Tough, Self‐Healing Hydrogels Capable of Ultrafast Shape Changing

Zhen Jiang, Broden Diggle, India Shackleford, Luke Connal

Research output: Contribution to journalArticlepeer-review

119 Citations (Scopus)

Abstract

Achieving multifunctional shape-changing hydrogels with synergistic and engineered material properties is highly desirable for their expanding applications, yet remains an ongoing challenge. The synergistic design of multiple dynamic chemistries enables new directions for the development of such materials. Herein, a molecular design strategy is proposed based on a hydrogel combining acid–ether hydrogen bonding and imine bonds. This approach utilizes simple and scalable chemistries to produce a doubly dynamic hydrogel network, which features high water uptake, high strength and toughness, excellent fatigue resistance, fast and efficient self-healing, and superfast, programmable shape changing. Furthermore, deformed shapes can be memorized due to the large thermal hysteresis. This new type of shape-changing hydrogel is expected to be a key component in future biomedical, tissue, and soft robotic device applications.
Original languageEnglish
JournalAdvanced Materials
Volume31
Issue number48
DOIs
Publication statusPublished or Issued - 2019
Externally publishedYes

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