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Jan Romanski, Marcin Karbarz, Krystyna Pyrzynska, Janusz Jurczak and Zbigniew Stojek Polymeric hydrogels modified with ornithine and lysine: Sorption and release of metal cations and amino acids Journal of Polymer Science Part A: Polymer Chemistry 50

Version of Record online: 9 NOV 2011 | DOI: 10.1002/pola.25063

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Hydrogels containing available α-amino acid groups can be prepared by free-radical copolymerization of acryloyl and methacryloyl derivatives of ornithine and lysine. The gel volume depends on the amount of amino acid groups and the presence of metal ions. The metal ions capable of creating complexes with α-amino acid groups trigger the shrinking process. The Cu2+ sorption process proceeds in accordance with the Langmuir isotherm. The presence of available α-amino acid groups attached to the polymer network opens up the possibility of binding the compounds which can cocomplex the bound metal ions. These compounds could be released from the gel by changing pH.

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