Preparation of hydrophobic surfaces
AssigneeTechnion Research & Development Foundation Limited
InventorsBoaz Pokroy, Iryna Polishchuk, Elena Prudnikov, Ester Segal
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Abstract
A process of depositing a hydrophobic or superhydrophobic film on a surface of a substrate, effected by spraying onto the substrate's surface a solution comprising a fatty acid and an organic solvent, is provided. Substrates and articles-of-manufacturing containing the substrates, having a hydrophobic or superhydrophobic coating/film deposited thereon, obtainable or prepared by the process, are also provided. The process is usable for reducing a load of a pathogenic microorganism and/or for preventing biofilm formation on and/or in the substrates or articles-of-manufacturing containing same.
Claims12
A process of depositing a hydrophobic or superhydrophobic layer on at least a portion of a surface of a substrate, the process comprising spraying onto said at least a portion of said surface a solution comprising a free fatty acid and an organic solvent, thereby depositing a hydrophobic or superhydrophobic film on said at least a portion of said surface,
- wherein said fatty acid is a saturated fatty acid of at least 12 carbon atoms in length,
- wherein said organic solvent has an evaporation rate higher than 3 relative to n-butyl acetate,
- wherein said hydrophobic or superhydrophobic layer is edible,
- and wherein said at least a portion of said surface that has said layer deposited thereon features:
- a static contact angle with water of at least 90°;
- and/or
- roughness of at least 0.2 micrometer(s);
- and/or
- a porosity that ranges from 10 to 85% by volume.
Dependencies are inferred from the claim text.