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Polymerizable allyl anionic and nonionic emulsifier: synthesis and properties of its emulsion for architectural coating / Ye Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 6 (11/2021)
[article]
Titre : Polymerizable allyl anionic and nonionic emulsifier: synthesis and properties of its emulsion for architectural coating Type de document : texte imprimé Auteurs : Ye Wang, Auteur ; Yi-en Yuan, Auteur ; Xu-min Zheng, Auteur ; Hao-jia Su, Auteur ; Yong-xin Ji, Auteur Année de publication : 2021 Article en page(s) : p. 1579-1590 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation
Colorimétrie
Emulsifiants
Mouillabilité
Polyacryliques
Polymérisation en émulsion
Revêtements en bâtiment:Peinture en bâtiment
Revêtements en phase aqueuse -- Additifs
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : In this manuscript, the polymerizable emulsifiers AEC13-P10 and AEASC13-P10 were synthesized and successfully used to prepare acrylic emulsion for architectural coating through emulsion polymerization. The critical micelle concentration, emulsifying performance, emulsifying power, wettability, and other properties of emulsifiers with different polyether chain lengths, alkyl chain lengths, and emulsions were carefully investigated. The result discloses that AESAC13-P10 features superior performance among these emulsifiers. The color performance and water resistance of the paint prepared with AEASC13-P10 were obviously better than nonreactive emulsifier E-1310SA. Note de contenu : - EXPERIMENTAL SECTION : Materials - Synthesis of polymerizable emulsifiers - Synthesis of emulsions for architectural coating - Characterization of emulsion
- RESULTS AND DISCUSSION : Characterization of the performance of emulsifiers bearing different carbon chain lengths - Characterization of the performance of emulsifiers bearing different polyether chain lengths - Characterization of emulsion for architectural coating with AESAC13-P10
- Table 1 : Photographs of plates coated by color paste containing paints prepared with AESAC13-P10 and E-1310SA
- Table 2 : The color difference of plates coated with paints prepared with AESAC13-P10 and E-1310SADOI : https://doi.org/10.1007/s11998-021-00509-6 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00509-6.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36809
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Code-barres Cote Support Localisation Section Disponibilité 23146 - Périodique Bibliothèque principale Documentaires Disponible Preparation and evaluation of a UV-curing hydrophilic semi-IPN coating for medical guidewires / Wenfei Ding in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 4 (07/2021)
[article]
Titre : Preparation and evaluation of a UV-curing hydrophilic semi-IPN coating for medical guidewires Type de document : texte imprimé Auteurs : Wenfei Ding, Auteur ; Zheng Zhao, Auteur ; Lingmei Jiang, Auteur ; Xigao Jian, Auteur ; Yuan Song, Auteur ; Jinyan Wang, Auteur Année de publication : 2021 Article en page(s) : p. 1027–1035 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion
Biocompatibilité
Caractérisation
Copolymère uréthane acrylate
Copolymères -- Synthèse
Durée de vie (Ingénierie)
Enrobage (technologie)
Essais (technologie)
Hydrophilie
Morphologie (matériaux)
Mouillabilité
Mouillage (chimie des surfaces)
Oligomères
Photoréticulation
Polyéthylene glycol diacrylate
Polyvinylpyrrolidone
Réseaux polymères
Revêtements -- Séchage sous rayonnement ultraviolet
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : Guidewires have crucial roles in intravascular, critical care, and urological applications. In recent years, the demand for guidewires with lower friction surfaces has arisen for medical applications. Among various surface lubrication strategies for guidewires, the most promising is the use of a hydrophilic coating. However, obtaining a hydrophilic coating on guidewires with strong adhesion remains difficult owing to the surface energy difference between the substrate and hydrophilic coating. Herein, we present a UV-curing semi-interpenetrating polymer network coating for medical thermoplastic polyurethane (TPU)-sheathed nitinol guidewires. A polyurethane acrylate (PUA) was synthesized and cured as a transition layer on the TPU substrate to provide strong adhesion. Then, polyvinyl pyrrolidone (PVP) and polyethylene glycol diacrylate (PEGDA) permeated into the PUA layer and cured to form the composite coating. The PUA–PEGDA–PVP coating exhibited excellent lubricity and satisfactory adhesion force. The surface coefficient of friction decreased to approximately 0.02 after modification with the coating, and the coating was stable during long-term soaking in water and repeated friction. In vitro toxicity tests revealed that the coating had good biocompatibility. Thus, our PUA–PEGDA–PVP coating has the potential for application as super-lubricity guidewires and other medical devices. Note de contenu : - EXPERIMENTAL MATERIALS AND METHODS : Materials - Synthesis of PUA oligomer - Preparation of prepolymer solution - Preparation of PUA–PEGDA–PVP coating on TPU panels and guidewires - Characterization - Cross-cut tests - Wetting tests - Friction tests - Durability tests -In vitro cytotoxicity testsHemolytic test
