Design and fabrication of superhydrophobic layered double hydroxide and oxides composite coating on brass mesh with excellent anticorrosion, delay icing and oil-water separation ability / Yuanyuan Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 1 (01/2023)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 1 (01/2023) . - p. 275-289 Titre : Design and fabrication of superhydrophobic layered double hydroxide and oxides composite coating on brass mesh with excellent anticorrosion, delay icing and oil-water separation ability Type de document : texte imprimé Auteurs : Yuanyuan Wang, Auteur ; Qian Zhong, Auteur ; Linqiu Wu, Auteur ; Pengfei Liu, Auteur ; Hangmin Guan, Auteur ; Yingfei Hu, Auteur ; Qing Lin, Auteur ; Wei Wang, Auteur Année de publication : 2023 Article en page(s) : p. 275-289 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs Anticorrosion Caractérisation Composites Filtres auto-nettoyants Hydroxydes doubles lamellaires Laiton Les laitons sont des alliages jaunes, très ductiles et malléables, composés essentiellement de cuivre et de zinc, aux proportions variables, dont la fabrication directe à partir de minerais appropriés était déjà maîtrisée par les métallurgistes avant l'Antiquité. Selon les propriétés visées, ils peuvent aujourd'hui contenir d'autres éléments d'addition comme le plomb, l'étain, le nickel, le chrome et le magnésium, dans des proportions très modérées. (Wikipedia) Maille métallique Oléophilie Revêtements Revêtements antigel Séparation huile/eau Index. décimale : 667.9 Revêtements et enduits Résumé : In this work, a superhydrophobic and superoleophilic brass mesh had been prepared. The prepared sample displayed a water contact angle (WCA) of 160o and was characterized by field emission scanning electron microscope (FE-SEM), white light interferometer (WLI), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) techniques. Besides, a high-speed camera was used to study the impact process of a droplet on the surface of the prepared sample. The superhydrophobic brass mesh exhibited excellent self-cleaning ability, environmental adaptability, corrosion resistance (η = 98.9%), and delayed icing ability (~ 45 min). Furthermore, the superhydrophobic mesh could be used as a filter to fast and efficiently separate various kinds of oils (light and heavy oils) and oil pollutants in daily life and industry. The superhydrophobic filter could be reused 50 times for oil-water separation without any apparent decrease in its separation capability. Thus, the superhydrophobic brass mesh prepared by a simple method holds promise for various applications in the industrial field of oil-water separation. Note de contenu : EXPERIMENTAL AND CHARACTERIZATION : Materials - Sample preparation - Sample characterizations - Self-cleaning ability - Environmental adaptability - Corrosion resistance - Delayed icing test - Oil-water separation - RESULTS AND DISCUSSION : Surface morphology, roughness and composition - Surface wettability - Self-cleaning ability - Environmental adaptability - Corrosion resistance - Delayed icing ability - Oil-water separation - Table 1: Corrosion potential, corrosion current, and corrosion resistance efficiency of the original brass mesh, Brass-LDH, and Brass-LDH-SA in a 3.5 wt% NaCl solution DOI : https://doi.org/10.1007/s11998-022-00667-1 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00667-1.pdf?pdf=button% [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38842 [article]

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Different machined wood slices for separation of both oil/water mixtures and emulsions / Yanbiao Zhou in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 5 (09/2021)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 5 (09/2021) . - p. 1431-1443 Titre : Different machined wood slices for separation of both oil/water mixtures and emulsions Type de document : texte imprimé Auteurs : Yanbiao Zhou, Auteur ; Kaige Qu, Auteur ; Xiaoqiang Luo, Auteur ; Lihui Zhang, Auteur Année de publication : 2021 Article en page(s) : p. 1431-1443 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bois Caractérisation Emulsions Hydrophobie Mélange Oléophilie Séparation huile/eau Index. décimale : 667.9 Revêtements et enduits Résumé : Tremendous efforts have been exerted to develop effective and ecofriendly materials for separation of oil/water mixtures and emulsions. However, porous materials with superwettability for oil/water separation are usually fabricated from nonrenewable precursors, which contradicts with the concept of green development. Inspired by the cellular porosity and hierarchical organization of wood, biodegradable cut and sawed wood slices with different pore sizes were separately machined by a razor blade and a fine-toothed saw. The cut and sawed slices separately possessed rough single- and double-layer structures. After silylation with MTCS, both machined slices repelled water entirely but allowed the complete permeation of oils. The fragment-free cut slice with relatively large pore size was able to separate immiscible oil/water mixtures, while the fragment-covered sawed slice with relatively small pore size could separate water-in-oil emulsions. Compared with other wood slice by sawing, the section structure and superoleophilic property made the slices have a high oil flux for a series of mixtures and emulsions, which reached 72 kL m-2 h-1 and 464 L m-2 h-1, respectively. The flux was high even after 10 cycles, exhibiting favorable recyclable stability. Note de contenu : - Materials - Machining of different wood slices - Fabrication of superhydrophobic slices - Separation of oil/water mixtures - Separation of water-in-oil emulsions - Characterization DOI : https://doi.org/10.1007/s11998-021-00511-y En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00511-y.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36444 [article]

