Antiwetting and low-surface-energy behavior of cardanol-based polybenzoxazine-coated cotton fabrics for oil–water separation / P. Prabunathan in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 6 (11/2020)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 17, N° 6 (11/2020) . - p. 1455-1469 Titre : Antiwetting and low-surface-energy behavior of cardanol-based polybenzoxazine-coated cotton fabrics for oil–water separation Type de document : texte imprimé Auteurs : P. Prabunathan, Auteur ; P. Elumalai, Auteur ; G. Dinesh Kumar, Auteur ; M. Manoj, Auteur ; A. Hariharan, Auteur ; G. Rathika, Auteur ; M. Alagar, Auteur Année de publication : 2020 Article en page(s) : p. 1455-1469 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse spectrale Angle de contact Caractérisation Cardanol Coton Le coton est une fibre végétale qui entoure les graines des cotonniers "véritables"(Gossypium sp.), un arbuste de la famille des Malvacées. Cette fibre est généralement transformée en fil qui est tissé pour fabriquer des tissus. Le coton est la plus importante des fibres naturelles produites dans le monde. Depuis le XIXe siècle, il constitue, grâce aux progrès de l'industrialisation et de l'agronomie, la première fibre textile du monde (près de la moitié de la consommation mondiale de fibres textiles). Eau Enduction textile Morphologie (matériaux) Polybenzoxazine Séparation (technologie) Séparation huile/eau Spectroscopie de photoélectrons Index. décimale : 667.9 Revêtements et enduits Résumé : In the present work, the surface behavior of cotton fabrics coated with a series of bio-based polybenzoxazines is explored. Herein, we report the design and synthesis of bio-based benzoxazine monomers (C-x) using cardanol (C) and seven different amines (x = ba, ha, dda, oda, ddm, jef, and fa). The molecular structures of the benzoxazine monomers have been confirmed using FTIR and NMR analyses. The microstructure of the polybenzoxazine-coated cotton fabrics observed from FE-SEM reveals that formation of rough nanostructure is influenced by molecular structure of monomers. Further, surface analysis shows that poly(C-dda)-coated cotton fabric offers superior water contact angle (WCA = 155° ± 3) with low sliding angle (6°). Also, poly(C-dda)-coated cotton fabric delivers the lowest surface energy (14.1 mN/m) and high resistance against acidic and alkaline media. Subsequently, oil–water separation investigation shows that the poly(C-dda)-coated cotton fabric yields 99% of separation efficiency with flux value of 7200 L/m2h. Thus, the cardanol-based polybenzoxazine-coated cotton fabrics prepared in the present work can find application in the field of oil–water separation due to their superior water-repellent nature. Note de contenu : - EXPERIMENTAL SECTION : Materials - Synthesis of cardanol-based benzoxazine monomers (C-x) - Preparation of benzoxazine-coated cotton fabrics - Characterization - Oil–water separation test - RESULTS AND DISCUSSION : Spectral analysis - Curing behavior of benzoxazine monomers - Spectral analysis of the coated fabrics - Surface properties - Morphology of the polybenzoxazine-coated cotton fabrics - XPS analysis - Oil–water separation DOI : https://doi.org/10.1007/s11998-020-00365-w En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00365-w.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34952 [article]

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Bio-inspired fabrication of superhydrophilic and underwater superoleophobic alumina membranes for highly efficient oil/water separation / Wenjin Zhou in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 2 (03/2021)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 2 (03/2021) . - p. 361-372 Titre : Bio-inspired fabrication of superhydrophilic and underwater superoleophobic alumina membranes for highly efficient oil/water separation Type de document : texte imprimé Auteurs : Wenjin Zhou, Auteur ; Mingyang Zhou, Auteur ; Huapeng Zhang, Auteur ; Hongyan Tang, Auteur Année de publication : 2021 Article en page(s) : p. 361-372 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Alumine Caractérisation Essais (technologie) Essais de résilience Hydrophilie Matériaux -- Propriétés antisalissures Membranes (technologie) Mouillabilité Oléophobie Polyéther imide Séparation huile/eau Index. décimale : 667.9 Revêtements et enduits Résumé : Inspired by fish scales, superhydrophilic and underwater superoleophobic alumina membranes were fabricated in this study. Dopamine deposited on the surface of alumina membranes through immersion over time, and then crosslinking reaction occurred with polyethyleneimine (PEI), which was confirmed by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. It induced the modified layer coated on the membrane surface. Values of water contact angle of the modified alumina membranes were ~ 0° in air. Values of underwater oil contact angle reached 155°, which indicated it was superhydrophilic and underwater superoleophobic. More particles engendered with the increase in the reaction time with PEI, which induced the decrease in the pore sizes and permeation flux. All values of oil rejection were higher than 98.5%. No obvious deterioration of permeation flux could be found. The rejection hardly suffered a sharp decline over 800 min. It indicates that the modified layer can firmly stick to the alumina membranes. Therefore, the as-prepared alumina membrane is promising for practical oil/water separation. Note de contenu : - MATERIALS AND METHODS : Materials and chemicals - Modification of alumina membranes - Characterization and measurement - Abrasion experiment - Separation experiments - RESULTS AND DISCUSSION : Surface morphology of the membranes - Chemical composition on the surface - Surface wettability - Separation performance - Antifouling property of the modified membranes - Table 1 : The modification parameters of the asprepared alumina membranes DOI : https://doi.org/10.1007/s11998-020-00406-4 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00406-4.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35600 [article]