- RESULTS AND DISCUSSION : Synthesis of the PUA oligomer - Preparation and morphology of the PUA–PEGDA–PVP coating - Adhesion and wetting ability - Lubricating performance of PUA–PEGDA–PVP - guidewires - Durability of the PUA–PEGDA–PVP coating - In vitro toxicity and hemolysisDOI : https://doi.org/10.1007/s11998-021-00455-9 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00455-9.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36210
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Code-barres Cote Support Localisation Section Disponibilité 22969 - Périodique Bibliothèque principale Documentaires Disponible Preparation of metallic coatings with reversibly switchable wettability based on plasma spraying technology / Zhengfeng Li in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 9, N° 5 (09/2012)
[article]
Titre : Preparation of metallic coatings with reversibly switchable wettability based on plasma spraying technology Type de document : texte imprimé Auteurs : Zhengfeng Li, Auteur ; Yanjun Zheng, Auteur ; Lishan Cui, Auteur Année de publication : 2012 Article en page(s) : p. 579-587 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acétone L'acétone en chimie, (nom officiel IUPAC propanone, aussi connue sous les noms de diméthylcétone, 2-propanone, propan-2-one et béta-cétopropane), de formule chimique CH3COCH3 est le composé le plus simple de la famille des cétones. C'est un isomère du propanal.L’acétone est un liquide transparent, inflammable, d'odeur caractéristique (plutôt fruitée). Sa température de fusion est de -95,4 °C et celle d'ébullition de 56,53 °C. Elle a une densité relative de 0,819 (à 0 °C). C'est un composé très soluble dans l'eau (c'est une molécule polaire à chaîne carbonée courte), dans l'éthanol et dans l'éther. L'acétone est le dérivé le plus simple de la série des cétones aliphatiques et la présence de la double liaison carbone-oxygène lui confère l'essentiel de sa réactivité.
Hydrophobie
Laurique, Acide
Mouillabilité
Revêtement métallique
Technique des plasmasIndex. décimale : 667.9 Revêtements et enduits Résumé : Plasma spray technology was used for the preparation of metallic coatings with reversibly switchable wettability. By spraying Fe, Cr, and Ni mixture powders with different sizes, a micro/submicro-dual scale morphology was obtained. The resultant metallic coating had a superhydrophilic nature, but could be switched into superhydrophobic by spraying an acetone solution of dodecanoic acid while the sprayed surface remained within a temperature range of 100–200°C, although dodecanoic acid itself has a hydrophilic nature. The obtained superhydrophobic coating remained stable if the temperature was below 200°C. The surface wettability could further be switched between superhydrophilicity and superhydrophobicity within a time-scale of only seconds by heating above 220°C and re-spraying the acetone solution of dodecanoic acid in the temperature range of 100–200°C. A chemisorbed molecular layer of dodecanoic acid was responsible for the decrease of the surface energy, and the Fourier transform infrared spectroscopy (FTIR) results suggested that heating the substrate can greatly facilitate the formation of the chemisorbed layer and preferential orientation of the dodecanoic acid molecule. Note de contenu : - EXPERIMENTAL : Materials - Preparation of the superhydrophobic surface - Evaluation of thermal stability and reversible wettability - Characterization
- RESULTS AND DISCUSSION : Surface morphology of the prepared coating - Chemical composition immediately after APS - Wettability before and after surface modification - Thermal stability and reversible wettabilityDOI : 10.1007/s11998-011-9390-6 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-011-9390-6.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16029
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Code-barres Cote Support Localisation Section Disponibilité 14190 - Périodique Bibliothèque principale Documentaires Disponible Preparation of superhydrophobic titanium surface via the combined modification of hierarchical micro/nanopatterning and fluorination / Zhen Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 3 (05/2022)
[article]
Titre : Preparation of superhydrophobic titanium surface via the combined modification of hierarchical micro/nanopatterning and fluorination Type de document : texte imprimé Auteurs : Zhen Wang, Auteur ; Bing Ren, Auteur Année de publication : 2022 Article en page(s) : p. 967-975 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation
Chimie des surfaces
Dispositifs médicaux
Fluoroalkylsilane
Hydrophobie
Implants médicaux
Infections nosocomiales
Mouillabilité
Revêtements -- Emploi en thérapeutique
Titane
