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Gas transport properties in waterborne polymer nanocomposite coatings containing organomodified clays / M. Stratigaki in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 6 (11/2014)
[article]
Titre : Gas transport properties in waterborne polymer nanocomposite coatings containing organomodified clays Type de document : texte imprimé Auteurs : M. Stratigaki, Auteur ; G. Choudalakis, Auteur ; A. D. Gotsis, Auteur Année de publication : 2014 Article en page(s) : p. 899-911 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Argile
Diffusion (physique)
Exfoliation
Gaz
Matériaux hybrides
Montmorillonite
Perméabilité
Polyacryliques
Polyuréthanes
Revêtements en phase aqueuse:Peinture en phase aqueuse
SolubilitéIndex. décimale : 667.9 Revêtements et enduits Résumé : Nanostructured composite coatings, consisting of phylosilicates embedded within polymer matrices, were prepared and characterized. Waterborne acrylic and polyurethane resins were employed as matrix, and hydrophilic or organically modified nanoparticles of montmorillonite as reinforcement. Emphasis in this article is put on the preparation of the coating. An overview of the major steps involved is presented. The choice of a suitable solvent for the preparation stage is based on the values of the solubility parameters of the constituents. The characterization techniques that are used include X-ray diffraction analysis, gas permeation measurements, and IR spectroscopy. The results highlight the significance of the selection of appropriate ingredients and the knowledge of the interactions between the clay particles, the organic matrix, and the solvents used for the preparation of the coating. Note de contenu : - Film formation of a waterbone nanocomposite coating
- EXPERIMENTAL : Materials - Sample preparation - Sample characterization
- RESULS AND DISCUSSION : The structure of the nanocomposites - IR analysis - The effect of the clays on CO₂ gas diffusion - The compatibility of suspension media and organomodified claysDOI : 10.1007/s11998-014-9594-7 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-014-9594-7.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22313
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 11, N° 6 (11/2014) . - p. 899-911[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16659 - Périodique Bibliothèque principale Documentaires Disponible Greener manufacturing process for chain stopped alkyd paint / Maryam Amra Jordaan in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 208, N° 4641 (05/2018)
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Titre : Greener manufacturing process for chain stopped alkyd paint Type de document : texte imprimé Auteurs : Maryam Amra Jordaan, Auteur ; Thembeka Samkelisiwe Dlamini, Auteur ; Michael M. Shapi, Auteur Année de publication : 2018 Article en page(s) : p. 16-24 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Argile
Automobiles -- Revêtements:Automobiles -- Peinture
Dispersions et suspensions
Essais (technologie)
Fourier, Spectroscopie infrarouge à transformée de
Polyalkydes
Réflexion totale atténuée
Rhéologie
Solubilité
SurfactantsIndex. décimale : 667.6 Peintures Résumé : The current process of CSAP manufacture is an environmentally hazardous process, which leads to toxic heavy metal accumulation in industrial effluent and increased VOC emissions. The research conducted modified this process by replacing both the HSF technology with HSD technology and substitution with a more compatible organoclay. The modified organoclay exhibited the intercalation of cationic surfactant between the clay layers and thus, changed the surface properties from highly hydrophilic to increasingly hydrophobic. In addition, modification of the swelling clay with cationic surfactant results in an increase in the basal or interlayer spacing of the layer and exposure of new sorption sites of clay. This modification allows a lower viscosity and better dispersion with the moderately polar solvent system used in the formulation. The viscosity vs time results additionally illustrated that although the HSD system produced FOG particles larger than those of the HSF system and used less solvant over time, the HSF system produced CSAP that was more viscous and the smaller FOG particle size caused electrostatic tension in the paint suspension ie syneresis. The larger FOG particle size from the HSD system essentially contributed to paint stability. The improved CSAP manufacturing process achieved a substantial lower volume of solvent, which can also be recycled. Further research includes the application of solid-state NMR to further analyse the complexity of these organoclays in determining solubility limitations. Note de contenu : - EXPERIMENTAL : Materials - Procedure - Attenuated Total Reflectance FTIR (ATR-FTIR) - Mass data
