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La cellulose est un glucide constitué d'une chaîne linéaire de molécules de D-Glucose (entre 200 et 14 000) et principal constituant des végétaux et en particulier de la paroi de leurs cellules.
Cellulose
Commentaire :
La cellulose est un glucide constitué d'une chaîne linéaire de molécules de D-Glucose (entre 200 et 14 000) et principal constituant des végétaux et en particulier de la paroi de leurs cellules.
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The influence of barrier pigments in waterborne barrier coatings on cellulose nanofiber layers / Mohammed Al-Gharrawi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 1 (01/2022)
[article]
Titre : The influence of barrier pigments in waterborne barrier coatings on cellulose nanofiber layers Type de document : texte imprimé Auteurs : Mohammed Al-Gharrawi, Auteur ; Rachel Ollier, Auteur ; Jinwu Wang, Auteur ; Douglas W. Bousfield, Auteur Année de publication : 2022 Article en page(s) : p. 3-14 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Aliments -- Emballages
CelluloseLa cellulose est un glucide constitué d'une chaîne linéaire de molécules de D-Glucose (entre 200 et 14 000) et principal constituant des végétaux et en particulier de la paroi de leurs cellules.
Eléments finis, Méthode des
Matériaux -- Propriétés barrières
Nanofibres
Revêtements en phase aqueuse
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : Layers of cellulose nanofibers (CNF) have great potential to be used in food packaging applications because of their oxygen and grease barrier properties. However, because of their sensitivity to moisture, they likely will need to be used in a layered structure with water vapor barrier layers. Waterborne barrier coatings (WBBC) have the potential to provide this water vapor barrier, but their performance on paper with a CNF layer has not been described in the literature. Paper that had a CNF layer was coated with three different WBBC with various levels of two different barrier pigments to improve the water vapor barrier properties of these systems. The effective diffusion coefficient of these systems was obtained by fitting the data to a two-layer diffusion model. A finite element code was used to predict the flux rate of water vapor through the barrier layers in the presence of a barrier pigment. The dangers of samples “blocking” in production have been tested as well as grease barrier properties. The presence of the CNF layer on paper is shown to improve the performance of the water vapor barrier layer, in some cases, by a factor of six. Adding barrier pigment to the WBBC improves barrier properties at low concentration by 15%, but as the concentration of pigment increases, the barrier properties decrease. The water vapor transmission rate does not decrease to the same order of magnitude as expected from simple theoretical models and the finite element calculations. This result likely is linked to fine bubbles in the coatings that are hard to remove or other defects that are generated during coating or drying. Barrier pigments remove concerns around blocking. All samples had good grease barrier properties. Note de contenu : - Table 1 : Ranking system for blocking test
- Table 2 : The values of effective moisture diffusion coefficient Dc in coatings obtained from fitting equation (1) for various pigment types and concentrations for polymers A, B, C. Values are in m2/s × 1010DOI : https://doi.org/10.1007/s11998-021-00482-0 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00482-0.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37140
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 1 (01/2022) . - p. 3-14[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23313 - Périodique Bibliothèque principale Documentaires Disponible The road to more sustainability and functionality in liquid laundry detergents / Alain Phyfferoen in SOFW JOURNAL, Vol. 147, N° 5 (05/2021)
[article]
Titre : The road to more sustainability and functionality in liquid laundry detergents Type de document : texte imprimé Auteurs : Alain Phyfferoen, Auteur ; John Swazey, Auteur Année de publication : 2021 Article en page(s) : p. 30-33 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cellulose La cellulose est un glucide constitué d'une chaîne linéaire de molécules de D-Glucose (entre 200 et 14 000) et principal constituant des végétaux et en particulier de la paroi de leurs cellules.
