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- W2097025045 abstract "IR and UV absorption spectra show that selenopentathionate anions are sorbed into the polyamide 6 films if they are treated with 0.025-0.2 mol/dm 3 solutions of potassium selenopentathionate, K 2 SeS 4 O 6 , in 0.1 mol/dm 3 HCl at 30 and 50°C. The concentration of sorbed selenopentathionate ions increases with the increase of the duration of treatment, concentration and temperature of SeS 4 O 2- 6 solution. The mixed copper sulfide-copper selenide, Cu x S-Cu y Se, layers are formed in the surface of polyamide 6 after the treatment of chalcogenized polymer with Cu(II/I) salt solution (10 min, 78°C): the anions SeS 4 O 2- 6 containing selenium and sulfur atoms of low oxidation state react with the copper(II/I) ions. The conditions of a polymer initial chalcogenation determine the concentration ofcopper and the composition ofchalcogenide layer: the concentration of copper in the chalcogenide layer increases with the increase of initial chalcogenation duration, temperature and the concentration of solution. The results of XRD confirmed the formation of mixed copper sulfide-copper selenide layers on the surface of polyamide 6: four copper sulfide phases, chalcocite, Cu 2 S, digenite, Cu 1.8 S, djurleite, Cu 1.9375 S, anilite, Cu 1.75 S, and five copper selenide phases, bellidoite, Cu 2 Se, umangite, Cu 3 Se 2 , klockmannite, CuSe, krutaite, CuSe 2 and Cu 2 Se x , were identified in the layers. The phase composition of layers changes depending on the conditions of the polymer initial treatment in a K 2 SeS 4 O 6 solution. The chemical composition of Cu x S-Cu y Se layers was characterized by energy dispersive spectroscopy XPS. XPS results confirmed the formation of mixed copper chalcogenides of various phases on the surface of a polyamide 6. At room temperature, electrical sheet resistance of the layers vary from 12.2 Q/D to 4.7 MΩ/□. The determined regularities enable formation of the layers of copper sulfide-copper selenide on the surface of a polyamide 6 of desirable composition and conductivity by the sorption method using the solutions of potassium selenopentathionate as precursor." @default.
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- W2097025045 date "2009-01-01" @default.
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- W2097025045 title "Formation and Characterization of Mixed Copper Sulfide ― Copper Telluride Layers on the Polyamide 6 Surface" @default.
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