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)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 21, N° 4 (07/2024) . - p. 1203-1215 Titre : Hydrophilicity-hydrophobicity adjustable polymer-modified surfaces from one-step dip-coating method Type de document : texte imprimé Auteurs : Xing Liu, Auteur ; Jiliang Zhang, Auteur ; Mochou Liu, Auteur ; Xia Han, Auteur ; Honglai Liu, Auteur Année de publication : 2024 Article en page(s) : p. 1203-1215 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Copolymères Copolymères -- Synthèse Dip-coating Equilibre hydrophile-hydrophobe Mouillabilité Mouillage (chimie des surfaces) Revêtements antisalissures:Peinture antisalissures Revêtements organiques Séparation huile/eau Index. décimale : 667.9 Revêtements et enduits Résumé : The wettability feature is a fundamental and crucial property of solid surfaces which can be easily obtained and adjusted by polymer surface treatment thanks to the wide range of properties of polymers and feasible processing methods. In this study, a simple method was developed to modify the surface of materials using amphiphilic copolymers with zwitterionic groups. Random copolymers poly(dopamine methacrylamide-co-2-(dimethylamino)ethyl methacrylate-co-sulfobetaine methacrylate) (P(DMA-co-DMAEMA-co-SBMA), PDDS) were synthesized by a “one-pot polymerization” method and successfully grafted onto the surface of the substrate by “dip-coating”. As the composition of the copolymer can be easily changed, four copolymers with fixed adhesive DMA content and various SBMA contents were obtained where the hydrophilic-hydrophobic balance can be adjusted. The more hydrophobic the copolymer is, the denser and smoother the copolymer coating on silica surface will be obtained. Thus, the wettability of the copolymer modified surface can be controlled by the synergistic effect of adjusting the composition and surface morphology of the copolymer coatings. At the microscopic level, increasing the proportion of SBMA monomer could significantly enhance the hydrophilicity of the coatings, thereby decreasing the adhesive force between modified surface and colloidal probe and improving the antifouling performance of the modified surfaces. At the macroscopic level, owing to their hydrophilicity and underwater superoleophobicity, both PD5D20S75-mesh and PD5S95-mesh exhibited excellent oil/water separation performances with separation efficiency of 97.2% and 98.8%, and water flux of 40692 and 1528 L m−2 h−1, respectively. These results provide a reference for the development of hydrophilic surface materials in different applications. Note de contenu : - EXPERIMENTAL SECTION : Materials - Synthesis of P(DMA-co-DMAEMA-co-SBMA) copolymers - Surface modification - Characterizations - RESULTS AND DISCUSSION : Synthesis of random copolymers - Surface wettability and antifouling performance of copolymer modified substrates - Table 1 : Surface properties of copolymer coatings on silicon wafer Oil-water separation performance of modified stainless steel mesh DOI : https://doi.org/10.1007/s11998-023-00883-3 En ligne : https://drive.google.com/file/d/1VJTv7ARC6e4KKwTWXbQvSA1ZOlsfIAba/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41291 [article]

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