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Issue 4, 2013
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Morpholine-functionalized polycarbonate hydrogels for heavy metal ion sequestration

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Abstract

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.

Graphical abstract: Morpholine-functionalized polycarbonate hydrogels for heavy metal ion sequestration

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Supplementary files

Article information


Submitted
05 Nov 2012
Accepted
26 Nov 2012
First published
30 Nov 2012

Polym. Chem., 2013,4, 1260-1270
Article type
Paper

Morpholine-functionalized polycarbonate hydrogels for heavy metal ion sequestration

M. Kawalec, A. P. Dove, L. Mespouille and P. Dubois, Polym. Chem., 2013, 4, 1260
DOI: 10.1039/C2PY20937C

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