Highly stretchable, self-adhesive, and self-healable double network hydrogel based on alginate/polyacrylamide with tunable mechanical properties

Ali Pourjavadi*, Maryam Tavakolizadeh, Seyed Hassan Hosseini, Navid Rabiee, Mojtaba Bagherzadeh

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

A number of synthetic hydrogels suffer from low mechanical strength. Despite of the recent advances in the fabrication of tough hydrogels, it is still a great challenge to simultaneously construct high stretchability, and self-adhesive and self-healing capability in a hydrogel. Herein, a new type of double network hydrogel was prepared based on irreversible cross-linking of polyacrylamide chains and Schiff-base reversible cross-linking between glycidyl methacrylate-grafted ethylenediamine and oxidized sodium alginate (OSA). The combination of both cross-linkings and their synergistic effect provided a novel hydrogel with high strength, stretchable, rapid self-healing, and self-adhesiveness to different material. Besides, the hydrogels with diverse OSA content could maintain their original shapes after loading–unloading tensile test. The resulting hydrogel has a great potential in various fields for supporting and load-bearing substance.

Original languageEnglish
Pages (from-to)2062-2073
Number of pages12
JournalJournal of Polymer Science
Volume58
Issue number15
DOIs
Publication statusPublished - 1 Aug 2020
Externally publishedYes

Keywords

  • double network hydrogels
  • mechanical strength
  • Schiff base interactions
  • self-healing

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