Blended perfluoropolymer membranes for carbon dioxide separation by miscible and immiscible morphologies

Abstract

Blending is a strategy to improve the permselectivity of gas separation membranes by combining the advantages of two or more polymers. The blending of polymers results in miscible or immiscible morphologies, which have distinctly different properties and performance benefits. Perfluoropolymers, specifically Teflon AF1600 and Hyflon AD60, have unique chemical properties that make them attractive as membranes for natural gas sweetening. Here, blended membranes of these two perfluoropolymers are generated, with miscible and immiscible morphologies achieved by varying the evaporation rate of the solvent. This ability to achieve two different blended morphologies is associated with the different ..