Détergents
Développement durable
Encapsulation
Fermentation
Produits nettoyantsIndex. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : When you consider the environmental impact of laundry detergent, it’s almost mind-boggling. A 2017 United States Environmental Protection Agency report estimated water usage per load of laundry. The average residential top-loading washing machine can use up to 41 gallons of water per load (155.2 litres). (Newer, more-efficient machines on the market can use as low as 10.5 gallons or just under 40 litres) [1]. Now consider that, globally, 67% of people said they do laundry twice per week, according to a 2017 Nielsen survey. That is a lot of water! Along with the millions and millions of gallons of wastewater, now think about all the laundry detergent being used to clean that laundry and where it ends up. This means extraordinarily large amounts of ingredients derived from petroleum and microplastics entering our waters and potentially harming marine life. Note de contenu : - Encapsulation requires stabilisation
- FDC, a nature-based and biodegradable technology
- How should fermentation-derived cellulose be used ?
- FDC, unprecedent liquid structuring and particle suspensionEn ligne : https://drive.google.com/file/d/1Y3AlRnfsKMsXIKG8Hvat4JETEAc2-Z6H/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35891
in SOFW JOURNAL > Vol. 147, N° 5 (05/2021) . - p. 30-33[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22736 - Périodique Bibliothèque principale Documentaires Disponible Thermoset coatings engineered by nature / Simen Prang Folkner in EUROPEAN COATINGS JOURNAL (ECJ), (09/2023)
[article]
Titre : Thermoset coatings engineered by nature : Two component spraying enabled by green, cost-effective nanocellulose Type de document : texte imprimé Auteurs : Simen Prang Folkner, Auteur Année de publication : 2023 Article en page(s) : p. 32-36 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Biomatériaux
CelluloseLa cellulose est un glucide constitué d'une chaîne linéaire de molécules de D-Glucose (entre 200 et 14 000) et principal constituant des végétaux et en particulier de la paroi de leurs cellules.
Epoxydes
Formulation (Génie chimique)
Mélanges-maîtres (chimie)
Nanoparticules
Revêtements organiques
Rhéologie
ThermodurcissablesIndex. décimale : 667.9 Revêtements et enduits Résumé : Nanocelluloses are emerging plant-based materials, with increasing scientific attention and industrial production capacity steadily ramping up. Their application is usually limited to water-based systems, but a new process that produces epoxy resin-based nanocellulose masterbatch has been verified for application in thermoset coating. This article describes epoxy resin-based nanocellulose masterbatch and showcases the effectiveness when compared with a commercial reference. Note de contenu : - Highly effective bio-based material at low doses
- Cellulose nanofibrils in water phase to epoxy resin-phase
- Rheology of water-based CNFS
- High sag index for novel additive
- Time-saving two-component spray applications
- Wide-ranging thermoset opportunities
- Table 1 : Coating formulations used during testingEn ligne : https://drive.google.com/file/d/1mPnD_icLczyoL_UDYAPfFVHcvHA35kJv/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39811
in EUROPEAN COATINGS JOURNAL (ECJ) > (09/2023) . - p. 32-36[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24190 - Périodique Bibliothèque principale Documentaires Disponible Thickening paints for any weather / John J. Rabasco in EUROPEAN COATINGS JOURNAL (ECJ), N° 6 (06/2019)
[article]
Titre : Thickening paints for any weather : Consistent rheology under varying coating application temperatures Type de document : texte imprimé Auteurs : John J. Rabasco, Auteur ; Daniel A. Saucy, Auteur ; Antony Van Dyck, Auteur ; Kebede Beshah, Auteur Année de publication : 2019 Article en page(s) : p. 18-24 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cellulose La cellulose est un glucide constitué d'une chaîne linéaire de molécules de D-Glucose (entre 200 et 14 000) et principal constituant des végétaux et en particulier de la paroi de leurs cellules.
