State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
Langmuir. 2012 Apr 3;28(13):5845-9. doi: 10.1021/la300187q. Epub 2012 Mar 22.
The paper reports a novel approach to achieve self-healing surface hydrophobicity. Mesoporous silica is used as the reservoir for hydrophobic molecules, i.e., octadecylamine (ODA), that can release and refresh the surface hydrophobicity consecutively. A polymdopamine layer is used to further encapsulate silica-ODA, providing a reactive layer, governing release of the underlying ODA, and improving the dispersivity of silica nanoparticles in bulk resin. The approach arrives at self-healing (super)hydrophobicity without using any fluoro-containing compounds.
本文报道了一种实现自修复表面疏水性的新方法。介孔硅材料被用作疏水分子，即十八胺（ODA）的储存库，可连续释放和更新表面疏水性。聚多巴胺层进一步包裹硅烷-ODA，提供一个反应层，控制底层 ODA 的释放，并提高纳米二氧化硅在块状树脂中的分散性。该方法在不使用任何含氟化合物的情况下实现了自修复（超）疏水性。
