Morpholine-functionalized polycarbonate hydrogels for heavy metal ion sequestration

M. Kawalec, A.P. Dove, L. Mespouille, P. Dubois

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16 Citations (Scopus)


A new six-membered carbonate functionalized with 2-(morpholin-4-yl)ethyl was synthesized and copolymerized with a poly(ethylene oxide)-based cross-linker in a controlled, organocatalyzed ring-opening polymerization process. Well-defined functionalized aliphatic polycarbonate-based hydrogels were obtained with gel fractions reaching 99%. Moreover, the gels that contained 2-(morpholin-4-yl)ethyl groups revealed stimuli-responsive properties towards pH. In the meantime, swelling properties of the hydrogels were found to be reproducible and good stability was observed in the pH range of 4–7.2, while a relatively rapid degradation occurred in more basic solution (pH = 10). ICP MS measurements of aqueous lead(II) nitrate solutions revealed that the functionalized material possessed properties to withdraw and retain lead ions from aqueous solution.
Original languageEnglish
Pages (from-to)1260-1270
JournalPolymer Chemistry
Publication statusPublished - 30 Nov 2012


  • carbonate
  • ring-opening polymerization
  • hydrogels


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