Epaississants
Latex
Polyuréthane éthoxylé modifié de façon hydrophobe
Revêtements -- Additifs:Peinture -- Additifs
Rhéologie
Solutions aqueuses (chimie)Index. décimale : 667.9 Revêtements et enduits Résumé : Hydrophobically modified ethylene oxyde urethane (HEUR) rheology modifiers are used widely in water-borne architectural coatings to impart specific rheological and application properties. Note de contenu : - The state of the art
- New all-weather HEUR technology
- Aqueous solution viscosities of HEUR rheology modifiers
- Aggregration tendency via NMR diffusion coefficients
- Temperature response of paints thickened with AW-HEUR
- Fig. 1 : General structure of HEUR non-ionic associative rheology modifiers
- Fig. 2 : Binder latex particles with HEUR shells forming an associative network of transient aggregates and aggregate changes with shear stress and temperature
- Fig. 3 : Commercial Paint #1 rheometer sweeps at 2°C, 21°C and 38°C
- Fig. 4 : As-is viscosity of aqueous HEUR solutions vs temperature
- Fig. 5 : Diffusion coefficients of "Acrysok RM-20206" and AW-HEUR #1 via PFG-NMR
- Fig. 6 : KU & Brookfield viscosity vs temperature for paint thickened with varying amounts of cellulosic and AW-HEUR #1
- Fig. 7 : Rheometer sweep vs temperature for paints thickened with different amounts of cellulosic and AW-HEUR #1
- Fig. 8 : KU viscosity vs temperature for paints thickened with different AW-HEUR compositions
- Table 1 : Paints thickened with varying ratios of AW-HEUR #1 and cellulosic
- Table 2 : Paints thickened with AW-HEUR polymers of differing compositionEn ligne : https://drive.google.com/file/d/1QOVFEb8g5j_GrmXmN8bV3FrCqvcw5io3/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32687
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 6 (06/2019) . - p. 18-24[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21002 - Périodique Bibliothèque principale Documentaires Disponible Usability of cellulose-based binder in water-based flexographic ink / Sinan Sonmez in COLORATION TECHNOLOGY, Vol. 139, N° 3 (06/2023)
[article]
Titre : Usability of cellulose-based binder in water-based flexographic ink Type de document : texte imprimé Auteurs : Sinan Sonmez, Auteur ; Abdus Salam, Auteur ; Paul D. Fleming III, Auteur ; Alexandra Pekarovicova, Auteur ; Qingliu Wu, Auteur Année de publication : 2023 Article en page(s) : p. 239-247 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cellulose La cellulose est un glucide constitué d'une chaîne linéaire de molécules de D-Glucose (entre 200 et 14 000) et principal constituant des végétaux et en particulier de la paroi de leurs cellules.
Encre flexographique
Formulation (Génie chimique)
Liants en phase aqueuseIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Packaging must have a good commercial appearance and is generally obtained by ink transferred to its substrate. It is important that the ink used in packaging printing is produced from environmentally friendly and sustainable raw materials as well as being suitable for the printing system. The increasing demand in the field of printed packaging and the scarcity of resources to meet this demand have accelerated the search for new sources for inks. For this purpose, inks produced in the laboratory using a modified cellulose-based binder, a commercial acrylic resin and a commercial soybean protein were compared with a commercial ink. As a result of the study, it was determined that the printability properties of the ink obtained by using the modified cellulose-based binder were better than the ink obtained with commercial soybean protein. It was determined that it showed printability properties close to the ink produced with commercial acrylic binders. By using modified cellulose-based water-based flexographic ink instead of other commonly used binders, more environmentally friendly sustainable inks can be produced. Note de contenu : - METHODOLOGY AND MATERIAL : Ink formulation - Printing conditions
- RESULTS AND DISCUSSION : Print density - Print contrast - Specular gloss - The CIE L*a*b* colour values and ΔE - Tone value increases (TVIs) - Dot roundness - Print topography and mottle
- Table 1 : Optical and physical properties of a commercial SBS board
- Table 2 : Pigment dispersion physical and chemical properties
- Table 3 : ProSoy powders physical and chemical properties
- Table 4 : Soy vehicle formulation
- Table 5 : A standard water-based flexographic ink formulation
- Table 6 : Print density of test samplesTABLE 7. Print contrast of test samples
- Table 8 : Specular gloss of test samples
- Table 9 : The CIE L*a*b* colour values of test samples
- Table 10 : Dot measurements of 15% screen dots
- Table 11 : Print topography and mottle properties of test samplesDOI : https://doi.org/10.1111/cote.12643 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12643 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39535
in COLORATION TECHNOLOGY > Vol. 139, N° 3 (06/2023) . - p. 239-247[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24086 - Périodique Bibliothèque principale Documentaires Disponible Vinyl acetate grafting on renewable raw materials for sustainable adhesive application : A review / Akshay A. Masule in PAINTINDIA, Vol. LXXI, N° 10 (10/2021)
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