composé hydrophobe dans son intérieur (afin de transporter un composé thérapeutique hydrophobe dans le sang par exemple).
Une autre propriété est que le volume d'un dendrimère augmente quand il a une charge positive. Si cette propriété peut être appliquée, des dendrimères peuvent être employés pour les systèmes de transport d'éléments chimiques qui peuvent donner le médicament à la partie visée à l'intérieur du corps d'un patient directement (tumeur par exemple).
Les applications sont très diverses comme un élément organique électroluminescent, comme substitut sanguin, traitement anti-cancer, outils pour la multiplication de cellules, mais aussi en matériaux lors d'associations avec des nanotubes ou comme sondes sélectives et efficaces.
Encre -- Séchage sous rayonnement ultraviolet
Encre jet d'encre
Formulation (Génie chimique)
Photoamorceurs (chimie)
Produits chimiques -- Migration
Réticulation (polymérisation)Index. décimale : 667.4 Encres Résumé : Demand for UV inkjet printing of packaging is increasing, especially in the food, beverage and pharmaceutical markets where low migration (LM) inks are required. However, inkjet must have very low viscosity, whereas other LM inks are often based on high viscosity materials. The formulation of LM inkjet inks is discussed, using a highly reactive monomer, a dendritic co-initiator and polymerisable photoinitiators. Note de contenu : - Defining the legal migration limites
- Some general principles that must complied with
- What is a low migration ink ?
- Highly reactive monomer shows low migration
- Factors determining photoinitiator selection
- Dendritic co-initiator has low viscosity yet high molecular weight
- Polymerisable photoinitiators further reduce migration
- Spectral considerations in UV curing
- Finding the best way forwardEn ligne : https://drive.google.com/file/d/1wQOsGsFE7Jyqu2I47TpPygNa6eMCqNaU/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17817
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 4 (04/2013) . - p. 126-131[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14818 - Périodique Bibliothèque principale Documentaires Disponible Direct fabrication and morphology of metallic micropatterns by pulsed jet nanoelectrospraying of silver nano-ink / Ke Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 9, N° 3 (05/2012)
[article]
Titre : Direct fabrication and morphology of metallic micropatterns by pulsed jet nanoelectrospraying of silver nano-ink Type de document : texte imprimé Auteurs : Ke Wang, Auteur ; John P. W. Stark, Auteur Année de publication : 2012 Article en page(s) : p. 317-322 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Argent
Electronébulisation
Encapsulation
Encre jet d'encre
Nanoparticules
Nanotechnologie
Surfaces (technologie)Index. décimale : 667.9 Revêtements et enduits Résumé : A pulsed jet nanoelectrospray technique was applied to direct fabrication of silver micropatterns. The deposition of a commercial organic silver nano-ink was performed in a fully voltage-controlled fashion by voltage pulses ranging from 550 to 800 V with variable durations. By using 15 μm nozzles, patterns with 100-μm-sized features were locally freeformed on a silicon substrate with a spraying distance of 250 μm. An energy-dispersive X-ray spectrum confirmed metallic silver was developed in all the patterns after heat treatment at 220°C. The size and microstructural evolution of silver films was observed to strongly depend on the deposition volume and material flow over substrate surface. A good linear relationship between the deposition volume and pulse duration was exhibited over the applied voltage range in the cone-jet mode, demonstrating a drop-on-demand capability. By fitting, the deposition volume rate was estimated to be in the range of 0.38–0.59 pL/ms and was shown to increase with the applied voltage. DOI : 10.1007/s11998-011-9370-x En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-011-9370-x.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15962
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 9, N° 3 (05/2012) . - p. 317-322[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14188 - Périodique Bibliothèque principale Documentaires Disponible Disperse ink-jet inks : properties and application to polyester fibre / Chrysavgi Th. Kosolia in COLORATION TECHNOLOGY, Vol. 127, N° 6 (2011)
[article]
Titre : Disperse ink-jet inks : properties and application to polyester fibre Type de document : texte imprimé Auteurs : Chrysavgi Th. Kosolia, Auteur ; Eforia G. Tsatsaroni, Auteur ; Nikolaos F. Nikolaidis, Auteur Année de publication : 2011 Article en page(s) : p. 357-364 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants azoïques
Dispersions et suspensions
Encre jet d'encre
Microémulsions
Polyesters
Teinture -- Fibres textiles synthétiques
Textiles et tissus imprimésIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Water-based ink-jet inks were prepared using press cake samples of two commercially available azo disperse dyes. The suitability of the inks for printing polyester fabric was evaluated via measurement of surface tension, conductivity, viscosity, pH and particle size distribution. Inks prepared by the proposed method fulfill most requirements for an ink-jet ink depending on the colorant structure, the dispersing agent and the alcohol used. The inks were applied to polyester fabric by both printing and dyeing and the fastness of the ensuing coloured samples was assessed. The fastness properties of the dyed and printed polyester samples were found to be very good to excellent and generally meet accepted customer requirements. Oil-in-water microemulsions containing the same colorants were also prepared. Their properties, which are crucial to the suitability for ink-jet ink, were compared with those of the conventionally prepared inks and were found to be improved, with the exception of conductivity, while surface tension remained within acceptable values. Note de contenu : - EXPERIMENTAL : Materials - Ink formulation- Surface tension, conductivity, viscosity and pH measurements - Particle size distribution - Dyeing - Digital printing - Fastness - Colour measurements - Fourier Transform-infrared (FTIR)
