US 2011/0236762 A1 · POROUS MEMBRANES AND METHODS OF MAKING THE SAME

Abstract

The instant disclosure relates to porous membranes and methods of making the same. An example of the method includes exposing a polymeric film (including a polymer and i) a gel-forming polymer, ii) ceramic particles, or iii) combinations of i and ii) established on a carrier belt to a non-solvent or a slightly miscible solvent of a polymer in the polymeric film, thereby inducing formation of a porous structure in the polymeric film. The method further includes transporting the polymeric film on the carrier belt into a bath of a non-solvent or a slightly miscible solvent of the polymer for a predetermined time thereby finalizing the formation of the porous structure and forming the porous membrane. The porous membrane is removed from the non-solvent or slightly miscible solvent bath.

Claims24

Dependent claims

A method for making a porous membrane, comprising:

exposing a polymeric film established on a carrier belt to a non-solvent or a slightly miscible solvent of a polymer in the polymeric film, thereby inducing formation of a porous structure in the polymeric film, the polymeric film including a polymer and i) a gel-forming polymer, ii) ceramic particles, or iii) combinations of i and ii;
transporting the polymeric film on the carrier belt into a bath of a non-solvent or a slightly miscible solvent of the polymer for a predetermined time, thereby finalizing the formation of the porous structure and forming the porous membrane;
and
removing the porous membrane from the non-solvent or slightly miscible solvent bath.

1 more element

Dependencies are inferred from the claim text.

Porous membranes and methods of making the same

Life of this patent

Porous membranes and methods of making the same

Life of this patent

Abstract

Claims24