Superhydrophobic and Oleophobic Functional Coatings Comprised of Grafted Crystalline Polymers Comprising Perfluoroalkyl Moieties
AssigneeMassachusetts Institute of Technology
InventorsAnna Maria Coclite, Karen K. Gleason, Yujun Shi
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Abstract
Described herein are methods of preparing superhydrophobic and oleophobic surfaces by grafting poly(perfluoroalkyl acrylate) chains on silicon substrates with initiated chemical vapor deposition. The grafting enhances the formation of the crystalline phase. The crystalline structures reduce the polymer chain mobility, resulting in nonwetting surfaces with respect to both water and mineral oil.
Claims25
A composition, wherein the composition comprises a substrate and a coating material, wherein the coating material comprises a polymer;
- and the polymer comprises a plurality of pendant perfluorinated alkyl moieties.
A method of coating a surface of a substrate, comprising the steps of:
- providing a substrate;
- exposing a surface of the substrate to plasma for a first period of time at a first pressure, thereby producing a conditioned surface of the substrate;
- contacting the conditioned surface of the substrate with a vinyl precursor at a first temperature for a second period of time, thereby forming a surface comprising a plurality of pendant vinyl moieties;
- and
- grafting a polymer to the plurality of pendant vinyl moieties, wherein the polymer comprises a plurality of pendant perfluorinated alkyl moieties.
Dependencies are inferred from the claim text.