Patent ID: 8747752

Claim:
A dryer polymer substance adapted to pervaporate water, water vapor or both from a gas while maintaining the concentration of CO 2 , O 2 or both in said gas, the polymer substance comprising: an ammonium persulfate (APS) hydrophilized, surface activated porous support member having a plurality of pores, wherein the porous support member comprises polyether sulphone (PES); and wherein at least a portion of the pores comprise grafted cross-linked co-polymer formed from [2-(methacryloxy)ethyl]trimethylammonium chloride (MAETAC) and 2-acrylamido-2-methyl-1-propanesulfonic acid and N,N′-methylenebisacrylamide (MBAA) in a mole ratio of 1000:800:75.