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Related Experiment Video

Updated: Feb 11, 2026

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Super Tough, Ultrastretchable Hydrogel with Multistimuli Responsiveness.

Meng-Meng Song1, Ya-Min Wang1, Bing Wang1

  • 1State Key Laboratory of Polymer Materials Engineering (Sichuan University) , Polymer Research Institute of Sichuan University , Chengdu 610065 , China.

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Summary

Researchers developed novel supramolecular cross-linkers for advanced hydrogels. These cross-linkers enhance energy dissipation, leading to superior mechanical properties and responsiveness for diverse applications.

Keywords:
energy-dissipatinghigh-functionality cross-linkershost−guest inclusionhydrogelhydrophobic aggregationmultistimuli responsiveness

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Supramolecular Chemistry

Background:

  • Growing interest in hydrogels with effective energy dissipation capabilities.
  • Need for advanced cross-linking strategies to improve hydrogel performance.

Purpose of the Study:

  • To design and synthesize novel supramolecular cross-linkers for hydrogels.
  • To investigate the energy dissipation mechanisms and mechanical properties of the resulting hydrogels.

Main Methods:

  • Self-assembly of amphiphilic block copolymers with guest groups.
  • Host-guest interaction with vinyl-functionalized cyclodextrin (CD) to form cross-linkers.
  • Characterization of hydrogel mechanical properties, including fracture toughness, tension strength, and stretchability.

Main Results:

  • Successful formation of supramolecular cross-linkers via host-guest interactions.
  • Hydrogels exhibited excellent energy dissipation due to multiple sacrificial mechanisms.
  • Achieved remarkable mechanical properties: 2.68 ± 0.69 MJ/m³ fracture toughness, 475 kPa tension strength, and >2100% stretchability.
  • Demonstrated significant fatigue resistance and thermal/light responsiveness.

Conclusions:

  • The novel supramolecular cross-linker effectively enhances hydrogel energy dissipation and mechanical performance.
  • The developed hydrogels show promise for applications requiring high toughness, stretchability, and responsiveness.