Advanced poly(aniline-aminosalicylic acid) nanofiber functionalized with modified GO environment friendly coatings on steel surfaces with water resistance and long-term active anticorrosion performance / Meng Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 2 (03/2022)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 2 (03/2022) . - p. 625-642 Titre : Advanced poly(aniline-aminosalicylic acid) nanofiber functionalized with modified GO environment friendly coatings on steel surfaces with water resistance and long-term active anticorrosion performance Type de document : texte imprimé Auteurs : Meng Wang, Auteur ; Fengjuan Xiao, Auteur ; Longfei Kong, Auteur ; Guyu Yin, Auteur ; Changbiao Ni, Auteur ; Xuefei Zhang, Auteur ; Cheng Qian, Auteur ; Lu Yan, Auteur ; Mengya Li, Auteur ; Jun Li, Auteur ; Kaixi Zhou, Auteur Année de publication : 2022 Article en page(s) : p. 625-642 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acier au carbone Anticorrosifs Anticorrosion Caractérisation Copolymérisation Hydrophobie Métaux -- Revêtements protecteurs Nanofibres Polyacide aniline-aminosalicylique Résistance à l'humidité:Résistance à l'eau Revêtements en phase aqueuse Revêtements organiques Index. décimale : 667.9 Revêtements et enduits Résumé : An advanced long-term active corrosion protection coating for carbon steel was proposed using poly(aniline-aminosalicylic acid) nanofiber (PACA-f) covalently linked with cetyltrimethyl ammonium bromide (CTAB)-modified graphene oxide (CTGO). The proton-doped PACA-f functionalized CTGO (PACA-f/CTGO) exhibits excellent hydrophobicity and outstanding water resistance in waterborne epoxy polymer (WEP) coatings and better compatibility with WEP due to the formation of organic–inorganic networks. PACA-f/CTGO composite coating has a self-repairing function and shows superior corrosion resistance on Q235 steel. The surface-corrosion inhibition of PACA-f/CTGO on steel was investigated by molecular dynamics simulation(MD) which confirmed the chemical adsorption of the PACA-f/CTGO on the steel surface. The excellent water resistance and anticorrosion property of PACA-f/CTGO are ascribed to the high hydrophobicity of the hybrid coatings, the formation of intelligent passivation layer after the corrosive medium invading, and the barrier performance of CTGO. Note de contenu : - EXPERIMENTAL SECTION : Materials - Preparation of PACA-f/CTGO composite - Preparation of waterborne anticorrosive coating samples - Molecular dynamics (MD) simulations - Characterization - RESULTS AND DISCUSSION : Morphological studies of CTGO, PACA-f and PACA-f/CTGO composite - Elemental composition and chemical state of the samples - XRD and UV–Vis spectroscopy analyses of PACA-f/CTGO composites - Electrochemical activity - Cross-sectional morphology of coating - Corrosion behavior DOI : https://doi.org/10.1007/s11998-021-00553-2 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00553-2.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37293 [article]

