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Moisture sorption/desorption of collagen / Albert M. Manich in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CV, N° 7 (07/2010)
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Titre : Moisture sorption/desorption of collagen Type de document : texte imprimé Auteurs : Albert M. Manich, Auteur ; Fernando Maldonado, Auteur ; Josep Carilla, Auteur ; M. Catalina, Auteur ; Agusti Marsal, Auteur Année de publication : 2010 Article en page(s) : p. 229-241 Note générale : Bibliogr. Langues : Américain (ame) Tags : Sorption/désorption Collagène Cuir 'Poudre de peau' 'Sorption dynamique vapeur' 'Brunaeur Emmett and Teller' (BET) 'Guggenheim, Andersen Boer' (GAB) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Moisture sorption/desorption of two physical forms of collagen (hide powder and leather) was studied. Despite the fact that the testing of sorption/desorption behavior is time consuming, the application of a Dynamic Vapor Sorption analyzer enabled us to characterize the sorption/desorption behavior of materials in a relatively short time. Differences in sorption and desorption can be related to the accessibility and internal tortuosity of the materials. BET and GAB models were used to analyze variations in monolayer sorption capacity (internal sorption surface) of different forms of collagen (hide powder and leather). Variations in the energy constants related to primary and secondary sorption were also considered. Given that tests in desorption were performed, the BET and GAB models were also fitted to desorption and the differences observed in the parameters were analyzed. A model of sorption-desorption for porous materials was devised to account for the differences between sorption and desorption. En ligne : https://drive.google.com/file/d/1rsA4uYRuzAn7zyFwTQxNmytTwMlJYPQn/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9722
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CV, N° 7 (07/2010) . - p. 229-241[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 012329 - Périodique Bibliothèque principale Documentaires Disponible A new water-in-powder technology : a novel structure for creating unique cosmetic products / Keiji Igarashi in IFSCC MAGAZINE, Vol. 11, N° 1 (01-02-03/2008)
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Titre : A new water-in-powder technology : a novel structure for creating unique cosmetic products Type de document : texte imprimé Auteurs : Keiji Igarashi, Auteur ; Keisuke Sagara, Auteur ; Junichiro Egawa, Auteur Année de publication : 2008 Article en page(s) : p. 31-34 Note générale : Bibliogr. Langues : Anglais (eng) Tags : 'Poudre humide' 'Résistance à l'eau' Hydrophilie Fractale Encapsulation Technologie Index. décimale : 668.5 Parfums et cosmétiques Résumé : A water-in-powder cosmetic is one in which a large amount of water is encapsulated in a powder. In this study we describe the development of this type of cosmetic. We first focused on the hydrophilic/hydrophobic balance of the nano-sized powder surface. We looked at surface state of powders in the gas adsorption test and discovered functional powders that have an optimized balance of hydrorepellency and hydrophilicity due to fractal surface and free hydroxyl groups, respectively. Using this material we created a new powder technology that can encapsulate a large quantity of water in a stable structure. We also looked at how the powders encapsulated water by observing them with wet-SEM and how the encapsulated water is stabilized by measuring the water mobility with 17O-NMR. Based on these result, we developed a new technology with water and powder. By encapsulating a large amount of water, we achieved a cosmetic with many unique characteristics: The powder cosmetic can become a liquid by application of friction on skin, it is convenient to use and provides moist, cool feel. It also functions as an excellent makeup by spreading smoothly on skin to form a uniform makeup coating Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10386
in IFSCC MAGAZINE > Vol. 11, N° 1 (01-02-03/2008) . - p. 31-34[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 010282 - Périodique Bibliothèque principale Documentaires Disponible 010056 - Périodique Bibliothèque principale Documentaires Disponible Resonance disintegration produces ultrafine carbon products from pyrolysis char for use in printing inks / Timothy Karpetsky in PAINTINDIA, Vol. LI, N° 12 (12/2001)
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Titre : Resonance disintegration produces ultrafine carbon products from pyrolysis char for use in printing inks Type de document : texte imprimé Auteurs : Timothy Karpetsky, Auteur Année de publication : 2001 Article en page(s) : p. 73-79 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Résonance 'Onde choc' Désintégration Pneumatique 'Déchet caoutchouc' 'Poudre ultrafine' Pyrolyse Semicoke Préparation 'Noir carbone' 'Pigment minéral' Encre Index. décimale : 667.9 Revêtements et enduits Résumé : Low temperature pyrolysis of shredded automobile tires yields char consisting of carbon particles. This coarse granular material must be size-reduced to be of commercial interest. Traditional milling and grinding techniques have been tried without success. However, a new efficient and inexpensive method, resonance disintegration, consistently converts char to ultrafine carbon products in production rates of one ton per hour. During resonance disintegration, char granules experience multiple high-energy shock waves, resulting in the immediate production of carbon having an average primary particle diameter of 38 nanometers in aggregates and agglomerates ranging in size from 100 nanometers to 10 microns. Over 70% of the carbon particulate volume is below one micron when dispersed in water. Very rapid surface treatment of particulates can be accomplished, as coarse material is size-reduced using resonance disintegration. The uses of these new carbon products as black pigments in printing inks are also described. Note de contenu : PYROLYTIC CHAR
RESONANCE DISINTEGRATION (RD)
RESONANCE DISINTEGRATION OF CARBON BLACK AND PYROLYTIC CHAR : Particle size distribution - Pyrolytic char
MORPHOLOGY OF PYROLYTIC CHAR BEFORE AND AFTER RESONANCE DISINTEGRATION
PHYSICAL PROPERTIES OF CHAR AFTER RESONANCE DISINTEGRATIONPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12647
in PAINTINDIA > Vol. LI, N° 12 (12/2001) . - p. 73-79[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001273 - Périodique Bibliothèque principale Documentaires Disponible Stabilization of zinc pigments in aqueous alkaline media by paint resins / Bodo Müller in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 68, N° 863 (12/1996)
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Titre : Stabilization of zinc pigments in aqueous alkaline media by paint resins Type de document : texte imprimé Auteurs : Bodo Müller, Auteur Année de publication : 1996 Article en page(s) : p. 51-53 Note générale : Bibliogr. Langues : Américain (ame) Tags : 'Peinture anticorrosion' 'Pigment métallique' Zinc 'Structure lamellaire' 'Poudre eau' Liant Interaction Index. décimale : 667.9 Revêtements et enduits Résumé : Zinc pigments react in alkaline aqueous media for the evolution of hydrogen. Paint resins inhibit this corrosion reaction at pH value of 8 better than at pH = 10. The examined alkyd resins, phenolic resins, acrylic resin, and one epoxy ester resin are good corrosion inhibitors for the lamellar leafing zinc pigment. The rate of the corrosion reaction is influenced by the specific surface area of the zinc pigments ; with a lamellar leafing zinc pigment (specific surface about 8 m2/g) more hydrogen is evolved than from spherical zinc dust (specific surface about 0.25 m2/g). Addition of one epoxy ester resin almost stabilizes aqueous alkaline dispersions of zinc dust. The paint resins examined in this study are commercial products used for different types of paints. It should be possible to synthesize paint resins (e.g., epoxy esters) with improved properties tailor-made for waterborne anticorrosive paints with zinc pigments. Note de contenu : - EXPERIMENTAL : Lamellar leafing zinc pigment - Zinc dust
- RESULTS AND DISCUSSION : Lamellar leafing zinc pigment - Zinc dustPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18480
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 68, N° 863 (12/1996) . - p. 51-53[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 003521 - Périodique Bibliothèque principale Documentaires Disponible 003532 - Périodique Bibliothèque principale Documentaires Exclu du prêt