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Multifunctional carbon nanofiber systems mass produced from water soluble polymers / Lee D. Cremar in CHEMICAL FIBERS INTERNATIONAL, Vol. 66, N° 1 (03/2016)  

[article]  inCHEMICAL FIBERS INTERNATIONAL > Vol. 66, N° 1 (03/2016) . - p. 40-42 Titre : Multifunctional carbon nanofiber systems mass produced from water soluble polymers Type de document : texte imprimé Auteurs : Lee D. Cremar, Auteur ; Javier Acosta-Martinez, Auteur ; Alexsandra Villarreal, Auteur ; Alfonso Salinas, Auteur ; Lin Wei, Auteur ; Yuanbing Mao, Auteur ; Karen Lozano, Auteur Année de publication : 2016 Article en page(s) : p. 40-42 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Conduction électrique Fibres de carbone Hydrophobie Matériaux poreux Nanofibres Nontissés Oléophilie Solutions de polymère Stabilité thermique Thermogravimétrie Résumé : The high cost of polymer precursors, usage of organic solvents and/or energy consumption during carbonization post-processes has limited the use of carbon fiber systems for every day applications. Here, nonwoven nanofiber mats are developed utilizing the Forcespinning technology and subsequently exposed to acid vapor induced dehydration and low temperature carbonization (T < 800 °C) processes to produce multifunctional fine carbon fibers. This method allows for the production of highly porous nonwoven carbon cloths or yarns with micro- and mesoporosity. The fiber diameter can be tuned in the range of hundreds of nanometers to several microns. Thermophysical and microstructural characterization indicate graphitic formation due to carbonization that occurs during the chemical and heat treatment. The developed system shows high electrical conductivity, high surface area, thermal stability, hydrophobicity, and oleophilic behavior. En ligne : https://drive.google.com/file/d/1-MLQlexnUDaPandtoAvzA3bW7YI4Dxu2/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25846 [article]

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Preparation and applications of two fluoroalkyl end-capped vinyltrimethoxysilane oligomeric composites possessing superoleophilic/superhydrophobic characteristic : a review / Hideo Sawada in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 3 (05/2022)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 3 (05/2022) . - p. 741-756 Titre : Preparation and applications of two fluoroalkyl end-capped vinyltrimethoxysilane oligomeric composites possessing superoleophilic/superhydrophobic characteristic : a review Type de document : texte imprimé Auteurs : Hideo Sawada, Auteur Année de publication : 2022 Article en page(s) : p. 741-756 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Composés aromatiques Composés fluorés Fluoropolymères Hydrophobie Oléophilie Oligomères Séparation huile/eau Substances dangereuses -- Elimination Vinyltriméthoxysilane Index. décimale : 667.9 Revêtements et enduits Résumé : Two fluoroalkyl end-capped vinyltrimethoxysilane oligomers [RF-(CH2CHSi(OMe)3)n-RF; RF = fluoroalkyl group] can be synthesized by reaction of fluoroalkanoyl peroxides [RF-C(=O)O-O(O=)C-RF] with vinyltrimethoxysilane under mild conditions. Fluorinated oligomers thus obtained have been applied to the sol-gel reactions in the presence of a wide range of guest molecules (Guest) under non-catalytic, alkaline or acidic conditions to provide the corresponding fluorinated oligomers/Guest composites. Some of these fluorinated composites were found to exhibit a uperoleophilic/superhydrophobic characteristic on their surface, applying to not only the separation of oil and water but also the selective removal of fluorinated aromatic compounds in aqueous solutions. These findings will be reviewed in this article. Note de contenu : - Preparation and properties of fluoroalkyl end-capped vinyltrimethoxysilane oligomer/PSt and /PTFE composites - Preparation and properties of fluoroalkyl end-capped vinyltrimethoxysilane oligomeric composites containing gluconamide unit - Preparation and properties of fluoroalkyl end-capped oligomeric cellulose derivatives composites - Preparation and properties of fluoroalkyl end-capped vinyltrimethoxysilane oligomer/alkyl-modified cellulose derivatives composites - Preparation and properties of fluoroalkyl end-capped vinyltrimethoxysilane oligomer/cellulose fiber composites - Preparation and properties of fluoroalkyl end-capped vinyltrimethoxysilane oligomer/cellulose nanofiber composites - Preparation and properties of fluoroalkyl end-capped vinyltrimethoxysilane oligomer/micro-sized silica gel composite - Preparation and properties of fluoroalkyl end-capped vinyltrimethoxysilane oligomer/cyclodextrin composites - Preparation and properties of fluoroalkyl end-capped vinyltrimethoxysilane oligomer/magnetite composites DOI : https://doi.org/10.1007/s11998-021-00598-3 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00598-3.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38069 [article]

