3D-Printed Hydrogels from Natural Polymers for Biomedical Applications: Conventional Fabrication Methods, Current...

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Polymer Chemistry

Background:

• Hydrogels, water-swollen polymer networks, mimic the extracellular matrix.
• Natural hydrogels offer biocompatibility and biodegradability, ideal for biomedical applications.
• Conventional methods struggle with the intricate structures of biological tissues.

Purpose of the Study:

• To review hydrogel structures and biomedical applications, focusing on natural sources.
• To discuss formulations of alginates, chitosan, gelatin, and hyaluronic acid.
• To explore 3D printing techniques for hydrogel fabrication.

Main Methods:

• Literature review of hydrogel synthesis and applications.
• Analysis of natural hydrogel components (alginates, chitosan, gelatin, hyaluronic acid).
• Discussion of various 3D printing technologies for hydrogels.

Main Results:

• Natural hydrogels present viable alternatives to synthetic ones for tissue engineering.
• 3D printing overcomes limitations of conventional methods in fabricating complex hydrogel structures.
• Specific formulations of natural polymers show promise for diverse biomedical applications.

Conclusions:

• Natural hydrogels, particularly when fabricated using 3D printing, hold significant potential for advanced biomedical applications.
• Further research into optimizing 3D printing parameters for natural hydrogels is warranted.
• The review provides a comprehensive overview for researchers in biomaterials and tissue engineering.