MEMBRANE WITH PLURALITY OF CHARGES

摘要

Membranes comprising continuous zones of negative, neutral, and positive charges in a single porous layer, as well as devices comprising the membranes, and methods of making the membranes, are disclosed.

主权项

1. A microporous membrane comprising
(a) a single layer having
(i) a first microporous surface;(ii) a second microporous surface; and,(iii) a bulk between the first microporous surface and the second microporous surface, wherein the bulk has a first charge continuous zone, a neutral charge continuous zone, and a second charge continuous zone,
wherein the neutral continuous zone is interposed between the first charge continuous zone and the second charge continuous zone, and whereinthe first charge continuous zone and the second charge continuous zone have opposing charges, the membrane having a portion where the first charge continuous zone contacts the neutral continuous zone, and a portion where the second charge continuous zone contacts the neutral continuous zone, wherein the portions are arranged generally parallel to each other.