초록 ▼

The present invention is a single-ply immobilized liquid membrane comprising an aqueous liquid membrane immobilized within a hydrophobic microporous support, and a method of preparing such an immobilized liquid membrane. The present invention also includes a method of preparing an ultrathin single-p

The present invention is a single-ply immobilized liquid membrane comprising an aqueous liquid membrane immobilized within a hydrophobic microporous support, and a method of preparing such an immobilized liquid membrane. The present invention also includes a method of preparing an ultrathin single-ply immobilized liquid membrane.

대표청구항 ▼

A method for the preparation of a single-ply, ultrathin immobilized liquid membrane having high positive pressure difference stability, said method comprising the steps of: (a) contacting a single-ply hydrophobic microporous support with an aqueous solution containing from about 40 to about 95 perce

A method for the preparation of a single-ply, ultrathin immobilized liquid membrane having high positive pressure difference stability, said method comprising the steps of: (a) contacting a single-ply hydrophobic microporous support with an aqueous solution containing from about 40 to about 95 percent by volume of an exchange component until steady state is achieved; (b) removing said support from said aqueous solution; (c) contacting said support with water until steady state is achieved; (d) removing said support from said water; (e) repeating steps (a)-(d) until a water membrane is immobilized within substantially the entire thickness of said support; and (f) partially reducing the thickness of said membrane immobilized within said support by (i) establishing a moisture partial pressure gradient between at least one surface of said support and a gas in contact with said one surface, and (ii) maintaining said moisture partial pressure gradient for a time sufficient to cause a portion of said liquid membrane to evaporate thereby partially reducing its thickness.