Preparation and properties of antibacterial styrene-acrylic emulsion containing thiazole structure and its application as coating / Xiaopei Zhou in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 5 (09/2022)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 5 (09/2022) . - p. 1365-1379 Titre : Preparation and properties of antibacterial styrene-acrylic emulsion containing thiazole structure and its application as coating Type de document : texte imprimé Auteurs : Xiaopei Zhou, Auteur ; Fang Liu, Auteur ; Shaobo Xiong, Auteur ; Furong Zhou, Auteur ; Hui Xiang, Auteur ; Jingwei He, Auteur Année de publication : 2022 Article en page(s) : p. 1365-1379 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antibactériens Copolymère styrène acrylique Polymérisation en émulsion Revêtements en phase aqueuse -- Additifs Revêtements organiques Index. décimale : 667.9 Revêtements et enduits Résumé : A series of antibacterial styrene-acrylic emulsions (SA-Mn, n = 5, 10, 15, 20) with different contents of 5-(methacryloxy-2-ethoxyaminocarbonyl)methyl-thiazole (MEMT) were successfully synthesized, and SA-M20 was used to prepare a water-based antibacterial coating (PSA-M20). The structures of the films (SA-Mn-F) obtained from SA-Mn were analyzed by Fourier-transform infrared spectrometry using the attenuated total reflectance model (FTIR-ATR). The effects of the MEMT content on the properties of the emulsions and related films were investigated in the aspects of particle size, thermal stability, pencil hardness, adhesive force grade, water resistance, and surface morphology. The results showed that all the emulsions or related films had acceptable properties. The antibacterial and antibacterial durability tests showed that films obtained from emulsions SA-M15, SA-M20, and the coating PSA-M20 had strong and durable antibacterial activity against E. coli and S. aureus. Note de contenu : - EXPERIMENTAL : Materials - Preparation of antibacterial styrene-acrylic emulsion (SA-Mn) - Preparation of antibacterial water-based coating (PSA-M20) - Preparation of films of SA-Mn emulsion (SA-Mn-F), PSA-M20 coating (PSA-M20-F), and PSA-M0 coating (PSA-M0-F) - Characterizations - RESULTS AND DISCUSSION : The ATR-FTIR spectra of SA-Mn-Fs - Properties of SA-Mn emulsions - Properties of SA-Mn-F - Thermal properties of St-BA-AA-MEMT copolymers - Surface morphology of SA-Mn-Fs - Properties of antibacterial water-based coating PSA-M20 - Antibacterial activities of SA-Mn-F, PSA-M20-F and PSA-M0-F - Antibacterial durability of SA-Mn-Fs, PSA-M20-F, and PSA-M0-F - Table 1 : Chemical compositions of synthesized antibacterial styrene-acrylic emulsions with 5-(methacryloxy-2-ethoxyaminocarbonyl)-methyl-thiazole (MEMT) (SA-Mn) - Table 2 : Properties of SA-Mn emulsion (n = 0, 5, 10, 15, 20) - Table 3 : Properties of SA-Mn-Fs (n = 0, 5, 10, 15, 20) - Table 4 : Characteristic temperatures of thermal decomposition and the glass transition temperature (Tg) of St-BA-AA-MEMT copolymers with different content of MEMT - Table 5 : Properties of antibacterial water-based coating PSA-M20 - Table 6 : The results of antibacterial rates of films (SA-Mn-F, PSA-M20-F, PSA-M0-F) against E. coli and S. aureus - Table 7 : Antibacterial rates of films (SA-M0-F, SA-M15-F, SA-M20-F, PSA-M20-F, PSA-M0-F) after being irradiated by a 253.7-nm UV light for 100 h against E. coli and S. aureus - Table 8 : Antibacterial rate of films (SA-M0-F, SA-M15-F, SA-M20-F, PSA-M20-F, PSA-M0-F) after being immersed in water for 7 days against E. coli and S. aureus DOI : https://doi.org/10.1007/s11998-022-00589-4 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00589-4.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38276 [article]

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Preparation of dendritic–linear polyether-modified silica sol and its application in coatings / Ping Yu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 6 (11/2016)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 13, N° 6 (11/2016) . - p. 963-971 Titre : Preparation of dendritic–linear polyether-modified silica sol and its application in coatings Type de document : texte imprimé Auteurs : Ping Yu, Auteur ; Xingxing Zhu, Auteur ; Jidong Gao, Auteur ; Shengying Wu, Auteur ; Lei Tang, Auteur ; Shaobo Xiong, Auteur ; Limin Wang, Auteur ; Gang Zou, Auteur Année de publication : 2016 Article en page(s) : p. 963-971 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Morphologie (matériaux) Polyéthers Polymères dendritiques Résistance aux taches Revêtements -- Additifs:Peinture -- Additifs Silice La silice est la forme naturelle du dioxyde de silicium (SiO2) qui entre dans la composition de nombreux minéraux. La silice existe à l'état libre sous différentes formes cristallines ou amorphes et à l'état combiné dans les silicates, les groupes SiO2 étant alors liés à d'autres atomes (Al : Aluminium, Fe : Fer, Mg : Magnésium, Ca : Calcium, Na : Sodium, K : Potassium...). Les silicates sont les constituants principaux du manteau et de l'écorce terrestre. La silice libre est également très abondante dans la nature, sous forme de quartz, de calcédoine et de terre de diatomée. La silice représente 60,6 % de la masse de la croûte terrestre continentale. Index. décimale : 667.9 Revêtements et enduits Résumé : Dendritic–linear polyether-modified silica sol (DLPS) was synthesized using diethylenetriamine, methyl acrylate, epoxy-terminated polyether, triethoxysilane, and silica sol in five steps. The prepared sol was stable and transparent. DLPS was characterized by Fourier transform infrared spectroscopy, thermogravimetric analysis, and particle size distribution analysis. Subsequently, DLPS was examined as a stain-resistant additive in (paint) coatings. The surface of the sample coatings with and without DLPS additive was examined by scanning electron microscopy, energy-dispersive spectrometry analysis, and contact angle analysis. The results showed that the stain-resistant additive appeared on the surface of the coating, which made the surface more compact and hydrophilic. The performance of the stain-resistant additive was examined in commercial outdoor emulsion coatings (WB200). The result showed that the presence of the stain-resistant additive could enhance the stain resistance performance of paint. Furthermore, the stain resistance performance improved with increasing amounts of additive. Specifically, the stain resistance performance of paint improved by 40.63% in the presence of 6 wt% DLPS. Therefore, the current findings demonstrate the importance of DLPS in advancing progress and application in the paint coating industry. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of dendritic–linear polyether-modified silica sol (DLPS) - Preparation of sample boards and stain resistance test (Preparation of sample boards - Stain resistance test - Characterization) - RESULTS AND DISCUSSION : FTIR studies - TGA studies - Particle size distribution analysis - Surface wettability - Stain resistance studies - Surface morphology analysis - Chemical composition analysis DOI : 10.1007/s11998-016-9807-3 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-016-9807-3.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27243 [article]

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