Method for forming a hydrophobic layer
OwnerKarim Missoum, Julien Bras +1inventors
InventorsKarim Missoum, Julien Bras, Naceur Belgacem
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Abstract
The invention relates to a method for forming a film-forming hydrophobic layer on a substrate, which method includes: fanning an aqueous suspension of cellulose nanofibers, CNF; forming, in water and with a water-immiscible solvent having an evaporation temperature below that of water, a cationic nanoemulsion of a substance forming covalent bonds with the cellulose; mixing the suspension and the nanoemulsion such as to produce a mixture resulting from an adsorption of said substance by the CNF; coating a substrate with said mixture; and proceeding to an annealing suitable for grafting said substance to the CNF.
Claims6
A method of forming a film-forming hydrophobic layer on a substrate, comprising:
- forming an aqueous suspension of cellulose nanofibers, CNFs;
- forming, in water with a water-immiscible solvent having an evaporation temperature lower than that of water, a cationic nanoemulsion of a substance capable of forming covalent bonds with cellulose;
- mixing the suspension and the nanoemulsion to form a mixture resulting from an adsorption of said substance by the CNFs;
- coating a substrate with said mixture;
- and
- performing an anneal capable of grafting said substance on the CNFs.
Dependencies are inferred from the claim text.