Determination and comparison of ideal and practical selectivity coefficients of membranes containing different conductive polymers

In series of published works, usually, the ideal coefficients of selectivity is used as an indicator for separation performance of conducting polymer membranes. The main goal of the presented paper was to determine the relation between the ideal and practical selectivity coefficients of the investigated series of conductive polymer membranes, both layered and composite one, and assessed whether it is possible to rely only on the values of ideal selectivity coefficient for estimation of the membrane separation capacity. The results showed that high values of ideal membrane selectivity coefficients are necessary but not a sufficient indicator for evaluation of the real selectivity of membranes made from conducting polymers.