SELECTIVITY OF INTERGEL SYSTEM BASED ON HYDROGELS OF POLYMETHACRYLIC ACID AND POLY-4-VINYLPYRIDINE TO LANTHANUM AND CERIUM IONS

Abstract

Process of lanthanum and cerium ions sorption by intergel system hydrogel of polymethacrylic acid (hPMAA) – hydrogel of poly-4-vinylpyridine (hP4VP) is studied. Found that intergel system hPMAA-hP4VP has selectivity to lanthanum and cerium ions. PMAA hydrogel doesn’t have high values of extraction degree in relation to lanthanum and cerium ions (66.28% and 60.33% respectively). P4VP hydrogel also has low values of La3+ and Ce3+ ions sorption degree (66.05% and 56.67% respectively). In intergel system hPMAA-hP4VP selectivity can be controlled by changing hydrogels ratio. Maximum extraction degree of lanthanum ions is observed at 17%hPMAA:83%hP4VP ratio, sorption degree is 90.34%. Maximum sorption degree of cerium ions is observed at 50%hPMAA:50%hP4VP ratio, extraction degree is 89.33%. Individual PMAA and P4VP hydrogels also do not have high polymer chain binding degree. Polymer chain binding degree (in relation to lanthanum ions) of hPMAA and hP4VP is 55.17% and 55.00% respectively. Binding degree (in relation to cerium ions) of hPMAA and hP4VP is 50.05% and 47.00%. Maximum values of polymer chain binding degree (in relation to lanthanum ions) in intergel system hPMAA-hP4VP are observed at 17%hPMAA:83%hP4VP ratio, binding degree is 75.33%. Maximum values of binding degree (in relation to cerium ions) are observed at 50%hPMAA:50hP4VP ratio, binding degree is 74.10%. At 17%hPMAA:83%hP4VP and 50%hPMAA:50hP4VP ratios effective dynamic exchange capacity (in relation to lanthanum and cerium ions) is higher almost on 30% comparatively with individual PMAA and P4VP hydrogels. Mutual activation of PMAA and P4VP hydrogels provides transition into highly ionized state and, as a result, significant increase of sorption properties in intergel pairs.

References

[1] 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 interaction in an aqueous medium // Journal of chemistry and chemical engineering. 2014. Vol. 3. P. 265-269.
[2] Alimbekova B., Erzhet B., Korganbayeva Zh., Himersen H., Kaldaeva S., Kondaurov R., Jumadilov T. Electrochemical and conformational properties of intergel systems based on the crosslinked polyacrylic acid and vinylpyridines // Proceedings of VІІ international scientific-technical conference “Advance in petroleum and gas industry and petrochemistry” (APGIP-7), Lviv, Ukraine, may 2014. P. 64.
[3] Jumadilov T.K., Himersen H., Kaldayeva S.S., Kondaurov R.G. Features of Electrochemical and Conformational Behavior of Intergel System Based on Polyacrylic Acid and Poly-4Vinylpyridine Hydrogels in an Aqueous Medium // Journal of Materials Science and Engineering B. 2014. Vol. 4. P. 147-151.
[4] Jumadilov T.K., Abilov Zh.A., Kaldayeva S.S., Himersen H., Kondaurov R.G. Ionic equillibrium and conformational state in intergel system based on polyacrylic acid and poly-4vinylpyridine hydrogels // Journal of Chemical Engineering and Chemistry Research. 2014. Vol. 1. P. 253-261.
[5] Jumadilov T., Abilov Zh., Kondaurov R., Himersen H., Yeskalieva G., Akylbekova M. and Akimov A. Influence of hydrogels initial state on their electrochemical and volume-gravimetric properties in intergel system polyacrylic acid hydrogel and poly-4-vinylpyridine hydrogel // Journal of Chemistry and Chemical Technology. 2015. N 4. P. 459-462.
[6] Jumadilov T., Kaldayeva S., Kondaurov R., Erzhan B., Erzhet B. Mutual activation and high selectivity of polymeric structures in intergel systems / Jumadilov T. // High performance polymers for engineering based composites / Omari V. Mukbaniani, Marc J.M. Abadie, Tamara Tatrishvilli. CRC press, 2015. P. 111-119.
[7] Jumadilov T.K., Abilov Zh.A., Kondaurov R.G. Intergel systems in recovery of precious and rare earth metals // International journal of applied and fundamental research: сайт. 2015. N 1. URL: http://www.science-sd.com/460-24777
[8] Jumadilov T.K., Abilov Zh.A., Kondaurov R.G. Intergel systems – highly effective instrument for rare earth elements extraction from industrial solutions // Proceedings of 4th International Caucasian Symposium on Polymers and Advanced Materials. Batumi, Georgia, 2015. P. 64.
[9] Jumadilov T., Abilov Zh., Grazulevicius J., Zhunusbekova N., Kondaurov R., Agibayeva L., Akimov A. Features of lanthanum ions sorption by intergel system based on polymethacrylic acid and poly-4-vinylpyridine hydrogels // Proceedings of International scientific-technical conference “The modern technologies of polymer materials obtaining and processing”. Lviv, Ukraine, September 2016. P. 95.
[10] Jumadilov T.K., Kondaurov R.G., Abilov Zh.A., Grazulevicius J.V., Akimov A.A. Influence of polyacrylic acid and poly-4-vinylpyridine hydrogels mutual activation in intergel system on their sorption properties in relation to lanthanum (III) ions // Polymer Bulletin. 2017. Vol. 74. P. 4701-4713.
[11] Jumadilov T.K., Kondaurov R.G., Khakimzhanov S.A., Eskalieva G.K., Meiramgalieva G.M. Activated structures of interpenetrating networks – new type of effective sorbents for different nature ions // Proceedings of 5th International Caucasian Symposium on Polymers and Advanced Materials. Tbilisi, Georgia, july 2017. P. 33.
[12] Petruhin О.М. Practice book on physical and chemical methods of analysis. М.: Chemistry, 1987. P. 77-80.