Back to results
US 2026/0001043 A1Published application
Filtration membranes and method of manufacture thereof
OwnerSean Muir, William Lindinventors
Life of this patent
Estimating the term…
Abstract
A filtration membrane includes a porous membrane that comprises a polymer and a derivatized polydopamine layer disposed on one or both sides of the porous membrane. The derivatized polydopamine layer is disposed on the porous membrane in the presence of an oxidizing agent.
Claims10
A filtration membrane comprising:
- a porous membrane that comprises a polymer;
- a derivatized polydopamine layer disposed on one or both sides of the porous membrane;
- where the derivatized polydopamine layer is disposed on the porous membrane in the presence of an oxidizing agent.
A method of coating a porous membrane, comprising:
- disposing a porous membrane in a solution comprising a dopamine monomer, a buffer, an oxidizing agent and a solvent in a reactor;
- where the dopamine monomer, the buffer and the oxidizing agent are gradually added to the reactor;
- forming a polydopamine layer on the porous membrane;
- and
- derivatizing the polydopamine layer with an amine, a thiol, a carboxylic acid, or a combination thereof.
2 more elements
A method of purifying a liquid comprising:
- passing a liquid through a filtration membrane;
- where the filtration membrane comprises:
- a porous membrane;
- a derivatized polydopamine layer disposed on one or both sides of the porous membrane;
- where the derivatized polydopamine layer is disposed on the porous membrane in the presence of an oxidizing agent;
- and
- removing ionic and particulate impurities from the liquid.
4 more elements
Dependencies are inferred from the claim text.