Advances in versatile anti-swelling polymer hydrogels.

Area of Science:

• Materials Science
• Biomedical Engineering

Background:

• Traditional hydrogels exhibit significant swelling, limiting their utility in biomedical applications due to mechanical degradation and tissue compression.
• Anti-swelling hydrogels maintain size stability in aqueous environments, preserving mechanical properties and enabling in vivo applications.

Purpose of the Study:

• To provide a comprehensive review of anti-swelling hydrogel strategies.
• To analyze design and manufacturing tactics for anti-swelling hydrogels based on classical swelling theories.
• To guide future development of advanced anti-swelling hydrogels with desirable functionalities.

Main Methods:

• Generalization and analysis of existing tactics in anti-swelling hydrogel design and manufacture.
• Review of classical swelling theories relevant to hydrogel behavior.
• Synthesis of information on integrating anti-swelling properties with functionalities like high strength, self-healing, and injectability.

Main Results:

• Identified various strategies for creating anti-swelling hydrogels.
• Highlighted the importance of understanding swelling theories for material design.
• Demonstrated the integration of anti-swelling properties with diverse functionalities.

Conclusions:

• Anti-swelling hydrogels offer significant advantages over traditional hydrogels for biomedical applications.
• A systematic understanding of design tactics is crucial for developing advanced anti-swelling hydrogels.
• This review provides a foundation for future research in functional anti-swelling materials.