Recent Advances in Poly(vinyl alcohol)-Based Hydrogels.

Area of Science:

• Polymer Science
• Materials Science
• Biomaterials Engineering

Background:

• Poly(vinyl alcohol) (PVA) is a synthetic polymer with desirable properties like water solubility, film-forming ability, non-toxicity, and good mechanical strength.
• PVA is utilized in hydrogels, membranes, and films for applications spanning biomedical uses, sensing, packaging, and wastewater treatment.
• However, pure PVA exhibits limitations such as poor water stability, low flexibility, and inadequate biocompatibility and biodegradability.

Purpose of the Study:

• To review recent advancements in the development and application of poly(vinyl alcohol)-based hydrogels.
• To highlight strategies for overcoming the limitations of pure PVA through blending and chemical modification.
• To explore the new functionalities and expanded applications of modified PVA hydrogels.

Main Methods:

• Literature review focusing on recent research in PVA hydrogel synthesis and characterization.
• Analysis of studies involving the blending of PVA with synthetic polymers, biomolecules, and inorganic/organic compounds.
• Examination of research on chemical modifications of PVA to alter its properties.

Main Results:

• Blending PVA with other materials significantly improves its water stability, flexibility, biocompatibility, and biodegradability.
• Chemical modification of PVA introduces novel properties, leading to enhanced performance and expanded application possibilities.
• PVA-based hydrogels demonstrate improved functionalities for advanced applications in various sectors.

Conclusions:

• Poly(vinyl alcohol)-based hydrogels represent a promising class of materials with tunable properties.
• Strategic modification of PVA through blending or chemical transformation is key to overcoming its inherent limitations.
• Recent advances underscore the vast potential of PVA hydrogels in diverse scientific and industrial fields.