Sulfonated poly(aryl ether) membrane including blend with phenol compound
View Patent ↗A membrane comprising a blend of a sulfonated poly(aryl ether) and a phenol compound along with methods for making and using the same. Many additional embodiments are described including applications for such membranes.
1. A membrane comprising a blend of a sulfonated poly(aryl ether) and a phenol compound.
2. The membrane of claim 1 wherein the phenol compound is represented by the Formula (XIV):
wherein R 1 , R 2 , R 3 and R 4 are independently selected from: alkoxy and alkyl having from 1 to 6 carbon atoms, amine, carboxylic acid, halogen, hydrogen, hydroxyl, nitro, phosphonate and thiol.
3. The membrane of claim 2 wherein at least one of R 1 , R 2 , R 3 and R 4 are a hydroxyl and hydrogen.
4. The membrane of claim 2 wherein one of R 1 , R 2 , R 3 and R 4 is a hydroxyl and the remaining are selected from hydrogen and halogen.
5. The membrane of claim 1 wherein the phenol compound is catechol.
6. The membrane of claim 1 wherein the poly(aryl ether) comprises a repeating unit comprising a subunit represented by Formula (I):
7. The membrane of claim 1 wherein the poly(aryl ether) is selected from at least one of: poly(aryl ether) sulfones, poly(aryl ether) ketones, poly(aryl ether) phosphine oxides and poly(aryl ether) nitriles.
8. The membrane of claim 1 wherein the poly(aryl ether) comprises a repeating unit comprising a subunit represented by Formula (II):
9. The membrane of claim 1 wherein from 5 to 50 molar percent of the phenyl groups of the poly(aryl ether) include sulfonic acid moieties.
10. The membrane of claim 1 wherein the membrane is a nano-filtration or reverse osmosis membrane.
11. The membrane of claim 1 wherein the membrane comprises an anisotropic structure.
12. The membrane of claim 1 wherein the membrane comprises a composite structure.
13. The membrane of claim 1 wherein the blend is formed by combining the sulfonated poly(aryl ether) and phenol compound in a weight ratio of from 500:1 to 1:1.
14. A nanofiltration or reverse osmosis membrane comprising a reaction product of a sulfonated polysulfone and a phenol compound combined in a weight ratio of 100:1 to 2:1 wherein the phenol compound is represented by the Formula (XI):
wherein R 1 , R 2 , R 3 and R 4 are independently selected from: alkoxy and alkyl having from 1 to 6 carbon atoms, amine, halogen, hydrogen, hydroxyl and thiol; and
wherein the polysulfone comprises a repeating unit comprising a subunit represented by Formula (II):
wherein from 5 to 50 molar percent of the phenyl groups of the polysulfone include sulfonic acid moieties.
15. A method for making a membrane by combining a sulfonated poly(aryl ether) and a phenol compound with a solvent and casting or extruding the combination to form a membrane.