2026/07/29 by E. Yu. Safronova, I. A. Stenina, D. Yu. Voropaeva +1
Chemistry · Materials Science · #Adsorption, diffusion, and thermodynamic properties of materials #Aerogels and thermal insulation #Glass properties and applications
paper · doi:10.1134/s0036023626601492
crossref issued 2026/07/29 · crossref published 2026/07/29 · crossref published-online 2026/07/29 · openalex publication_date 2026/07/29 · crossref created 2026/07/29 · openalex created_date 2026/07/30 · openalex updated_date 2026/07/31 · crossref deposited 2026/07/31 · crossref indexed 2026/07/31
Abstract Materials based on hydrated silica containing organic groups of varying nature and size were obtained, including hydrophobic hydrocarbon groups (vinyl- and dodecyl-) and fluorine-containing groups (3,3,3-fluoropropyl- and 1H, 1H, 2H, 2H-perfluorodecyl-), as well as hydrocarbon groups containing proton-acceptor groups (3-aminopropyl- and 3-(phenylamino)propyl-). The thermal stability of the resulting materials was demonstrated up to temperatures of 300°C. The introduction of small hydrophobic fragments onto the silica surface provides highly dispersed materials with specific surface areas reaching up to 675 m2/g. Increasing the size of the hydrocarbon or perfluorinated groups leads to the formation of superhydrophobic materials exhibiting water contact angles as high as 174°. It was shown that the incorporation of silica modified with 1H, 1H, 2H, 2H-perfluorodecyl groups into a styrene–ethylene–butylene–styrene block copolymer matrix enhances the hydrophobicity of the resulting films from 105° to 137°.