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Physical properties and morphology of siloxane–polyacrylate dispersion and coating films / Weepol Pramualkijja in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 5 (09/2020)
[article]
Titre : Physical properties and morphology of siloxane–polyacrylate dispersion and coating films Type de document : texte imprimé Auteurs : Weepol Pramualkijja, Auteur ; Nantana Jiratumnukul, Auteur Année de publication : 2020 Article en page(s) : p. 1277–1288 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation
Dispersions et suspensions
Emulsions -- Stabilité
Hydrophobie
Morphologie (matériaux)
Polyacrylates
Polymères à silane modifié
Polymères en émulsion
Revêtements -- Propriétés optiques
Revêtements organiques
Structure chimiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : The aim of this work was to study the morphology and physical properties of siloxane–polyacrylate (SPA) dispersion and coating films. The SPA dispersion was synthesized by seeded emulsion polymerization using two different types of silane coupling agents, i.e., vinyltriethoxysilane (VTES) and 3-(trimethoxysilyl) propyl methacrylate (MPTMS), at 1–9% by weight. The effect of the type and content of silane coupling agent used in the SPA dispersion synthesis on the resulting morphology and physical properties of the obtained SPA dispersion and coating films were studied. The results revealed that SPA dispersion synthesized using VTES exhibited a smaller particle size and a higher stability than those using MPTMS. Furthermore, the hydrophobic surfaces and water repellence of the coating films using VTES in the emulsion were higher than those using MPTMS, due to the smoother surface morphology. Note de contenu : - EXPERIMENTAL : Materials - Preparation of monomer emulsion - Preparation of the seed particles - Growth of the seed particles - Formation of coating films - Characterization of SPA particles and films
- RESULTS AND DISCUSSION : The morphology of emulsion - Emulsion stability - Morphology and element composition of the film surfaces - Chemical structure of siloxane - Hydrophobicity of surfaces - Optical properties - Water repellencyDOI : https://doi.org/10.1007/s11998-020-00346-z En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00346-z.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34573
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 17, N° 5 (09/2020) . - p. 1277–1288[article]Réservation
Réserver ce documentThe preparation of hydrophobic hybrid film coatings from siloxane-modified polyacrylate associated with nano-fumed silica and organo-modified clay / Weepol Pramualkijja in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 5 (09/2022)
[article]
Titre : The preparation of hydrophobic hybrid film coatings from siloxane-modified polyacrylate associated with nano-fumed silica and organo-modified clay Type de document : texte imprimé Auteurs : Weepol Pramualkijja, Auteur ; Nantana Jiratumnukul, Auteur Année de publication : 2022 Article en page(s) : p. 1467-1492 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion
Angle de contact
Angle de glissement
Argile
Caractérisation
Dispersions et suspensions
Hydrophobie
Matériaux hybrides
Morphologie (matériaux)
Polyacrylates
Polymères modifiés siloxane
Revêtements organiques
Rugosité
Structure chimiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : Superhydrophobic hybrid film coatings were prepared from the dispersions of siloxane-modified polyacrylate associated with organo-modified clay (OMC-20A) and hydrophobic-fumed silica (FS-H15) coated on glass and cement boards by a dipping process. The hydrophobicity, surface morphology, surface energy, and surface roughness of the obtained hybrid film coatings (HBFCs) were investigated. The results showed that the hydrophobicity of the obtained HBFCs was related to surface roughness and the roughness profile of the surface. HBFCs obtained using 10 phr OMC-20A with 35 phr FS-H15 in hybrid coatings and fabricated by four dipping provided high roughness surfaces (Rq) at 546.67 nm with a micro-nano-binary structure and a low surface energy at 2.35 mN/m leading to superhydrophobic surfaces on the coated glass and cement boards demonstrating 151.34° and 150.88° water contact angles, respectively. As a result, these HBFCs coated on cement board performed great water repellent and self-cleaning. Note de contenu : - Experimental : Materials
- Preparation of SMPA
- Preparation of the HCs
- Fabrication of the HBFCs
- Characterization
- Results and discussion : SMPA dispersions - Hydrophobicity related with adhesion and hardness - Surface morphology - The chemical structure of HBFCs - Surface energy - Surface roughness and profile of roughness
- Effect of porous substrates : The water contact angle, water repellent and self-cleaning - The durability
- Table 1 : Recipes of the different HC1s
- Table 2 : Recipes of the different HC2s
- Table 3 : Adhesion of the HBFCs
- Table 4 : The sliding angle of HBFC1 and 2s
- Table 5 : The water, EG and glycerol contact angles of the different HCsDOI : https://doi.org/10.1007/s11998-022-00621-1 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00621-1.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38284
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 5 (09/2022) . - p. 1467-1492[article]Réservation
Réserver ce document