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  • 1 Russian Academy of Sciences Enikolopov Institute of Synthetic Polymer Materials ul. Profsoyuznaya 70 Moscow 117393 Russia
  • 2 Karpov Institute of Physical Chemistry ul. Vorontsovo Pole 10 Moscow 103064 Russia
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Abstract  

Polyethylene oxide hydrogels containing physically immobilized dicyclohexano-18-crown-6 were prepared by radiation chemical synthesis. Doses of gel formation were found to depend on the molecular weight of the polyethylene oxide and were about 20 and 4 kGy for Mw of 105 and 3·106, respectively. An increase in the crown ether concentration resulted in the decrease of the efficiency of hydrogel formation, whereas the effect of polymer concentration was less pronounced. It was found that dicyclohexano-18-crown-6 immobilized in the PEO hydrogel showed relatively high resistance toward washout in aqueous media.