- RESULTS AND DISCUSSION : Microemulsion-based ink-jet inks - Dyeing - PrintingDOI : 10.1111/j.1478-4408.2011.00334.x Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12648
in COLORATION TECHNOLOGY > Vol. 127, N° 6 (2011) . - p. 357-364[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 13476 - Périodique Bibliothèque principale Documentaires Disponible Dye aggregation and interaction of dyes with a water-soluble polymer in ink-jet ink for textiles / Ju-Young Park in COLORATION TECHNOLOGY, Vol. 128, N° 3 (2012)
[article]
Titre : Dye aggregation and interaction of dyes with a water-soluble polymer in ink-jet ink for textiles Type de document : texte imprimé Auteurs : Ju-Young Park, Auteur ; Yuichi Hirata, Auteur ; Kunihiro Hamada, Auteur Année de publication : 2012 Article en page(s) : p. 184-191 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants
Encre jet d'encre
Impression jet d'encre
Polymères hydrosolubles
Polyvinylpyrrolidone
Précipitation (chimie)
Sulfonates
Teinture -- Fibres textilesIndex. décimale : 677 Textiles Résumé : Detailed understanding of the interaction between dyes and additives and the aggregation behaviour of the dye molecules in aqueous solutions is required to develop ink-jet ink for textiles. In the present study, the aggregation behaviour of three acid dyes (CI Acid Red 88, CI Acid Red 13 and CI Acid Red 27) containing different number of sulphonate groups in aqueous solutions was investigated by means of visible absorption spectroscopy. As a result, the higher the solubility of the dyes in water (the larger the number of sulphonate groups in the dyes), the lower are the aggregation constants of the dyes. For all the dyes, the aggregation constants decreased with increasing temperature, indicating the exothermic process of the dye aggregation. The thermodynamic process for CI Acid Red 88 with one sulphonate group is less enthalpic and more entropic than that for CI Acid Red 13, which contains two sulphonate groups. CI Acid Red 27, which includes three sulphonate groups, hardly forms any aggregates. To elucidate the effects of the polymer additive, the binding constants of the dyes with the water-soluble polymer, poly(vinylpyrrolidone) and the aggregation constants of the dyes in aqueous polymer solutions were also estimated. In addition, the binding constants were influenced by the number of sulphonate groups in the acid dyes: the larger number of sulphonate groups diminished the binding constants. The aggregation constants in the presence of poly(vinylpyrrolidone) were smaller than those in its absence at every temperature for all dyes. This suggests that poly(vinylpyrrolidone) has disaggregation effects. Furthermore, poly(vinylpyrrolidone) makes the aggregation process less enthalpic with a greater entropic change. Thus, the aggregation process of the dyes in the polymer solutions is thermodynamically different from that in water, reflecting the interactions between the dyes and the polymer. Note de contenu : - EXPERIMENTAL : Materials - Visible absorption spectrum measurements
- RESULTS AND DISCUSSION : Aggregation of dyes in aqueous solutions - Interaction between dyes and PVP - Aggregation of dyes in the polymer solutionsDOI : 10.1111/j.1478-4408.2012.00370.x Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15118
in COLORATION TECHNOLOGY > Vol. 128, N° 3 (2012) . - p. 184-191[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 13933 - Périodique Bibliothèque principale Documentaires Disponible PermalinkFixation des colorants jet d'encre / Pierre Viallier in L'INDUSTRIE TEXTILE, N° 1331 (05/2001)
PermalinkInfluence of different dispersants on the quality and stability of aqueous quinacridone magenta pigment dispersion for ink-jet applications / Rafal Gaida in COLORATION TECHNOLOGY, Vol. 139, N° 6 (12/2023)
PermalinkInfluence of nano-coated pigment ink formulation on ink-jet printability and printing accuracy / Min Li in COLORATION TECHNOLOGY, Vol. 133, N° 6 (12/2017)
PermalinkInk jet textile printing / Christina Cie / Cambridge [United Kingdom] : Woodhead Publishing Ltd (2015)
PermalinkInkjet printing and surface treatment of an optimized polyurethane-based ink formulation as a suitable insulator over silver for contact with aqueous-based fluids in low-voltage applications / P. Aminayi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 3 (05/2017)
PermalinkInkjet printing : effects of binder particle size and chitosan pretreatment on the qualities of silk fabric / W. Kangwansupamonkon in SURFACE COATINGS INTERNATIONAL, Vol. 94, 6 (12/2011)
PermalinkInkjet technology for digital fabrication / Ian M. Hutchings / London [United Kingdom] : John Wiley & Sons (2013)
PermalinkJet d'encre / Bruno Sueur in L'INDUSTRIE TEXTILE, N° 1331 (05/2001)
PermalinkNew generation inks / Andre Fuchs in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 195, N° 4485 (02/2005)
PermalinkPreparation of pigmented ink-jet ink by a combination of surface treatments and synthetic dispersant / Chun Yoon in COLORATION TECHNOLOGY, Vol. 127, N° 3 (2011)
PermalinkSome properties of a thickener for preparing inkjet printing ink for nylon carpet / Chang E. Zhou in COLORATION TECHNOLOGY, Vol. 133, N° 2 (04/2017)
PermalinkSynthesising polymeric dispersants to apply to carbon black pigmented mill bases for use in ink-jet inks / Chun Yoon ; Jae-Hong Choi in COLORATION TECHNOLOGY, Vol. 136, N° 1 (02/2020)
PermalinkThe critical role of particle size distribution in inkjet ink performance / Anne Virden in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 207, N° 4631 (05/2017)
PermalinkWater based inkjet inks for industrial applications / Andy Hancock in PAINTINDIA, Vol. LXIII, N° 8 (08/2013)
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