Solution spraying of poly(methyl methacrylate) blends to fabricate microtextured, superoleophobic surfaces
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McKinley_Solution spraying.pdf
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1.12 MB
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Checksum (MD5)
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Author(s)
Srinivasan, Siddarth
Chhatre, Shreerang S.
Mabry, Joseph M.
Cohen, Robert E.
McKinley, Gareth H.
Date Issued
May 2011
Journal
Polymer
Publisher
Elsevier
Citation
Srinivasan, Siddarth, Shreerang S. Chhatre, Joseph M. Mabry, Robert E. Cohen, and Gareth H. McKinley. “Solution Spraying of Poly(methyl Methacrylate) Blends to Fabricate Microtextured, Superoleophobic Surfaces.” Polymer 52, no. 14 (June 2011): 3209–18.
Version
Author's final manuscript
Abstract
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, γ[subscript sv] ≈ 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.
MIT Department
Massachusetts Institute of Technology. Department of Chemical Engineering
Massachusetts Institute of Technology. Department of Mechanical Engineering
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Creative Commons Attribution-Noncommercial-NoDerivatives
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DOI of Published Version
https://doi.org/10.1016/j.polymer.2011.05.008
