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Highly Oriented Bio-Mimetic Hydrogels by Calendering.

Zhanqi Liu1, Yuqing Wang1, Haidi Wu1

  • 1School of Chemistry and Chemical Engineering, Yangzhou University, No 180, Road Siwangting, Yangzhou, Jiangsu, 225002, China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|June 19, 2025
PubMed
Summary
This summary is machine-generated.

Researchers developed a new method to create strong, tough anisotropic hydrogels inspired by natural structures. These biomimetic materials exhibit excellent mechanical properties for tissue engineering and other applications.

Keywords:
anisotropic hydrogelscalenderingfatigue resistancemechanical properties

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Area of Science:

  • Materials Science
  • Biomaterials Engineering
  • Tissue Engineering

Background:

  • Anisotropic hydrogels are crucial for load-bearing tissue engineering applications.
  • Challenges exist in creating scalable methods for hydrogels with high strength, toughness, and resistance to fatigue and swelling.

Purpose of the Study:

  • To develop an effective and scalable strategy for fabricating biomimetic anisotropic hydrogels.
  • To achieve superior mechanical properties, including tensile strength, toughness, and fatigue resistance.

Main Methods:

  • An organogel-assisted calendering strategy was employed, inspired by nacre and soft tissues.
  • Synergistic shearing and annealing promoted macromolecular alignment and a nacre-like lamellar structure.

Main Results:

  • The anisotropic hydrogels achieved high tensile strength (41.0 ± 6.4 MPa) and elastic modulus (67.0 ± 5.1 MPa).
  • Exceptional toughness (46.2 ± 3.3 MJ m⁻³) and fracture energy (62.20 ± 8.55 kJ m⁻²) were observed.
  • Excellent crack growth and swelling resistance, with a fatigue threshold of 2170 J m⁻², were demonstrated.

Conclusions:

  • The organogel-assisted calendering strategy offers a promising approach for large-scale production of biomimetic anisotropic hydrogels.
  • The developed hydrogels possess outstanding mechanical properties suitable for biomedical and engineering applications.