A durable and environmentally-friendly superhydrophobic coatings for liquid-food residue reduction were prepared by using stearic acid (SA) modified organic montmorillonite (SA@OMMT) and poly(dimethylsiloxane) (PDMS). Due to the natural hydrophobicity of SAs, SA@OMMT provides low surface energy as well as roughness for the coating. PDMS not only provided low surface energy in the coating but also contributed to the bonding of SA@OMMT as a result of its high adhesive properties. In addition, PDMS has good physical properties after curing, which can effectively improve the physical properties and durability of a superhydrophobic coating by the self-assembly method using a PDMS/n-hexane solution. For 1 wt.% SA@OMMT and 5 wt.% PDMS, the resulting SA@OMMT/PDMS (SOP) coating showed the water contact angle (WCA) and water sliding angle (WSA) of 156.3°and 2°, respectively. The prepared coatings have good physical and chemical stability, and they still have superhydrophobicity after physical abrasion tests and exposure to the corrosion solutions. In the meanwhile, the prepared coating also has flexibility and superhydrophobicity after bending and folding. Finally, the coating surface shows highly effective antifouling ability to liquid and solid pollutants. The coating can be applied against different substrates and has potential application in the field of liquid-food residue reduction.

中文翻译：

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一种耐用且环保的超疏水涂层，具有自清洁、防污性能，可减少液体食品残留

使用硬脂酸 (SA) 改性有机蒙脱石 (SA@OMMT) 和聚二甲基硅氧烷 (PDMS) 制备了一种耐用且环保的超疏水涂层，用于减少液体食品残留。由于 SA 的天然疏水性，SA@OMMT 为涂层提供了低表面能和粗糙度。PDMS 不仅在涂层中提供低表面能，而且由于其高粘合性能，还有助于 SA@OMMT 的粘合。此外，PDMS固化后具有良好的物理性能，可有效提高PDMS/正己烷溶液自组装法超疏水涂层的物理性能和耐久性。对于 1 wt.% SA@OMMT 和 5 wt.% PDMS，所得 SA@OMMT/PDMS (SOP) 涂层的水接触角 (WCA) 和水滑动角 (WSA) 均为 156。分别为 3° 和 2°。所制备的涂层具有良好的物理和化学稳定性，在物理磨损试验和腐蚀溶液暴露后仍具有超疏水性。同时，所制备的涂层在弯曲折叠后还具有柔韧性和超疏水性。最后，涂层表面对液体和固体污染物表现出高效的防污能力。该涂层可应用于不同的基材，在减少液体食品残留方面具有潜在的应用前景。涂层表面对液体和固体污染物表现出高效的防污能力。该涂层可应用于不同的基材，在减少液体食品残留方面具有潜在的应用前景。涂层表面对液体和固体污染物表现出高效的防污能力。该涂层可应用于不同的基材，在减少液体食品残留方面具有潜在的应用前景。