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Chemija / Chemistry

ISSN 0235-7216
ISSN 2424-4538 (online)

2013 m. Nr. 3

Deposition and characterization of silver sulfide layers on the polypropylene film surface
Valentina KRYLOVA

Thin films of Ag2S were deposited at room temperature on non-oriented isotactic polypropylene substrates immersed in a bath mixture containing aqueous solutions of silver nitrate, AgNO3, for silver ion source, sodium thiosulfate, Na2S2O3, for sulfide ion source and as a complexing agent, and nitric acid, HNO3, for pH adjustment. Film samples were characterised by X-ray photoelectron spectroscopy (XPS) and chemical analysis. XPS analysis confirmed that a layer of Ag2S was formed on the surface of the polypropylene film. The films were studied for their electrical conductivity and the results showed that the measured electrical sheet resistance depended on Ag : S ratio. A non-destructive millimeter wave analysis showed that distribution of Ag2S particles according to resistivity distribution on the PP samples area is homogenous.

Keywords: silver sulfide layer, chemical bath deposition, polypropylene, XPS

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