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

摘要

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,Na_2TeS_4O_6 dentre dot 2H_2O,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 dentre dot 10~3-4.0 dentre dot 10~3 kOMEGA/square to 3-5 kOMEGA/square after to 2-3 h of an exposure and 1.0-1.5 kOMEGA/square after 24-72 h of exposure in 0.01-0.1 mol dm~(-3)solutions of Na_2TeS_4O_6.