Corrosion-resistant super-amphiphobic (PVDF-fnAl2O3) coating with thermal and mechanical stability / Nadiah Ghazali in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 2 (03/2024)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 21, N° 2 (03/2024) . - p. 589-599 Titre : Corrosion-resistant super-amphiphobic (PVDF-fnAl2O3) coating with thermal and mechanical stability Type de document : texte imprimé Auteurs : Nadiah Ghazali, Auteur ; Wan Jefrey Basirun, Auteur ; Azmi Mohammed Nor, Auteur ; Mohd Rafie Johan, Auteur ; Fariza Abdul Rahman, Auteur Année de publication : 2024 Article en page(s) : p. 589-599 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Alumine Amphiphobie Anticorrosifs Anticorrosion Caractérisation Fluoroalkylsilane Hydrophobie Mouillabilité Polyfluorure de vinylidène Pyrolyse La pyrolyse est la décomposition ou thermolyse d'un composé organique par la chaleur pour obtenir d'autres produits (gaz et matière) qu'il ne contenait pas. L'opération est réalisée en l'absence d'oxygène ou en atmosphère pauvre en oxygène pour éviter l'oxydation et la combustion (L’opération ne produit donc pas de flamme). Il s'agit du premier stade de transformation thermique après la déshydratation. Elle permet généralement d'obtenir un solide carboné, une huile et un gaz. Elle débute à un niveau de température relativement bas (à partir de 200 °C) et se poursuit jusqu'à 1 000 °C environ. Selon la température, la proportion des trois composés résultants est différente. Revêtements -- Propriétés mécaniques Revêtements -- Propriétés thermiques Revêtements organiques Index. décimale : 667.9 Revêtements et enduits Résumé : The thermal and mechanical stability of amphiphobic anti-corrosion coating is evaluated in this study. The coating was fabricated from functionalized nano Al2O3 and polyvinylidene fluoride (PVDF) and analyzed using FTIR, DSC, TGA, XRD, abrasion and cross-hatched adhesion test analyses. DSC and XRD revealed the presence of multiple crystalline phases of PVDF in the coating which eventually increased the crystallinity and melting temperature. The removal of the CFx chain from alkylsilane occurred at elevated temperatures, which decreased the repellent characteristic. Overall, the coating demonstrated good thermal stability until the temperature of 450°C with the ISO class 2 adhesion. Note de contenu : - EXPERIMENTAL METHODS : Materials - Experimental procedure - Characterization - RESULTS AND DISCUSSION : Coating wettability - Corrosion rate - Chemical composition and phase evaluation - Thermal properties - Mechanical properties - Table 1 : The PVDF and FAS characteristic bands and the corresponding PVDF crystalline phases - Table 2 : The melting temperature (Tm), melting enthalpy (H) and the calculated degree of crystallinity (Xc) for the single and double heating cycles - Table 3 : The cross-hatched test performed on three different points for PVDF base and coating sample En ligne : https://drive.google.com/file/d/144homJFiYz54fN8noyr-smA7iLTySSyf/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40779 [article]

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A facile and low-cost preparation of durable amphiphobic coatings with fluoride–silica@poly(methacrylic acid) hybrid nanocomposites / Zheng-Bai Zhao in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 6 (11/2017)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 6 (11/2017) . - p. 1369-1380 Titre : A facile and low-cost preparation of durable amphiphobic coatings with fluoride–silica@poly(methacrylic acid) hybrid nanocomposites Type de document : texte imprimé Auteurs : Zheng-Bai Zhao, Auteur ; Da-Ming Zhang, Auteur ; Li Tai, Auteur ; Peng-Fei Jiang, Auteur ; Yong Jiang, Auteur Année de publication : 2017 Article en page(s) : p. 1369-1380 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Amphiphobie Hydrophobie Matériaux hybrides Oléophobie Revêtements Index. décimale : 667.9 Revêtements et enduits Résumé : Poor robustness, high cost and complicated preparation are the main barriers to the large-scale industrial application of amphiphobic coatings. A facile and low-cost method to fabricate durable amphiphobic coatings is reported in this work. The coatings were composed of top and bottom paints. The top paint was prepared by the F–Si@PMAA hybrid nanocomposites dispersion. The hybrid nanocomposites with dual structure were prepared via the co-condensation reaction of tetraethoxysilane (TEOS) and 1H,1H,2H,2H-Perfluorodecyl triethoxysilane (HDFTES) on the surface of the presynthesized PMAA nanoparticles in ethanol dispersion. The bottom one was a type of inexpensive car refinishing paint. The resulting coatings could be sprayed onto different substrates. All the coated substrates exhibited good amphiphobicity with superhydrophobicity with the water contact angle greater than 150°, water roll-off angle less than 4°, and high oleophobicity with the oil contact angle greater than 130°. Moreover, all of the prepared coatings exhibited great robustness after water jetting, sand abrasion, and knife scratching. This method can be an effective strategy for fabricating amphiphobic surfaces for practical industrial applications. Note de contenu : - EXPERIMENTAL : Materials - Preparation of F–Si@PMAA hybrid nanocomposites - Fabrication of amphiphobic films by spray coating - Measurement of surface morphology - Characterization of the rough dual structure of F–Si@PMAA hybrid nanocomposites - Measurement of water/oil wetting properties of the amphiphobic coatings - Measurement of mechanical robustness of the amphiphobic coatings - RESULTS AND DISCUSSIONS : Preparation of amphiphobic coatings - Durability of amphiphobic coatings - Micromorphology of hybrid nanocomposites and the influence on the amphiphobicity of the coatings - DOI : 10.1007/s11998-017-9940-7 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-017-9940-7.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29641 [article]

