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Equilibrium and transport properties of ion-exchange electrodialytic membranes before and after their processing in model solution containing dimethylacetamide were investigated in LiCl solutions. Values of the membranes transport structural parameters reflecting structural and kinetic characteristics of the two-phase system were derived on the basis of electroconductivity and diffusion permeability concentration dependences of investigated membranes. Aprotic solvent influence on the properties of heterogeneous membranes and their transport structural parameters ware discovered.

The obtained concentration dependencies of electroconductivity and diffusion permeability of the heterogeneous ion-exchange membranes in common with the calculated transport structural parameters showed that aprotic solvent practically has no influence on the properties of Table 2 Transport structural parameters of membranes before and after their processing in model solution Membranes Before processing of samples in model solution After processing of samples in model solution 1 (/f MK-40 MA-41 MA-40 a kiso (S/m) G (m mol(l s(l) 0.19 0.10 0.10 0.33 0.50 0.39 0.287 0.704 0.399 2.2 )/10(17 3.8 )/10(14 7.9 )/10(15 1 (/f a kiso (S/m) G (m5 mol(l s(l ) 0.19 0.10 0.10 0.33 0.52 0.40 0.284 0.827 0.455 2.8 )/10(17 2.7 )/10(14 6.1 )/10(15 cation-exchange membrane MK-40 and improves the exploitation characteristics of electrodialytic anion-exchange membranes MA-40 and MA-41 increasing their electroconductivity and decreasing their diffusion permeability.