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Polysaccharide-based recoverable double-network hydrogel with high strength and self-healing properties

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Abstract

Polysaccharide-based hydrogels (PSBHs) have received significant attention for numerous bio-applications due to their biocompatibility and non-immunogenic performance. However, the construction of PSBH with superior mechanical properties by a simple method is rarely adequately researched. This study focuses on the construction of a novel PSBH with superior mechanical and recoverable properties by integrating the synergistic and complementary interactions of covalent bond-associated oxidized sodium alginate (SA-CHO) gel and hydrogen bond-associated agarose (Aga) gel. With the synergy and complementarity of the SA-CHO and Aga networks, the hydrogel exhibited 17 and 15 times (20 and 9 times) greater compressive stress and modulus, respectively, compared with the SA-CHO gel (Aga gel). The hydrogel also displayed excellent fatigue resistance, recurrent shapeability, acid resistance and recovery ability, as well as self-healing ability. This study provides a unique perspective for enhancing the mechanical properties of PSBH through the synergy and complementarity of different kinds of polysaccharides without sacrificing the functionality of the PSBH.

Graphical abstract: Polysaccharide-based recoverable double-network hydrogel with high strength and self-healing properties

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Article information


Submitted
08 Aug 2019
Accepted
06 Dec 2019
First published
09 Dec 2019

J. Mater. Chem. B, 2020, Advance Article
Article type
Paper

Polysaccharide-based recoverable double-network hydrogel with high strength and self-healing properties

K. Lei, Z. Li, D. Zhu, C. Sun, Y. Sun, C. Yang, Z. Zheng and X. Wang, J. Mater. Chem. B, 2020, Advance Article , DOI: 10.1039/C9TB01679A

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