Abstract
The surface, structure and electrochemical properties of a polypropylene track membranes with a polymer layer obtained by electron beam dispersion of polytetrafluoroethylene in vacuum has been studied. It has been found that the deposition of the polytetrafluoroethylene layer on the surface leads to the creation of composite membranes that exhibit in electrolyte solutions conductance asymmetry, the rectification effect similar to the p – n junction in semiconductors. It is shown that the observed effect of conductivity asymmetry is caused by a significant decrease in the diameter of pores in the deposited polymer layer and a change in the pore geometry, same as existence of an interface between the initial membrane and polytetrafluoroethylene layer.
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