Materials Chemistry Centre, Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K.
Langmuir. 2023 Jun 6;39(22):7731-7740. doi: 10.1021/acs.langmuir.3c00554. Epub 2023 May 22.
Robust fluorine-free superhydrophobic films were produced from a mixture of two fatty acids (stearic acid and palmitic acid), SiO nanoparticles, and polydimethylsiloxane. These simple and nontoxic compounds were deposited via aerosol-assisted chemical vapor deposition to provide the rough topography required for superhydrophobicity, formed through island growth of the aggregates. The optimum conditions for well-adhered superhydrophobic films produced films with a highly textured morphology, which possessed a water contact angle of 162 ± 2° and a sliding angle of <5°. Superhydrophobicity was maintained after ultraviolet exposure (14 days at 365 nm), heat treatment (5 h at 300 °C and 5 h at 400 °C), 300 tape peel cycles, and exposure to ethanol and toluene (5 h each).
由两种脂肪酸（硬脂酸和棕榈酸）、SiO2 纳米粒子和聚二甲基硅氧烷组成的无氟坚固超疏水膜。这些简单且无毒的化合物通过气溶胶辅助化学气相沉积进行沉积，以提供超疏水性所需的粗糙形貌，这是通过团聚体的岛屿生长形成的。在最佳条件下制得的附着性良好的超疏水膜具有高度纹理化的形貌，其水接触角为 162±2°，滑动角<5°。超疏水性在紫外线照射（365nm 下 14 天）、热处理（300°C 5 小时和 400°C 5 小时）、300 次胶带剥离循环以及暴露于乙醇和甲苯（各 5 小时）后仍能保持。