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Preparation of fluoroalkyl end-capped vinyltrimethoxysilane oligomeric silica/phosphonic acids nanocomposites possessing superoleophobic/superhydrophilic and superoleophilic/superhydrophobic characteristics : application of these nanocomposites to the separation of oil and water in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 5 (09/2017)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 5 (09/2017) Titre : Preparation of fluoroalkyl end-capped vinyltrimethoxysilane oligomeric silica/phosphonic acids nanocomposites possessing superoleophobic/superhydrophilic and superoleophilic/superhydrophobic characteristics : application of these nanocomposites to the separation of oil and water Type de document : texte imprimé Année de publication : 2017 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Eau Filtres Fluor Huiles et graisses Hydrophobie Matériaux hybrides Oléophilie Oléophobie Oligomères Papier Phosphonique, Acide Séparation (technologie) Silice La silice est la forme naturelle du dioxyde de silicium (SiO2) qui entre dans la composition de nombreux minéraux. La silice existe à l'état libre sous différentes formes cristallines ou amorphes et à l'état combiné dans les silicates, les groupes SiO2 étant alors liés à d'autres atomes (Al : Aluminium, Fe : Fer, Mg : Magnésium, Ca : Calcium, Na : Sodium, K : Potassium...). Les silicates sont les constituants principaux du manteau et de l'écorce terrestre. La silice libre est également très abondante dans la nature, sous forme de quartz, de calcédoine et de terre de diatomée. La silice représente 60,6 % de la masse de la croûte terrestre continentale. Verre Index. décimale : 667.9 Revêtements et enduits Résumé : Fluoroalkyl end-capped vinyltrimethoxysilane oligomer [RF–(CH2CHSi(OMe)3)n–RF; RF = fluoroalkyl group; n = 2, 3] can undergo the sol–gel reactions in the presence of a variety of phosphonic acid derivatives such as 1-hydroxyethylidene-1,1-diphosphonic acid, nitrilotris(methylene phosphonic acid), and 2-phosphonobutane-1,2,4-tricarboxylic acid under alkaline conditions to provide the corresponding fluorinated oligomeric silica/phosphonic acids nanocomposites. Interestingly, it was demonstrated that the modified glasses and filter papers treated with these obtained fluorinated nanocomposites can exhibit the superoleophobic/superhydrophilic and superoleophilic/superhydrophobic characteristics on their surfaces, respectively. More interestingly, the modified filter papers treated with these nanocomposites were applied to the separation of the mixture of oil and water. Note de contenu : - EXPERIMENTAL : Measurements - MATERIALS : Preparation of fluoroalkyl end-capped vinyltrimethoxysilane oligomeric silica/phosphonic acids nanocomposites [Rf-(VM-Sio2)n-Rf/PHSP acids] - Preparation of modified glass treated with the Rf-(VM-Sio2)n-Rf/PHSP acids nanocomposites by casting method - RESULTS AND DISCUSSION : Preparation of fluoroalkyl end-capped vinyltrimethoxysilane oligomeric silica/phosphonic acids nanocomposites - Surface modification of glasses and filter papers by the use of the Rf-(VM-Sio2)n-Rf/PHSP acids nanocomposites DOI : 10.1007/s11998-016-9910-5 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-016-9910-5.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29152 [article]

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Wettability control between superoleophobic and superoleophilic characteristics on the modified superhydrophobic surfaces treated with fluoroalkyl end-capped vinyltrimethoxysilane oligomeric silica/poly(styrene-co-butadiene) nanocomposites: application to the separation of oil and water / Arissara Ratcha in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 1 (01/2018)  

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