Electroluminescence of ion-exchange polymeric membranes in the swollen state

The first results on the electroluminescence of the MK-40L, MK-40K, MF-4SK, MA-40L, MA-41L, MA-40K, and MA-41K ion-exchange polymeric membranes in the swollen state are reported. It was found that electroluminescence had the character of flashes. Intensity and time characteristics of electroluminescence were determined over the range of NaCl solution concentrations from 0 to 0.1 M. The special features of electroluminescence from the ion-exchange membranes were determined from their photographs. It was found that the membranes in the air-dry state did not exhibit electroluminescence.