Polymer membrane for proton driven ion transport
AssigneeUniversity of Victoria
InventorThomas Fyles
Life of this patent
Estimating the term…
Abstract
A functional membrane is provided for proton-driven ion transport. It consists essentially of a blend of two components. The first component is an active polymer having cation-binding sites, the cation binding sites being provided, e.g., by a crown ether, a cryptand or an acyclic complexone with an ionizable acidic site, e.g., a carboxylic acid, a sulfonic acid and a phenol, such active polymer being incorporated into a polymer backbone via a spacer component. The second component is a support polymer, e.g. a polyaramide, a polysulfone, or a polypip-erazine-fumaramide.
Claims15
A functional membrane for proton-driven ion transport consisting essentially of a blend of
- (a) an active polymer having cation-binding sites, said cation binding sites being provided by a member selected from the group consisting of a crown ether, a cryptand and an acyclic complexone each of said members having an ionizable acidic site which is provided by a member selected from the group consisting of a carboxylic acid, a sulfonic acid and a phenol, said active polymer being incorporated into a polymer backbone via a spacer component;
- and
- (b) a support polymer selected from the group consisting of polyaramides, polysulfones, and polypiperazine-fumaramides;
- thereby to provide a membrane whose constituents consist of said components (a) and (b).
A functional membrane for proton-driven ion transport consisting essentially of a blend of:
- (a) an active polymer having cation-binding sites, said cation binding sites being provided by polymeric crown ether whose components consist of a crown ether component, a spacer component and a polymer backbone component, said crown ether component bearing a carboxylic acid group or, together with said polymer backbone component, producing a carboxylate group, said crown ether component comprising a copolymer of a crown ether selected from the group consisting of:
- ##STR9## with a member selected from the group consisting of a polymeric acid chloride, and a polymeric cyclic anhydride, said active polymer being incorporated into a polymer backbone via a spacer component;
- and
- (b) a support polymer selected from the group consisting of polyaramides, polysulfones, and polypiperazine-fumaramides;
- thereby to provide a membrane whose constituents consist of said components (a) and (b).
Dependencies are inferred from the claim text.