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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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Developing a new superhydrophilic and superoleophobic poly(4-(1-vinyl-1H-imidazol-3-ium-3-yl) butane-1-sulfonate): vinyl imidazole@Perfluorooctanoic acid@SiO2 coated stainless steel mesh for highly efficient, stable, and durable oil/water separation / Mohammad Reza Ghadimi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 2 (03/2021)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 2 (03/2021) . - p. 511-521 Titre : Developing a new superhydrophilic and superoleophobic poly(4-(1-vinyl-1H-imidazol-3-ium-3-yl) butane-1-sulfonate): vinyl imidazole@Perfluorooctanoic acid@SiO2 coated stainless steel mesh for highly efficient, stable, and durable oil/water separation Type de document : texte imprimé Auteurs : Mohammad Reza Ghadimi, Auteur ; Roozbeh Siavash Moakhar, Auteur ; Setare Amirpoor, Auteur ; Mohammad Azad, Auteur ; Abolghasem Dolati, Auteur Année de publication : 2021 Article en page(s) : p. 511-521 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation Nanostructures Polymères Revêtements organiques Séparation huile/eau Index. décimale : 667.9 Revêtements et enduits Résumé : The design and development of efficient approaches for water–oil separation have had widespread interest. Most previously introduced techniques and materials used for development of the successful separation of oily wastewater could not answer all the desired demands, such as being efficient and environmentally and economically friendly. Therefore, in seeking a novel method capable of answering these expectations, surfaces with special wettability were introduced. A novel, reusable, and recyclable superhydrophilic and superoleophobic poly(Vsim-Vim)@PFOA@SiO2 nanocomposite-coated stainless steel mesh was synthesized through a facile preparation process. Since the most important factors of these coatings are their oleophobicity and hydrophilicity values, the water contact angle (WCA) and the oil contact angle (OCA) were measured. The coating indicated the excellent characteristics in which the results showed that WCA was 0°, while OCA was 142°, which confirmed remarkable superhydrophilicity and superoleophobicity, respectively. It is worth mentioning that the coating owes its surface behavior mainly to the finer size of mesh and formation of silica, which causes the higher roughness and better oleophobicity, reduction of the surface energy of the synthesized poly(Vsim-Vim)@SiO2 nanocomposite by PFOA, the formation of hierarchical micro-nanometer scale roughness structures on the coating surface, and stable adhesion of SiO2 nanoparticles into poly(Vsim-Vim). Eventually, superb oil/water separation efficiency of 95% with high stability was attained. This result implied that the fabricated coating is a suitable candidate for water–oil emulsion separation which can potentially be employed in green industrial applications. Also, we believe this approach provides a potential application in controllable oil/water separation in large volumes. Note de contenu : - Table 1 : The sol of poly(Vsim-Vim)@PFOA@SiO2 nanocomposite for 15 mL water solvent - Table 2 : The atomic percentage of substances due to EDS results before and after a durability test in water for 10 days DOI : https://doi.org/10.1007/s11998-020-00420-6 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00420-6.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35611 [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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Fabrication and multifunctional properties of fluorine-free durable nickel stearate based superhydrophobic cotton fabric / Malobi Seth in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 3 (05/2022)  

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Fabrication of fluorine-free superhydrophobic coatings from montmorillonite with mechanical durability and chemical stability / Mengnan Qu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 4 (07/2019)  

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Fabrication of poly(vinylidene fluoride)/graphite heterogeneous porous carbon nanofiber composite mat by electrospraying method for efficient oil-water separation in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 2 (03/2024)  

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Fabrication of superhydrophobic cotton fabric treated with n-dodecyltrimethoxysilane/zirconium oxychloride for highly efficient oil/water separation / Weijing Zhao in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 3 (05-06/2020)  

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Facile fabrication of superhydrophilic and underwater superoleophobic chitosan–polyvinyl alcohol-TiO2 coated copper mesh for efficient oil/water separation / Qiuying You in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 5 (09/2018)  

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Facile fabrication of the durable micro/nano-superhydrophilic/superoleophobic surface through one-step spraying for efficient oil–water separation / Mengfan Luo in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 3 (05-06/2020)  

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Hydrophilicity-hydrophobicity adjustable polymer-modified surfaces from one-step dip-coating method / Xing Liu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 4 (07/2024)  

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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)  

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Preparation of underwater superoleophobic SiO2/CS/PVA coating on 304 stainless-steel mesh with excellent oil-water separation performance and stability / Pu Gong in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 6 (11/2023)  

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UV-curable superhydrophobic organosilicon/silica hybrid coating on cotton fabric for oil–water separation / Shan Gao in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 5 (09/2020)  

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