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The effect of metal ions on the viscoelastic properties of thermosensitive sol-to-gel reversible metallo-supramolecular hydrogels

Abstract : Smart metallo-supramolecular hydrogels offer attractive possibilities to combine the properties of hydrogels with the self-assembly features offered by metal–ligand coordination. The preparation of metal-bis(terpyridine-poly(N,N-dimethylacrylamide)-b-poly(N-isopropylacrylamide)) ([M(Tpy-PDMA-b-PNIPAM)2]2+) complexes in aqueous media and their use for the elaboration of hydrogels by thermo-induced micellar aggregation is investigated in this study. The rheological behaviour suggested that the metal-bis complexes based on a copolymer having two distinct hydrophilic blocks self-assemble into flower-like micelles. Moreover, the control of the viscoelastic properties of the hydrogels is notably achieved via an appropriate choice of the nature and the molar equivalent composition of metal ions.
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https://hal-univ-lemans.archives-ouvertes.fr/hal-01902794
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Soumis le : mardi 23 octobre 2018 - 18:23:14
Dernière modification le : mardi 4 janvier 2022 - 05:00:18

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A. Gutierres, Sagrario Pascual, Laurent Fontaine, Sandie Piogé, L. Benyahia. The effect of metal ions on the viscoelastic properties of thermosensitive sol-to-gel reversible metallo-supramolecular hydrogels. Polymer Chemistry, Royal Society of Chemistry - RSC, 2018, 9 (18), pp.2494 - 2504. ⟨10.1039/c7py02118f⟩. ⟨hal-01902794⟩

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