INFLUENCE OF LONG-RANGE EFFECT BETWEEN POLYMETHACRYLIC ACID AND POLY-4-VINYLPYRIDINE HYDROGELS ON THE SORPTION ABILITY TO LANTHANUM IONS

Abstract

The phenomenon sorption of lanthanum ions by polymethacrylic acid hydrogel (gPMAA) and poly-4-vinylpyridine hydrogel (gP4VP) intergel system was studied. It was established that the structure of the basic hydrogel significantly influence the self-organization of the PMAA hydrogels. Hydrogels mutual activation in an aqueous medium, particularly dependencies of swelling coefficient, specific electric conductivity and pH of water solutions are studied. The lanthanum ions extraction degree by individual hydrogels PMAA and P4VP was 71% and 59%, respectively. At ratio4:2 (67% of gPMAA-33% gP4VP), up to 90% lanthanum ions were recovered. The individual PMAA and P4VP polymer hydrogels have relatively low values of the polymer chain binding degree 1.34% and 0.79%, respectively. The obtained results indicate the possibility of creating selective intergel systems for lanthanum ions production.

References

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