Adsorption properties of synthesised polystyrol-polyanyline composites

Abstract

In this paper, the results of the study of the possibility of creating a polymeric composite material based on crosslinked polystyrene granules (polymer matrix – ”host”) and polyaniline (a polymer – ”guest”) were presented and the results of the adsorption study of silver ions on the surface of the synthesized polymer composite were presented. Under conditions of suspension polymerization, we synthesized micro-sized polystyrene-divinylbenzene PST–DVB granules (the first stage of synthesis), and then by the method of chemical oxidation polycondensation of aniline under the action of ammonium peroxodisulfate polyaniline particles of the composite PST–PAn were synthesized which were synthesized by us (the second stage of synthesis) in the presence in acidic aqueous solution of sodium dodecylbenzenesulfonate granules of copolymer of styrene with divinylbenzene. The average diameter of the granules of the copolymer (PST–DVB), according to granulometric analysis, had numerical values within the range of 100–650 μm. Based on the IR spectroscopic studies of the chemical structure of the samples obtained, we conclude that there is a possibility of formation of partially penetrating polymer networks in synthesized composites (PAn-crosslinked polystyrene) and the presence of interactions between macromolecular polymer chains. Obviously, aniline penetrates from the solution into a polymeric polystyrene net (swelling process) and then aniline is polymerized by the action of ammonium peroxodisulfate, forming semipermeable spatial networks of these polymers. The processes of adsorption of silver ions on composite granules are investigated. The method of CEM using a raster microscope REMMA-102-02 shows the presence of adsorbed silver on the surface of the granules. The content of silver ions in AgNO 3 solution before and after adsorption on the surface of synthesized polymeric composites (potentiometric titration method) was determined and the mechanism of adsorption of silver on the surface of a polyaniline adsorbent was discussed. Keywords: polyaniline, polystyrene, composite, adsorption of Ag + .