Surfactant treatment of polyaramide gas separation membranes

Details Surfactant treatment of polyaramide gas separation membranes Surfactant treatment of polyaramide gas separation membranes

1989-10-10

1991-07-16

Spitzer, Robert

Gas separation

Means within gas stream for conducting concentrate to collector

055068, 055158, B01D 5322, B01D 7156

Patent

active

050321498

ABSTRACT:
A process for improving the permselectivity of asymmetric polyaramide gas separation membranes is disclosed. The process involves contacting the membrane with a dilute solution of a surfactant in a solvent which preferably swells the membrane material. The surfactants are anionic, nonionic or amphoteric with the fluorinated nonionic surfactants being preferred.

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