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Three-Dimensional Printed Multiresponsive Structures of Smart Hydrogel.

Liang Cheng1, Qianqian Tang1, Yangyang Zhang1

  • 1School of Biomedical Engineering, 3D-Printing and Tissue Engineering Center (3DPTEC), Anhui Medical University, Hefei, China.

3D Printing and Additive Manufacturing
|September 22, 2025
PubMed
Summary
This summary is machine-generated.

Researchers developed a 3D printable gelatin-based shape memory hydrogel. This study optimizes manufacturing for responsive biomedical structures using extrusion-based 3D printing, enhancing mechanical and photothermal properties.

Keywords:
3D printedhydrogelsmultiresponsivesmartstructures

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Area of Science:

  • Biomaterials Science
  • Polymer Chemistry
  • Biomedical Engineering

Background:

  • Hydrogels are crucial soft smart materials for responsive biomedical structures.
  • Limited research exists on the manufacturing efficiency and precision of extrusion-based 3D printing for gelatin-based smart hydrogels.

Purpose of the Study:

  • To design and prepare a gelatin-based shape memory hydrogel with enhanced mechanical and photothermal properties.
  • To investigate the printability and optimize parameters for extrusion-based 3D printing of this hydrogel.
  • To explore the shape memory behavior and potential biomedical applications of the 3D printed structures.

Main Methods:

  • Formulation of a gelatin-based hydrogel incorporating sodium alginate, tannic acid, and sodium iron ethylene diamine tetra acetic acid.
  • Evaluation of hydrogel printability using extrusion-based 3D printing with varying component ratios.
  • Optimization of printing parameters and hydrogel formulas to achieve desired structural strength.
  • Characterization of shape memory properties in printed hydrogel structures under different printing conditions.

Main Results:

  • Successful development of a printable gelatin-based shape memory hydrogel with improved mechanical strength and photothermal response.
  • Identification of optimal hydrogel formulations and printing parameters for fabricating robust 3D printed structures.
  • Demonstration of tunable shape memory behavior in the printed hydrogel constructs.

Conclusions:

  • The study presents a viable method for producing 3D printed shape memory smart hydrogel structures.
  • The optimized manufacturing process and hydrogel formulation offer solutions for designing multifunctional hydrogels for biomedical applications.
  • This work advances the application of smart hydrogels in responsive biomedical engineering.