Traîtements de surfaceIndex. décimale : 667.9 Revêtements et enduits Résumé : Adhesion of bacteria and platelets on blood-contact implants and surgical devices is one of the causes of infections and thrombus. A superhydrophobic surface serving as a protective layer can minimize adhesion and contamination due to the low surface energy. The objective of this paper is to construct a superhydrophobic surface on a titanium implant by a combination of a topological structure and chemical coating. First, a micro/nano hierarchical morphology is obtained by sandblasting, acid-etching, and anodic oxidation. Then, a low surface energy coating material (fluoroalkylsilane, as the example case in this study) is used to modify the surface further. The effects of the morphology of micro and/or nanoscales and corresponding fluorination on the wettability are investigated. The results show that a hierarchical surface with microroughness and nanotubes is successfully constructed, and the contact angle (CA) is 44.9°, indicating good hydrophilicity. Interestingly, after being modified by fluoroalkylsilane, the surface converted from hydrophilic to superhydrophobic with a CA of 151.4°. In contrast, the fluorination modification of single micro or nanofeatures cannot achieve superhydrophobicity, indicating that the micro/nanostructures may show a synergistic effect for an efficient fluorination coating later on. Overall, our results demonstrate the feasibility of achieving a superhydrophobic surface via the micro/nano topological patterning and fluorination modification. The proposed method is expected to enrich the preparation technologies of superhydrophobic titanium surfaces. Note de contenu : - MATERIALS AND METHODS : Anodic oxidation parameter settings - Construction of micro/nano hierarchical structures - Fluoroalkylsilane (FAS) modification - Surface characterization
- RESULTS : Effects of electrolyte and voltage during anodic oxidation - Surface morphology - Chemical composition - Surface wettabilityDOI : https://doi.org/10.1007/s11998-021-00576-9 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00576-9.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38090
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Code-barres Cote Support Localisation Section Disponibilité 23605 - Périodique Bibliothèque principale Documentaires Disponible Preparation, properties and application of waterborne hyydroxyl-functional polyurethane/acrylic emulsions in two-component coatings / Guozhang Ma in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 3 (05/2015)
[article]
Titre : Preparation, properties and application of waterborne hyydroxyl-functional polyurethane/acrylic emulsions in two-component coatings Type de document : texte imprimé Auteurs : Guozhang Ma, Auteur ; Taotao Guan, Auteur ; Caiying Hou, Auteur ; Jianbing Wu, Auteur ; Gang Wang, Auteur ; Xuan Ji, Auteur ; Baojun Wang, Auteur Année de publication : 2015 Article en page(s) : p. 505-512 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion
Caractérisation
Copolymère uréthane acrylique
Copolymères en émulsion
Dureté (matériaux)
Matériaux hybrides
Mouillabilité
Revêtements -- Propriétés mécaniques:Peinture -- Propriétés mécaniques
Revêtements bi-composant:Peinture bi-composantIndex. décimale : 667.9 Revêtements et enduits Résumé : A serious of waterborne hydroxyl-functional polyurethane/acrylic (PUA) emulsions for two-component coatings was prepared by copolymerizing different weight ratios of hydroxyethyl acrylate (HEA)/butyl acrylate (BA) with methyl methacrylate and acrylic-terminated polyurethane dispersion via an emulsion process. The results showed that increasing the weight ratio of HEA/BA led to a decrease in the average particle sizes and a narrowing in the particle size distribution, but an increase in the viscosity of their emulsions. Meanwhile, their films showed increased thermal resistance, adhesion on substrate, tensile strength, and hardness, but decreased water resistance and enhanced wettability. When the emulsions were applied in two-component coatings, their water resistance was greatly improved and the wettability was reduced; in addition, their glass transition temperature, thermal stability, adhesion on substrate, tensile strength, and hardness were further increased. It was suggested that hydroxyl groups of PUA can not only engage in the intramolecular and/or intermolecular hydrogen bonding, but also form covalently crosslinked networks with polyisocyanate in their films. Note de contenu : - EXPERIMENTAL : Materials - Preparation of PUA hybrid emulsions - Application in two-component coatings and preparation of their films - Measurements and characterization
- RESULTS AND DISCUSSION : The performance of PUA hybrid emulsions - The FTIR and thermal behaviors of the films - The water wettability and water absorption of the films - The adhesion of the coatings - The mechanical properties and hardness of the filmsDOI : 10.1007/s11998-014-9647-y En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-014-9647-y.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24174
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