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Self-healing quadruple-shape memory hydrogel based on imine, coordination, and borate bonds with tunable mechanical properties

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Abstract

PAM/OSA/PVA hydrogel was prepared by simple copolymerization using acrylamide (PAM), oxidized sodium alginate (OSA), and poly (vinyl alcohol) as monomers. The hydrogel exhibited a quadruple-shape memory effect based on imine, coordination, and borate bonds. Self-healing properties of the quadruple-shape memory hydrogel were observed to evolve due to the imine and borate bonds. The hydrogel demonstrated tunable mechanical properties because of supramolecular interactions including OSA –Ca2+, PVA –borax, and OSA –PAM in different conditions. The new hydrogel is envisaged to increase the variety as well as broaden the design and manufacturing of shape memory hydrogels.

Dual multi-shape memory images of PAM/OSA/PVA hydrogel and its shape memory mechanism.

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Acknowledgments

We thank EditSprings (www.editsprings.com) for its linguistic assistance during the preparation of this manuscript.

Funding

This work was supported by the National Natural Science Foundation of China (No.51963001).

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Correspondence to Hua Yang.

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Wang, M., Mo, B., Chen, B. et al. Self-healing quadruple-shape memory hydrogel based on imine, coordination, and borate bonds with tunable mechanical properties. Colloid Polym Sci 298, 285–291 (2020). https://doi.org/10.1007/s00396-020-04613-8

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Keywords

  • Quadruple-shape memory hydrogel
  • Self-healing property
  • Imine bond
  • Coordination bond
  • Borate bond
  • Mechanical properties