کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5184510 | 1381049 | 2011 | 10 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Solution spraying of poly(methyl methacrylate) blends to fabricate microtextured, superoleophobic surfaces Solution spraying of poly(methyl methacrylate) blends to fabricate microtextured, superoleophobic surfaces](/preview/png/5184510.png)
We describe a simple technique to prepare superhydrophobic and superoleophobic microtextured surfaces by spray coating a blend of poly(methyl methacrylate) (PMMA) and the low surface energy molecule 1H,1H,2H,2H-heptadecafluorodecyl polyhedral oligomeric silsesquioxane (fluorodecyl POSS, γsv â 10 mN/m) using an air brush with a pressurized nitrogen stream. Scanning electron micrographs show the formation of microtextured surfaces possessing re-entrant curvature; a critical feature for obtaining liquid repellency with low surface tension liquids. The surface morphology can be tuned systematically from a corpuscular or spherical microstructure to a beads-on-string structure and finally to bundled fibers by controlling the solution concentration and molecular weight of the sprayed polymer. The oleophobicity of the resulting structures is characterized by advancing and receding contact angle measurements with liquids of a range of surface tensions.
Journal: Polymer - Volume 52, Issue 14, 22 June 2011, Pages 3209-3218