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Related Experiment Video

Updated: Jun 21, 2025

3D Printed Porous Cellulose Nanocomposite Hydrogel Scaffolds
06:36

3D Printed Porous Cellulose Nanocomposite Hydrogel Scaffolds

Published on: April 24, 2019

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Digital light processing printed hydrogel scaffolds with adjustable modulus.

Feng Xu1, Hang Jin1, Huiquan Wu1

  • 1Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen, 361102, China.

Scientific Reports
|July 8, 2024
PubMed
Summary

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This summary is machine-generated.

This study introduces a simple two-step method for fabricating tunable hydrogel scaffolds. Digital light processing and post-processing allow broad mechanical property adjustment for diverse tissue engineering applications.

Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Polymer Chemistry

Background:

  • Hydrogels are widely used as biomaterials for tissue scaffolds.
  • Controlling hydrogel mechanical properties is crucial but often complex.
  • Existing methods for adjusting mechanical properties are tedious.

Purpose of the Study:

  • To develop a simple and effective method for adjusting the mechanical modulus of hydrogel scaffolds.
  • To enable the fabrication of hydrogel scaffolds with tunable mechanical properties for diverse tissue applications.

Main Methods:

  • Utilized digital light processing (DLP) for 3D printing UV-curable polyacrylamide-alginate hydrogels.
  • Implemented a two-step process combining DLP with post-processing using Fe3+ ion baths for secondary crosslinking.
Keywords:
Adjustable modulusDigital light processingDouble network hydrogelsHydrogel scaffolds

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  • Varied Fe3+ ion concentrations during post-processing to tune the hydrogel modulus.

    • Main Results:

    • Achieved high-precision printing (10 μm) and a broad range of tunable mechanical modulus (15.8–345 kPa).
    • Demonstrated the ability to create complex 3D patterns with tissue-mimicking features.
    • Successfully fabricated hydrogel scaffolds supporting cardiac and vascular tissue growth and morphology induction.

    Conclusions:

    • The proposed two-step fabrication process offers a simple yet powerful approach for creating tunable hydrogel scaffolds.
    • This method provides a broad modulus adjustment range, suitable for various human tissues.
    • The developed hydrogel scaffolds show promise for regenerative medicine and tissue engineering applications.