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Facile fabrication of durable superamphiphobic PET fabrics / Xuan Zhou in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 3 (05-06/2020)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 17, N° 3 (05-06/2020) . - p. 711–718 Titre : Facile fabrication of durable superamphiphobic PET fabrics Type de document : texte imprimé Auteurs : Xuan Zhou, Auteur ; Si Sun, Auteur ; Chuan Zhang, Auteur ; Xiao-Yu Wang, Auteur ; Yan-Li Li, Auteur ; Yong Jiang, Auteur Année de publication : 2020 Article en page(s) : p. 711–718 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Amphiphobie Auto-nettoyage Caractérisation Durée de vie (Ingénierie) Fibres textiles -- Propriétés chimiques Fibres textiles -- Propriétés mécaniques Hydrolyse Polyéthylène téréphtalate Revêtements organiques Textiles et tissus synthétiques Index. décimale : 667.9 Revêtements et enduits Résumé : Superamphiphobic coatings/materials are important for a wide variety of applications, but the majority of these coatings/materials still suffer from poor durability. Therefore, multifunctional superamphiphobic coatings/materials with strong mechanical and chemical stability are highly desired. Herein, a simple and flexible approach to produce multifunctional superamphiphobic poly(ethylene terephthalate) (PET) textiles was reported. First, dual micro/nanostructures on the PET fabric surface are constructed by hydrolysis of trimethoxymethylsilane, N-octyltriethoxysilane, and trimethylchlorosilane, and further modified by 1H,1H,2H,2H-perfluorodecyltriethoxysilane and poly(vinylidene fluoride). The as-obtained superamphiphobic PET fabrics show high liquid repellency to water, oil, organic liquids, and strong acid or alkali solutions, exhibiting a water contact angle (WCA) of 161° and an oil contact angle (OCA) of 156°. Meanwhile, the superamphiphobic PET fabrics show strong abrasion resistance; even after 180-cm consistent abrasion, the WCA still maintains 148° and the OCA maintains 140°. Importantly, the fabrics maintain their excellent superamphiphobic property after long-term UV irradiation or ultrasonic treatment, respectively. Because the prepared fabrics have multifunctional features and are easy to fabricate with low cost, they show great potential for self-cleaning, antifouling, anti-icing, drug reduction, corrosion resistance, and protective uniforms. Note de contenu : - EXPERIMENTAL SECTION : Materials - Preparation of superamphiphobic solution - Dip coating for superamphiphobic fabrics - Characterization - Measurement of chemical and mechanical stability of the coatings - RESULTS AND DISCUSSION : Characterization of the superamphiphobic PET fabrics - Surface wettability and self-cleaning performance of the modified fabrics - Durability of superamphiphobic coatings on fabric - UV-durable and chemical stable superamphiphobicity DOI : https://doi.org/10.1007/s11998-019-00289-0 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00289-0.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34101 [article]

