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June 15, 2026Advanced Materials

Shear‐Stiffening Damping Ionogels Enabled by the Synergy of Dynamic Bonds and Steric Hindrance

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Authors

XZXicheng ZhangJYJunjie YuLLLingling Li

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Overview

Randomized trial demonstrates high-rate impact strength in tough ionogels, indicating a new strategy for protective materials.

Key Points

  • This research aims to improve the energy dissipation and stiffness characteristics of protective ionogels under impact loading.
  • Developed ionogels using dynamic bonds and steric hindrance from hyperbranched polymeric ionic liquids (HPILs)
  • Evaluated mechanical properties such as shear-stiffening response and damping across broad frequencies
  • Tested impact strength and toughness at high loading rates.
  • Achieved 842-fold shear-stiffening response and high damping (tan δ > 1) in a frequency range of 10 − 3 –10 5 rad s − 1
  • Demonstrated high impact strength of 248.6 MPa at an impact rate of 4000 s − 1
  • Showed toughness of 86.5 MJ m − 3, indicating effective energy dissipation.

Cite This Study

Zhang et al. (2026) studied this question.

synapsesocial.com/papers/6a2f9866a1cfeec490829697https://doi.org/10.1002/adma.73746
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