- RESULTS AND DISCUSSION : FTIR data - Solubility in polar and non-polar solvents - Viscosity testing
- FIGURES : 1. HSF (Highest Speed Fluidar) schematic (supplied by the undisclosed paint company) - 2. HSD (Highest Speed Disperser) schematic (supplied by the undisclosed paint company) - 3. Chain stopped alkyd resin FTIR spectrum - 4. Polar organoclay FTIR spectrum - 5. Moderately non-polar organoclay FTIR spectrum - 6. Non-polar solvent FTIR spectrum - 7. Cream sample viscosity vs time graph, (40°C oven samples in fig. 7-16) - 8. Organic red sample - 9. Inorganic red sample - 10. Organic yellow sample - 11. Inorganic yellow sample - 12. Orange sample - 13. Green sample - 14. Blue sample - 15. Brown sample - 16. Grey sample - 17. Intercalation of alkyl ammonium cations in between montmorillonite clay silicate layers - 18. Steric stabilisation caused by the surfactants - 19. Electrostatic stabilisation - 20. Sag panel (ail sag) and HSF vs HSD panels (pass sag)
- TABLES : 1. Experimental procedure - 2. Average percentage yield for both HSD and HSF technology - 3. FTIR absorption data for the 3 different types of clays - 4. Spontaneous solubility results - 5. HSD and HSF particle size and CSAP performance data - 6. Viscosity stability table resultsEn ligne : https://drive.google.com/file/d/1QCOLd39kQBgGn7YUZAJdHMGfKpENvD9s/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30620
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 208, N° 4641 (05/2018) . - p. 16-24[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19929 - Périodique Bibliothèque principale Documentaires Disponible Hectorite clay - a unique, multi-purpose rheological additive. Part 2 - Applications / Douglas N. Smith in PAINTINDIA, Vol. LXI, N° 4 (04/2011)
[article]
Titre : Hectorite clay - a unique, multi-purpose rheological additive. Part 2 - Applications Type de document : texte imprimé Auteurs : Douglas N. Smith, Auteur ; Wouter Ijdo, Auteur Année de publication : 2011 Article en page(s) : p. 51-58 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Argile
Hectorite
Revêtements -- Additifs:Peinture -- Additifs
Revêtements:Peinture
Rhéologie
ViscoélasticitéIndex. décimale : 667.9 Revêtements et enduits Note de contenu : - Rheological activity and viscoelastic properties
- Natural hectorite used in waterborne decorative coatings
- Hectorite-based organoclays in solventborne coatings formulations
- Hectorite clay in waterborne metallic effect coatings
- Natural hectorite in elastomeric roof coatings
- Other applications for natural hectoritePermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11663
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Code-barres Cote Support Localisation Section Disponibilité 013020 - Périodique Bibliothèque principale Documentaires Disponible High barrier sustainable co-polymerized coatings / Lokendra Pal in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 5, N° 4 (12/2008)
[article]
Titre : High barrier sustainable co-polymerized coatings Type de document : texte imprimé Auteurs : Lokendra Pal, Auteur ; Margaret K. Joyce, Auteur ; Paul D. Fleming, Auteur ; Stéphanie A. Cretté, Auteur ; Charles Ruffner, Auteur Année de publication : 2008 Article en page(s) : p. 479-489 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Argile
Cartonnages
Copolymère styrène butadiène styrène
Gaz
Matériaux -- Propriétés barrières
Perméabilité
Polyacryliques
Polymérisation
Revêtements protecteurs
Vapeur d'eauIndex. décimale : 667.9 Revêtements et enduits Résumé : The goal of this project was to determine the most promising co-polymerized (COP) coating for paperboard for protection against gas and water vapor transmission. The driving force for this was to create a coating that will significantly slow the permeation of water and water vapor through the paperboard, while retaining its mechanical properties. This was accomplished by creating high barrier co-polymerized coatings. This study focuses on the use of modified high shape factor engineered (HSFE) clays. In this study, acrylic co-monomers have been polymerized in the presence of three different, finely dispersed HSFE clays, to prepare the co-polymerized coatings. The wet coating structure was studied using Brookfield and Hercules Hi-Shear viscometers, water retention, and dispersion stability. The dry coating structure was studied using WYKO White Light Interferometry and burn out tests. The cylindrical laboratory coater (CLC)-coated samples were then tested for gas and water vapor permeability. Additionally, the optical and surface properties were determined. The CLC-coated board samples showed almost zero gas permeability and a significant reduction in water vapor transmission rate (water vapor permeability). The water vapor permeability was reduced up to 90% reflecting a one order of magnitude decrease in comparison to a commercially coated sample. The co-polymerized coating with high shape factor and thinner platelet clay displayed the lowest water vapor permeability and the best optical and surface properties, thereby making it the most promising barrier coating for solid bleached sulfate paperboard. DOI : 10.1007/s11998-008-9101-0 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9101-0.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3475
