Fabrication and properties of polysilsesquioxane-based trilayer core–shell structure latex coatings with fluorinated polyacrylate and silica nanocomposite as the shell layer / Jiawei Li in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 5 (09/2018)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 15, N° 5 (09/2018) . - p. 1077-1088 Titre : Fabrication and properties of polysilsesquioxane-based trilayer core–shell structure latex coatings with fluorinated polyacrylate and silica nanocomposite as the shell layer Type de document : texte imprimé Auteurs : Jiawei Li, Auteur ; Shenjie Zhong, Auteur ; Wiaojie Yan ; Weixiang Li ; Lingmin Yi Année de publication : 2018 Article en page(s) : p. 1077-1088 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Core-Shell Couches minces Dioxyde de silicium Fluoropolymères Fourier, Spectroscopie infrarouge à transformée de Granulométrie Humidité -- Absorption:Eau -- Absorption Hydrophobie Latex Mesure Microscopie à force atomique Morphologie (matériaux) Mouillabilité Nanoparticules Polyacrylates Polymères -- Synthèse Stabilité thermique Index. décimale : 667.9 Revêtements et enduits Résumé : Polysilsesquioxanes (PSQ)-based core–shell fluorinated polyacrylate/silica hybrid latex coatings were synthesized with PSQ latex particles as the seeds, and methyl methacrylate, butyl acrylate, 3-(trimethoxysilyl) propyl methacrylate (MPS)-modified SiO2 nanoparticles (NPs), 1H,1H,2H,2H-perfluorooctyl methacrylate (PFOMA) as the shell monomers by emulsifier-free miniemulsion polymerization. The results of Fourier transform IR spectroscopy, transmission electron microscopy, and dynamic light scattering suggested the obtained hybrid particles emerged with trilayer core–shell pattern. Contact angle analysis, x-ray photoelectron spectroscopy, and atom force microscopy results indicated that the hybrid film containing SiO2 NPs showed higher hydrophobicity, lower surface free energy and water absorption, in comparison with the control system (without SiO2 NPs). Compared with the control system, the hybrid latex film containing SiO2 NPs in the fluorinated polyacrylate shell layer showed the higher content of fluorine atoms and a rougher morphology on the film surface. Additionally, thermogravimetric analysis demonstrated the enhanced thermostability of PSQ-based nanosilica composite fluorinated polyacrylate latex film. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of core-shell fluorinated polyacrylate/SiO2 NPs hybrid latex - Preparation of the latex film - Application of hybrid latex on fabrics - Measurements - RESULTS AND DISCUSSION : FTIR analysis - Particle morphologies and particle size of latexes - Surface property of latex films - Water absorption of latex fims - Surface wettability of the modified fabrics - XPS and AFM analysis - Thermal stability of latex films DOI : 10.1007/s11998-018-0044-9 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-018-0044-9.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31136 [article]

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One-step mini-emulsion copolymerisation of waterborne polysiloxane-modified polyacrylate/pigment hybrid latex and its application in textile pigment printing / Fenping Wang in COLORATION TECHNOLOGY, Vol. 138, N° 3 (06/2022)  

[article]  inCOLORATION TECHNOLOGY > Vol. 138, N° 3 (06/2022) . - p. 291-303 Titre : One-step mini-emulsion copolymerisation of waterborne polysiloxane-modified polyacrylate/pigment hybrid latex and its application in textile pigment printing Type de document : texte imprimé Auteurs : Fenping Wang, Auteur ; Jiawei Li, Auteur ; Lin Lu, Auteur ; Xiaofei Yan, Auteur ; Dongming Qi, Auteur ; Zhijie Chen, Auteur Année de publication : 2022 Article en page(s) : p. 291-303 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation Copolymérisation Douceur (toucher) Fibres polyesters Hydrophobie Impression pigmentaire Latex Miniémulsions Pigments hybrides Polyacrylates Polyéthylène téréphtalate Polymérisation en émulsion Silicones Les silicones, ou polysiloxanes, sont des composés inorganiques formés d'une chaine silicium-oxygène (...-Si-O-Si-O-Si-O-...) sur laquelle des groupes se fixent, sur les atomes de silicium. Certains groupes organiques peuvent être utilisés pour relier entre elles plusieurs de ces chaines (...-Si-O-...). Le type le plus courant est le poly(diméthylsiloxane) linéaire ou PDMS. Le second groupe en importance de matériaux en silicone est celui des résines de silicone, formées par des oligosiloxanes ramifiés ou en forme de cage (wiki). Solidité de la couleur Index. décimale : 667.3 Teinture et impression des tissus Résumé : Textile pigment printing and dyeing is an environmentally friendly and sustainable clean production technology that has the advantages of saving water, saving energy and reducing pollution. However, the application of this technology in industry is severely limited because of the disadvantages of stiff hand feeling, poor wet rubbing fastness and other performance properties of traditional pigment-printed fabric. To improve the pigment printing performance, a novel method of preparing hybrid pigment latex containing silicone by one-step mini-emulsion copolymerisation of silicone and acrylic monomers was explored in this work. Here, a comprehensive study of the effect of the ratio of silicone and acrylic, and the silicone component of alkoxysilane and cyclic siloxanes, on the properties of hybrid latex films and pigment-printed polyester fibres, was conducted. It was found that, with an increasing amount of silicone, the hybrid pigment latex films gradually enhanced the water resistance, flexibility and thermal stability properties. Those water repellencies and smooth feeling properties were achieved by incorporating the hydrophobicity and the flexibility of the copolymer chains of silicone. The waterborne self-adhesive hybrid pigment containing silicone can be directly applied for pigment printing of polyester fabric. Compared with the control printing system (without silicone), it not only exhibited an equivalent colour strength, but also improved the colour fastness and hand feel. Based on these results, this approach may provide insights into the rational design of waterborne self-adhesive textile hybrid pigments for high-quality printing performance. Note de contenu : - EXPERIMENTAL : Chemicals and materials - Sample preparation - Characterisations - RESULTS AND DISCUSSION : The morphology and size distribution of hybrid pigment latex - FTIR analysis and the phase structure of hybrid latex films - Hydrophobicity of hybrid pigment latex films - Thermal and mechanical properties of hybrid pigment latex films - Textile pigment printing properties of self-adhesive Si-PAcr/PB latex - Table 1 : Recipes of PAcr/PB hybrid latex - Table 2 : Properties of PAcr/PB and Si-PAcr/PB hybrid latex - Table 3 : Different siloxane content and properties of hybrid latex for the prepared samples - Table 4 : Properties of polyester fabrics printed with PAcr/PB and Si-PAcr/PB hybrid latex DOI : https://doi.org/10.1111/cote.12591 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12591 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37858 [article]

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