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Quaternary ammonium antimicrobial agents and their application in antifouling coatings : a review / Shuting Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 1 (01/2024)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 21, N° 1 (01/2024) . - p. 87-103 Titre : Quaternary ammonium antimicrobial agents and their application in antifouling coatings : a review Type de document : texte imprimé Auteurs : Shuting Wang, Auteur ; Biwei Qiu, Auteur ; Jiangao Shi, Auteur ; Meng Wang, Auteur Année de publication : 2024 Article en page(s) : p. 87-103 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Ammoniums quaternaires Antimicrobiens Composés inorganiques Copolymères greffés Polydiméthylsiloxane Le polydiméthylsiloxane —[O-Si(CH3)2]n—, ou poly(diméthylsiloxane) selon la nomenclature systématique, communément appelé PDMS ou diméthicone, est un polymère organominéral de la famille des siloxanes souvent présent dans les shampoings. On l'y ajoute pour augmenter le volume des cheveux mais il peut également aller boucher les pores du cuir chevelu et rendre les cheveux gras. C'est une des raisons pour lesquelles se laver les cheveux tous les jours est très déconseillé avec un shampooing contenant des silicones. Il existe également de l'amodiméthicone, qui est un dérivé du diméthicone. Le polydiméthylsiloxane est un additif alimentaire (E900), utilisé comme antimoussant dans les boissons (Coca-Cola BlāK). La chaîne de poly(diméthylsiloxane) forme également la structure de base des huiles et des caoutchoucs silicones. Polyuréthanes Revêtements antisalissures:Peinture antisalissures Index. décimale : 667.9 Revêtements et enduits Résumé : The construction of coatings on the surface of materials to avoid contamination is a common means of antifouling that has been extensively and systematically studied. Currently, adding biocide components to the coating to kill bacteria and other adherent microorganisms on the material's surface is the most effective way. However, the loss of effective bactericidal components can cause the coating to lose its long-lasting antimicrobial performance. To solve this problem, the use of organic polymeric antimicrobial agent quaternary ammonium salts came into being. The quaternary ammonium salt component can be chemically bonded to the polymer matrix in the coating, effectively avoiding the loss of the active ingredient. Quaternary ammonium salts mainly achieve bactericidal purposes through interaction with cell membranes, and their antimicrobial activity is closely related to the molecular structure. This article mainly summarizes the relevant research progress of quaternary ammonium salt compounds and divides their application in antifouling coatings into two major categories: quaternary ammonium salt grafted polymer matrix and quaternary ammonium salt compounded with inorganic particles through different doping methods of quaternary ammonium salt in antifouling coatings, summarizing the relevant research in recent years. Note de contenu : - RESEARCH PROGRESS OF QUATERNARY AMMONIUM ANTIMICROBIAL AGENTS : Classification of quaternary ammonium antimicrobial agents - Antibacterial mechanism of quaternary ammonium salt antimicrobial agent - Constitutive relationship of quaternary ammonium antimicrobial agents SUMMARY OF RESEARCH ON ANTIFOULING ON COATINGS WITH QUATERNARY AMMONIUM SALTS : Quaternary ammonium salt-grafted polymers - Quaternary ammonium salt compounded with inorganic particles - Table 1 : Structure of polymer matrix grafted quaternary ammonium salts DOI : https://doi.org/10.1007/s11998-023-00825-z En ligne : https://drive.google.com/file/d/19gtpLuxj4lwnyaj4Jb1WNI126-afVbzm/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40437 [article]

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Synthesis and characterization of organosilicon-modified self-matting waterborne polyurethane with excellent wear resistance / Pengfei Niu 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. 1963-1976 Titre : Synthesis and characterization of organosilicon-modified self-matting waterborne polyurethane with excellent wear resistance Type de document : texte imprimé Auteurs : Pengfei Niu, Auteur ; Weichen Pan, Auteur ; Wei Wang, Auteur ; Meng Wang, Auteur ; Bao Zhang, Auteur ; Junfeng Yang, Auteur ; Xiaohong Peng, Auteur Année de publication : 2023 Article en page(s) : p. 1963-1976 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse morphologique Caractérisation Matériaux auto-mattants Polymères -- Synthèse Polymères en émulsion Polyuréthanes Résistance à l'usure Index. décimale : 667.9 Revêtements et enduits Résumé : Self-matting waterborne polyurethane (WPU) with a rough surface suffers from poor wear resistance, which inevitably hinders its service span. Here, wear-resistant and self-matting WPU resin was prepared via using hydroxypropyl-terminated polydimethylsiloxane (PDMS) in the preparation of prepolymer and N-2-aminoethyl-3-aminopropyltrimethoxysilane (KH-792) as a post-chain extender. The effects of PDMS, 2, 2-Bis(hydroxymethyl)propionic acid (DMPA), and KH-792 on its morphology, particle size, gloss, wear resistance, and hydrophilicity of WPU were also investigated. The gloss of WPU coatings was found to be negatively correlated with the amount of DMPA. Moreover, the matting effect and the wear resistance of WPU were significantly enhanced by the introduction of PDMS and KH-792. When the content of PDMS, DMPA, and KH-792 was 6 wt%, 2.2 wt%, and 40 mol% respectively, the gloss was 3.2 GU, and the wear mass loss was only 6.6 mg, which was 64% lower than that without silicone-modified. This work could provide a new idea for the preparation of wear-resistant and self-matting coatings. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of silicone-modified self-matting WPU - Characterization - RESULTS AND DISCUSSION : FTIR characterization - NMR characterization - Effect of the DMPA content - Effect of the KH-792 content - SEM analysis - 3D morphology characterization DOI : https://doi.org/10.1007/s11998-023-00790-7 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-023-00790-7.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40174 [article]

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