Smooth and transparent hydrophilic films showing excellent water sliding property were prepared using a sol-gel solution of 2-[methoxy (ethyleneoxy)<sub>10</sub>propyl]trimethoxysilane (PEG-M) and tetraethoxysilane (TEOS). The resulting films were statically hydrophilic (static water contact angles (CAs) were in the range of 30°–45°), but dynamically hydrophobic properties with low CA hysteresis (5° ± 1°), on which 50 μL of water droplet could move smoothly on an inclined surface (minimum sliding angle was 6°) without pinning and tailing. Due to the formation of this hybrid film on aluminum (Al) substrate, drainage performance during condensation and frosting/defrosting steps markedly improved compared with hydrophilic bare Al or hydrophobic perfluoroalkylsilane monolayer-covered Al surfaces (Figure1).

Smooth and transparent hybrid films showing statically hydrophilic but dynamically hydrophobic behavior

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.