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Updated: Jun 27, 2026

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Porous hierarchically ordered hydrogels demonstrating structurally dependent mechanical properties.

Elisabeth C Lloyd1, Sujata Dhakal2, Shahrouz Amini3

  • 1Materials Science and Engineering, The Pennsylvania State University, University Park, PA, USA.

Nature Communications
|April 22, 2025
PubMed
Summary
This summary is machine-generated.

Researchers created porous hydrogel fibers mimicking natural tissues using self-assembly. This biomaterial exhibits unique mechanical properties due to its multiscale structure, paving the way for advanced biomaterials.

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Area of Science:

  • Biomaterials Science
  • Materials Engineering
  • Tissue Engineering

Background:

  • Natural tissues exhibit hierarchical ordering crucial for their properties.
  • Biomaterial synthesis has largely overlooked multiscale structural organization, focusing on molecular approaches.

Purpose of the Study:

  • To develop a bottom-up self-assembly process for creating biomimetic hydrogel fibers.
  • To investigate the impact of multiscale structure on the mechanical properties of synthesized hydrogels.

Main Methods:

  • Utilized a bottom-up self-assembly approach to form physically crosslinked nanostructured micelles.
  • Engineered micrometer-sized, water-rich pores with controlled orientation within hydrogel fibers.
  • Controlled material microstructure and orientation across multiple length scales (nm-μm).

Main Results:

  • Synthesized highly porous hydrogel fibers structurally and mechanically resembling extracellular matrices.
  • Achieved low elastic moduli (<1 kPa), high elasticity (>12x extension), and non-linear elasticity (hyperelasticity).
  • Demonstrated that multiscale structural control directly influences mechanical characteristics.

Conclusions:

  • The bottom-up self-assembly process successfully generates biomimetic hydrogel fibers.
  • The observed mechanical properties are attributed to the interplay between pore structure and polymer chains.
  • Controlling multiscale architecture is key to tailoring biomaterial mechanical performance.