Zwitterionic hydrogels formed via quadruple hydrogen-bonds with ultra-fast room-temperature self-healing ability

Authors：Lin, Yinlei^*; Hu, Huawen; Yi, Peng; Sun, Sheng; Li, Yuhao; Liu, Xiaoting; Li, Guangji^*

Source：Materials Letters, 2020, 269: 127665.

DOI：10.1016/j.matlet.2020.127665

• Zwitterionic hydrogel
• Sulfobetaine
• UPy
• Self-healing
• Functional
• Polymers

A novel self-healing zwitterionic hydrogel was, for the first time, designed and prepared by integrating 2-ureido-4[1H] pyrimidinone (UPy) units into the macromolecular chains of a zwitterionic polymer. The prepared UPy-containing zwitterionic hydrogel can autonomously repair occurring incisions or cracks within 1 min at room temperature without the need for any stimulus. The ultra-fast self-healing zwitterionic hydrogel provides a new pathway for constructing smart materials for both experimental research and industrial production.

• Institution
  佛山科学技术学院