Polyvinyl Alcohol (PVA)-Based Hydrogels: Recent Progress in Fabrication, Properties, and Multifunctional Applications

Area of Science:

• Materials Science
• Polymer Chemistry
• Biomedical Engineering

Background:

• Polyvinyl alcohol (PVA)-based hydrogels are recognized for biocompatibility and tunable mechanical properties.
• Their ability to form stable 3D networks makes them suitable for various advanced applications.
• Recent research focuses on enhancing their performance and expanding their utility.

Purpose of the Study:

• To provide a comprehensive review of recent advancements in PVA-based hydrogels.
• To explore unique properties, fabrication strategies, and multifunctional applications.
• To discuss challenges and future perspectives in PVA hydrogel development.

Main Methods:

• Review of synthesis techniques including freeze/thaw cycles and chemical cross-linking.
• Analysis of enhancement strategies for improved mechanical strength and responsiveness.
• Examination of smart functionalities like self-healing and multi-responsiveness.

Main Results:

• PVA hydrogels exhibit enhanced mechanical strength, elasticity, and stimuli-responsiveness.
• Applications span biomedical fields, environmental treatment, flexible electronics, and civil engineering.
• Integration of self-healing and multi-responsive features is demonstrated.

Conclusions:

• PVA-based hydrogels show significant potential in regenerative medicine, environmental sustainability, and advanced manufacturing.
• Challenges include optimizing mechanical stability and addressing cross-linker toxicity.
• Interdisciplinary collaboration is crucial for realizing the full potential of PVA hydrogels.