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Preparation of amphiphobically modified poly(vinyl alcohol) film by fluoroalkyl end-capped vinyltrimethoxysilane oligomer / Yuta Aomi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 3 (05/2019)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 16, N° 3 (05/2019) . - p. 651-660 Titre : Preparation of amphiphobically modified poly(vinyl alcohol) film by fluoroalkyl end-capped vinyltrimethoxysilane oligomer Type de document : texte imprimé Auteurs : Yuta Aomi, Auteur ; Hideo Sawada, Auteur Année de publication : 2019 Article en page(s) : p. 651-660 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Alcool polyvinylique Amphiphobie Diffractométrie de rayons X Fluoropolymères Oligomères Résistance à l'humidité:Résistance à l'eau Revêtements organiques Stabilité thermique Vinyltriméthoxysilane Index. décimale : 667.9 Revêtements et enduits Résumé : Hydrophilic poly(vinyl alcohol) (PVA) was chemically modified by using fluoroalkyl end-capped vinyltrimethoxysilane oligomer [RF-(VM)n-RF] to lead the PVA/RF-(VM)n-RF composite films. The PVA/RF-(VM)n-RF composite film obtained under non-catalytic conditions was found to provide the water-soluble property; however, the acidic conditions enabled the composite film to afford no solubility toward water, giving an amphiphobic property on both the surface and reverse sides just after the deposit of an oil or water droplet. RF-(VM)n-RF oligomer was also applied to the fabrication of the PVA/RF-(VM)n-RF/B(OH)3 composite film by using the RF-(VM)n-RF/B(OH)3 nanocomposites, which were prepared by the composite reaction of RF-(VM)n-RF oligomer with boric acid. It was demonstrated that the PVA/RF-(VM)n-RF/B(OH)3 composite film obtained by the interaction of the corresponding nanocomposites with PVA under acidic conditions can afford the perfect water-resistance ability even after immersion of this film into water for 30 min to give the amphiphobic property on both the surface and reverse sides, although the corresponding PVA/RF-(VM)n-RF composite film and the pristine PVA film provided the swelling behavior toward water, respectively. Thermal gravimetric analyses (TGA) and differential thermal analyses (DTA) measurements showed that the PVA/RF-(VM)n-RF/B(OH)3 composite film can give a higher thermal stability than that of the RF-(VM)n-RF/PVA composite film and the pristine PVA film. DOI : 10.1007/s11998-018-0148-2 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-018-0148-2.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32579 [article]

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Robust patterned superoleophobic platform for efficient water harvesting / Pan Li in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 6 (11/2023)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 6 (11/2023) . - p. 2019-2029 Titre : Robust patterned superoleophobic platform for efficient water harvesting Type de document : texte imprimé Auteurs : Pan Li, Auteur ; Chenyang Zhao, Auteur ; Shan Peng, Auteur Année de publication : 2023 Article en page(s) : p. 2019-2029 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Amphiphobie Brouillard Eau - Récupération Hydrophilie Morphologie (matériaux) Oléophobie Procédés de fabrication Index. décimale : 667.9 Revêtements et enduits Résumé : With the development of global industry and the increase of population, the shortage of freshwater resources has become a serious global challenge to the sustainable development of human society, prompting in-depth research on advanced water-harvesting technologies. However, the existing methods have many defects, such as easy pollution, insufficient water transportation speed, low water collection efficiency, complex preparation process, expensive raw materials, and so on. Here, inspired by natural organisms, such as beetles and cactus thorns, a new patterned surface combining a superamphiphobic region and a triangular fluorosurfactant (capstone FS50)-modified hydrophilic region has been designed for efficient and rapid water collection and condensation. The superamphiphobic part has an efficient water transmission capacity. On the one hand, owing to a good hydrophilic property, the FS50-modified part efficiently collects fog droplets that are further condensed into much larger water droplets. On the other hand, many large water drops condensed on the superamphiphobic region easily roll onto the hydrophilic FS50-modified surface, and form much larger droplets when combined with the original ones. The patterned surface achieves a very large water collection rate (WCR) of 20.6 mg min−1 cm−2, which is much larger than others reported in previous papers, while it is 1.5 and 1.3 times than that of single superamphiphobic and FS50-modified surfaces. Since both the patterns show superior oil repellency, it presents good resistance to organic pollution, resulting in very superior chemical stability and recyclability. Even after water collection for 60 cycles, the patterned surface can still reach a WCR value of 18 mg min−1 cm−2. The patterned surfaces also collect acid fog, alkali fog, and hot water fog when their WCR values are 20.1, 19.8, and 20.5 mg min−1 cm−2, respectively. This work has found a new patterned superoleophobic surface for efficient water collection, which achieves robust mechanical durability and chemical stability. Note de contenu : - MATERIALS AND METHODS : Materials - Fabrication methods of various samples - RESULTS AND DISCUSSION : Fabrication process of the patterned surface - Morphology and composition of the patterned surface - Wettability summary and demonstration of the patterned surface - Water collection processes of diverse samples - Various critical parameters about water collection capability of diverse specimens - Designed origin of patterned surface and mechanisms of water collection behaviors for diverse specimens - Mechanical durability and chemical stability of superamphiphobic surfaces - Acid fog, alkali fog, and hot water collection processes by the patterned surfaces - Table 1 : Summary of CAs and SAs of various samples DOI : https://doi.org/10.1007/s11998-023-00796-1 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-023-00796-1.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40178 [article]

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Robust superamphiphobic aluminum surfaces : fabrication and investigation / Z. E. Zhao in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 6 (11/2019)  

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Superhydrophobic surfaces : a review on fundamentals, applications, and challenges / Jeya Jeevahan in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 2 (03/2018)  

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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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