HIGH THROUGHPUT MEMBRANE

摘要

Membranes having first and second porous portions, wherein the first portion has a more open pore structure than the second portion, wherein the first porous portion includes pores prepared by removing introduced particles, as well as methods of making and using the membranes, are disclosed.

主权项

1. A polymeric microporous membrane comprising:
(a) a first microporous surface; (b) a second microporous surface; and (c) a hulk between the first surface and the second surface; wherein the bulk comprises a first porous portion including the first microporous surface, and a second porous portion including the second microporous surface; and
(i) the first portion comprises at least first and second sets of different controlled pore structures, the first set having a larger average pore size than the second set; and(ii) the second portion comprises a third set of a controlled pore structures, wherein the third set of pore structures has a smaller average pore size than the first set.