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The effect of the solvent/monomer (S/M) ratio on the structure and adsorption properties of microporous polymer particles imprinted with lanthanum and scandium ions is studied. Microporous particles imprinted with lanthanum and scandium ions were obtained from two functional monomers-methacrylic acid (MAC) and vinylpyridine (4-VP) - by forming a complex with the template ion of lanthanum and scandium by ion interactions. The selfassembled lanthanum/monomer complex was polymerized in the presence of an ethylene glycol dimethacrylate (EGDMA) crosslayer by suspension polymerization. The chemical structure, morphology, and adsorption capacity of microporous particles imprinted with lanthanum and scandium ions were analyzed by infrared spectroscopy. Molecular polymers showed high selectivity with respect to lanthanum and scandium ions. REFERENCES [1] Jiang Y., Kim D. // Chemical Engineering Journal. 166 (2011). P. 435-444. [2] Dam H.A., Kim D. Metal ion imprinted polymer microspheres derived from copper methacrylate for selective separation of heavy metal ions // J. Appl. Polym. Sci. 108 (2008). P. 14-24. [3] Hoai N.T., Yoo D.K., Kim D. Batch and column separation characteristics of copper-imprinted porous polymer micro-beads synthesized by a direct imprinting method // J. Hazard. Mater. 173 (2010). P. 462-467. [4] Imangazy A.M., Jumadilov T.K., Kondaurov R.G., Zhora A.D. «Remote interaction» effect of polymer hydrogels on samarium ions sorption // Proceedings of XXI Mendeleev congress on general and applied chemistry, Saint-Petersburg, Russia, 9-13 September 2019. Vol. 2b, section 2. P. 154. [5] Alimbekova B.T., Korganbayeva Zh.K., Himersen H., Kondaurov R.G., Jumadilov T.K. Features of Polymethacrylic Acid and Poly-2-Methyl-5-Vinylpyridine Hydrogels Remote Interac- tion in an Aqueous Medium // J. Chem.-Chem. Eng. 2014. Vol. 8, No. 3. P. 265-269. [6] Jumadilov T.K. Electrochemical and conformational behaviour of intergel systems based on the rare crosslinkedpolyacid and polyvynilpyrydines International // Conference of Lithuanian Chemical Society “Chemistry and Chemical Technology” Proceedings of the International Conference, Kaunas, Lithuania, 2014. P. 226-229. [7] Jumadilov Т.K., Kondaurov R.G. Self-organization of polymer hydrogels of polyacrylic acid in intergel systems in cerium ions sorption process // Chemical Journal of Kazakhstan. 2018. No. 2. P. 254-262. [8] Yskak L.K., Dzhumadilov T.K., Myrzahmetovа N.O., Suberlyak O.V. Features of distance interaction and mutual activation of hydrogel polymethacrylic acid and anionite AV-17 // E. A. Bu-ketov Karagandy State University Institute of polymer materials and technology international science and technology center. Proceedings of the international symposium on specialty polymers. 2019. P. 106. [9] Jumadilov T.K., Kondaurov R.G. Features of selective sorption of lanthanum from solution, which contains ions of lanthanum and cerium by intergel system hydrogel of polymethacrylic acid: hydrogel of poly-2-methyl-5-vinylpyridine // Chemistry and industrial techniques for chemical engineers / A.K. Haghi, L. Pogliani, A.F. Ribeiro. AAP press, 2020. P. 149-174. [10] Jumadilov T.K., Kondaurov R.G., Imangazy A.M. Features of sorption of rare-earth metals of cerium group by intergel systems based on polyacrylic acid, polymethacrylic acid and poly-4-vinylpyridine hydrogels // Bulletin of the Karaganda university. Chemistry series. 2020. Vol. 98, No 2. P. 58-67. [11] Saparbekova I.S., Suberlyak O.V., Yskak L.K., Malimbayeva Z.B., Myrzahmetovа N.O., Dzhumadilov T.K. Some features of the remote interaction of KU 2-8 cation exchanger with AB-17 anion exchanger // International Scientific And Technical Conference «Modern Technologies Of Production And Processing Of Polymeric Materials» Collection of Abstracts. 2019. Р. 87.

The paper deals with the sorption of lanthanum ions by an interpolymer system consisting of sulfonic cation exchanger KU2-8 and anion exchanger AV-17-8. To predict the sorption activity of the intergel system, the mutual activation of the KU2-8 sulfonic cationite with the AV-17-8 anionite in the aqueous medium was initially studied. Due to the mutual activation of hydrogels in the course of their remote interaction, the polymer macromolecules pass into a highly ionized state, which leads to a significant increase in the degree of extraction of lanthanum ions from polymer hydrogels in intergel vapors as compared to the initial polymers. We calculated the degree of extraction of lanthanum ions by the interpolymer system KU2-8: AV-17-8, the degree of binding of the polymer chain (in relation to lanthanum ions) with the initial ion exchangers and the interpolymer system KU2-8: AV-17-8. Based on the data obtained, a comparative analysis of the sorption of lanthanum ions by individual sorbents and an interpolymer system was carried out within the limits of the ratio KU2-8: AV-17-8 = 5: 1–1: 5. It has been established that the maximum degree of sorption of lanthanum ions by the KU2-8: AV-17-8 interpolymer system is observed within the ratio KU2-8: AV-17-8 = 2: 4 at 48 hours of remote interaction of the interpolymer system and is 54.73 mol. %, at which the degree of binding of the polymer chain is 6.15%

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