EPR AND NMR-STUDY OF THE EFFECT OF HYDROL YSIS CONDITIONS ON THE STRUCTURE OF PERFLUORINATED SULFOCATIONITE MEMBRANES

The effect of hydrolysis conditions on the submicrostructure formation in perfluorinated sulfonyl fluoride copolymer was studied by EPR and pulsed magnetic field gradient NMR techniques. It was established that hydrolysis of the initial copolymer in morpholine at 2 degrees C lead s to the formation of a branched channel membrane structure with unifo rmly distributed ionogenic groups in the transport channel for the tra nsmembrane transfer of ions and neutral molecules. An increase in the hydrolysis temperature leads to a growth in the channel size at the ex pense of increasing number of regions excluded from the general transp ort channel system.