ИСТИНА

In the course of study of pervaporation of surfactant – surface-inactive component solutions through the asymmetric membrane from polyvinyltrimethylsilane with an active homogeneous layer a new effect of temporal structure emergence is discovered, which consists in pronounced coherent autooscillations of permeability and selectivity. It is known that autooscillations occur when there exists a nonperiodical energy source, and in the system itself there exist subsystems with dynamic feedback. In this case the energy source is the internal stress field in the membrane active layer, and the subsystems are mass transfer channels across the continuous structure of the polymer and along the micropores that appear due to Rehbinder effect (spatial structure). Experimental proof of adequacy of the suggested mechanism to real processes is given.