Patent ID: 11920002
Assignee: ARIZONA BOARD OF REGENTS ON BEHALF OF ARIZONA STATE UNIVERSITY
Field: Chemical engineering (Chemistry)
Classification: CPC C  B  Y | IPC B  C

Claim 12:
13. A method of forming a membrane, the method comprising:
dissolving a polysulfone homopolymer and a zwitterionic poly(arylene ether sulfone-co-sulfobetaine arylene ether sulfone) copolymer in a solvent to yield a mixture;
disposing the mixture on a substrate;
at least partially drying the mixture on the substrate to yield a membrane precursor on the substrate; and
immersing the substrate in a coagulation bath to yield the membrane, wherein the membrane is separate from the substrate,
wherein the zwitterionic poly(arylene ether sulfone-co-sulfobetaine arylene ether sulfone) copolymer is represented by the formula:, wherein each Z independently represents a single bond, a substituted carbon atom, or —SO2—, and x and y represent mole percent of the arylene ether sulfone component and the sulfobetaine arylene ether sulfone component, respectively, and x+y=100.