COMPARISON OF SORPTION PROPERTIES OF POLYACIDS AND POLYBASES AS WELL AS INTERGEL SYSTEMS ON THEIR BASIS IN RELATION TO NEODYMIUM IONS

Abstract

The sorption extraction of neodymium ions was investigated both by individual polymeric hydrogels of polyacrylic acid (PAA), polymethacrylic acid (PMAA), poly-4vinylpyridine (P4VP) and poly-2-methyl-5-vinylpyridine (P2M5VP), and intergel systems prepared on their basis: gPAA-gP4VP; gPAA-gP2M5VP; gPMAA-gP4VP; gPMAKgP2M5VP. It has been established that a substantial increase in the sorption degree of neodymium ions by intergel systems, as compared with individual hydrogels, is probably associated with a high degree of ionization of hydrogels in the intergel system.

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