CHANGING THE DEGREE OF CONNECTION OF POLYMER CHAINS WITH GOLD AND IRON IONS IN THE INTERPOLYMER SYSTEM KU-2-8-P4VP

Abstract

Introduction. This paper presents the degree of binding of polymer chains with gold and
iron ions based on cross-linked polyelectrolyte interpolymer systems. The objects of study were the cation
exchanger KU-2-8 and the anion exchanger P4VP, which are used in domestic production. The purpose.
Determination of the sorption properties of the interpolymer system based on the cationite KU-2-8 and the
anionite P4VP, as well as experimental confirmation of the degree of binding with gold and iron ions. The
obtained results. During the study, the degree of binding of polymer chains to gold (Au+
) and iron (Fe2+)
ions in the KU-2-8-P4VP interpolymer system was determined depending on the molar ratio and time.
Compared to the individual polymer KU-2-8 (6:0), the anionite P4VP (0:6) showed a significantly higher
degree of gold ion sorption, which stabilized over time. The maximum degree of binding of gold ions to
the polymer chain was recorded after 6 hours in the interpolymer system at a ratio of (2:4) and amounted
to 3.16 %. The degree of iron ion binding, especially at a ratio of 4:2, reached a significantly higher level
after 24 hours, amounting to 6.46 %. As a result of remote interaction, areas of change were identified at a
ratio of 4:2, and after 24 hours, the degree of gold and iron ion binding increased by 8.77 %. As can be
seen from the diagram, the degree of iron ion binding in the interpolymer system is less intense compared
to gold ions, and in almost all cases, the degree of gold ion binding reaches maximum values. In the KU2-8 – P4VP interpolymer system in a 1:5 ratio, the degree of binding of gold ions to the polymer chain
within 24 hours was 3.13 %, and for iron ions, this indicator was 0.55 %. Conclusion. The results of the
study indicate that in the interpolymer system, the degree of binding of gold ions to the polymer chain is
significantly higher, while the degree of binding of the polymer to iron ions is relatively weak and stable.