Separability of SO2from SO2/N2mixture through sulfoxide‐modified poly(vinyl alcohol) and cellulose membranes

摘要

AbstractSeparability of SO2from mixtures of SO2and N2gases was studied for membranes of poly(vinyl alcohol) (PVA) and cellulose modified with methyl, ethyl,t‐butyl, and phenyl vinyl sulfoxides. Of these sulfoxide‐modified polymers, the phenyl vinyl sulfoxide‐modified PVA membranes were found to give the best separation of SO2. In the phenyl vinyl sulfoxide modified PVA membranes, the permeability coefficient of SO2increased with sulfoxide content while separability of SO2was maximum at a sulfoxide content of 23.5 mol ; the separation factor of SO2was about 170 at this sulfoxide content. © 1993 John WileySon