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Code-barres Cote Support Localisation Section Disponibilité 010911 - Périodique Bibliothèque principale Documentaires Disponible High torque vane rheometer for concrete : principle and validation from rheological measurements / Patrice Estellé in APPLIED RHEOLOGY, Vol. 22, N° 1 (2012)
[article]
Titre : High torque vane rheometer for concrete : principle and validation from rheological measurements Type de document : texte imprimé Auteurs : Patrice Estellé, Auteur ; Christophe Lanos, Auteur Année de publication : 2012 Article en page(s) : 7 p. Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Argile
Kaolin
Matériaux cimentaires
RhéologieIndex. décimale : 532.05 Mécanique des fluides et des liquides - Dynamique (cinétique et cinématique) Résumé : Un rhéomètre à haut couple équipé d'une géométrie vane est utilisé pour mesurer le seuil de mise en écoulement de matériaux cimentaires. Il est montré que cet appareil est approprié pour évaluer le seuil de mise en écoulement de différents bétons et mortiers à l'état frais en comparaison aux seuils déterminés au cône d'Abrams. Finalement, les propriétés rhéologiques (seuil d'écoulement et comportement sous cisaillement) d'une suspension d'argile de kaolin sont étudiées avec le rhéomètre à béton, et favorablement comparées à celles obtenues par d'autres rhéomètres et géométries. Note de contenu : - MATERIALS : Industrial concretes - Mortars - Kaolin clay suspension suspension
- EXPERIMENTS : High torque vane rheometer : principle and measurement methods - Slump test - Measurements with the kaolin clay suspensionRéférence de l'article : 12881 DOI : 10.3933/ApplRheol-22-12881 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=14917
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Code-barres Cote Support Localisation Section Disponibilité 13904 - Périodique Bibliothèque principale Documentaires Disponible Les hydroxydes doubles lamellaires (HDL) / Christophe Drouet in L'ACTUALITE CHIMIQUE, N° 481 (02/2023)
PermalinkImprovement of leather flame retardancy through nano clay addition / Samaneh Sepehri in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXV, N° 11 (11/2020)
PermalinkIn situ polymerization of PET in the presence of pristine and organo-modified clays / Babak Esmaeili in INTERNATIONAL POLYMER PROCESSING, Vol. XXVIII, N° 3 (07/2013)
PermalinkInfluence of pigment packing behavior on the adhesive requirements of aqueous paper coatings / Karl W. Howard in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 2 (03/2015)
PermalinkInfluence of processing conditions on the preparation of clay-based nanocomposites by twin-screw extrusion / Bruno Vergnes in INTERNATIONAL POLYMER PROCESSING, Vol. XXXIV, N° 5 (11/2019)
PermalinkInfluence of solvent washing and soxhlet extraction on the thermal stability of organically modified layered silicates / T. Mariappan in INTERNATIONAL POLYMER PROCESSING, Vol. XXIX, N° 1 (03/2014)
PermalinkInfluence of twin-screw processing conditions on structure and properties of polypropylene – organoclay nanocomposites / T. Domenech in INTERNATIONAL POLYMER PROCESSING, Vol. XXVII, N° 5 (11/2012)
PermalinkInfluence des paramètres physico-chimiques sur les propriétés rhéométriques et la structure des gels thixotropes d'argiles / Frédéric Pignon in LES CAHIERS DE RHEOLOGIE, Vol. XV, N° 4 (10/1997)
PermalinkInteractions interparticulaires et thixotropie des gels d'argile / Céline Martin in LES CAHIERS DE RHEOLOGIE, Vol. XVII, N° 1 (10/2000)
PermalinkIntercalated polybenzoxazine/organoclay composites with enhanced performance in corrosion resistance / Changlu Zhu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 1 (01/2016)
PermalinkPermalinkPermalinkMatrix degradation during high speed extrusion of polypropylene/clay nanocomposites - Influence on filler dispersion / G. Normand in INTERNATIONAL POLYMER PROCESSING, Vol. XXXI, N° 4 (08/2016)
PermalinkMelt creep recovery of polyamide 6 and polypropylene nanocomposites blended with layered silicate / G.-G. Lin in INTERNATIONAL POLYMER PROCESSING, Vol. XXXI, N° 1 (03/2016)
PermalinkMicrostructural evolution of PP/EPDM/organoclay nanocomposites in a twin screw extruder / R. Khosrokhavar in INTERNATIONAL POLYMER PROCESSING, Vol. XXVI, N° 2 (05/2011)
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