Preparation and Some Properties of Cu-Te-S Thin Films on the Polyamide (PA) Surface

The process and results of the formation of thin Cu-Te-S films on the polyamide (PA) surface are described. For clarifying the influence of various factors (the concentration of the initial solution of sodium telluropentathionate dihydrate, Na2TeS4O6_2H2O, pH, an exposure time and temperature) the kinetics of the sorption-diffusion of tellurium and sulfur into PA from freshly prepared solutions of sodium telluropentathionate was studied. Some structural properties and electrical resistance's values of obtained films have been investigated also. Cu-Te-S polymer composites indicate p-type properties of electrical conductivity and have electrical resistance in the range of 1.5_103-4.0_103 k/ to 3-5 k/ after to 2-3 h of an exposure and 1.0-1.5 k/ after 24-72 h of exposure in 0.01-0.1 mol dm-3 solutions of Na2TeS4O6.