Formation and characterization of conductive thin layers of copper sulfide (CuxS) on the surface of polyethylene and polyamide by the use of higher polythionic acids

Formation of mixed copper sulphide and silver sulphide layers on low density polyethylene film

“…n > Then sulphurized PE was treated with a solution of copper(I-II) salt and electrically conductive copper sulphide layers were obtained. However, we did not obtain silver sulphide layers in the surface of PE when sulphurized PE was treated with an 3 AgNO solution. In this paper, we report a simple route to obtain copper sulphide and silver sulphide layers on the surface of low density polyethylene film by using a solution of a polythionic acid as the precursor of sulphur.…”

“…Further the PE samples with Cu S x layers were immersed in an 3 AgNO solution. After the treatment the samples turned from brown or even black into greyish black.…”

“…in the obtained layers were determined using an atomic absorption spectrometer Perkin-Elmer 503. The PE films modified with sulphide layers were mineralized with concentrated 3 HNO . For the conditions described above, the sensitivity of the AAS method is about 0.09 µg/mL copper and 0.06 µg/mL silver for 1% absorption [7].…”

“…Analysis of the diffraction patterns of samples treated in the 3 AgNO solution showed that some peaks could be indexed to acanthite and silver-3 C. Peaks of anilite and talnakhite also were detected in diffraction patterns.…”

“…We previously reported the preparation and characterization of copper sulphide layers on polyethylene film (PE) of various densities by the sorption-diffusion method [2,3]. As the precursor of sulphur we used solutions of polythionic acids, 2 6 H S O .…”