Formulation and Characterization of Cerium Ion Cross-Linked Alginate/PVA Films for Wound Dressing Applications

Area of Science:

• Biomaterials Science
• Polymer Chemistry
• Wound Healing Technology

Background:

• Alginate films are widely explored for biomedical applications.
• Developing advanced wound dressings requires materials with specific fluid management properties.
• Cerium (Ce) incorporation can impart beneficial characteristics to biomaterials.

Purpose of the Study:

• To formulate and characterize novel cerium(III) cross-linked alginate (Ce/Alg) films.
• To investigate the effect of poly(vinyl) alcohol (PVA) incorporation on film properties.
• To evaluate the potential of these films as wound coverage dressings.

Main Methods:

• Alginate films were prepared using the casting method and cross-linked with cerium(III) ions via acid treatment.
• Poly(vinyl) alcohol was incorporated into the alginate matrix.
• Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), and scanning electron microscopy (SEM) were used for characterization.
• Swelling behavior in phosphate-buffered saline (PBS) and water, and water vapor permeability were assessed.

Main Results:

• The incorporation of PVA did not alter the chemical structure of the Ce/Alg films, as confirmed by FTIR and DSC.
• SEM analysis revealed a porous structure in the cerium-alginate films.
• The films demonstrated rapid swelling within 10 minutes in PBS and water.
• The cerium-alginate films exhibited significant water vapor permeability.

Conclusions:

• Cerium(III) cross-linked alginate films, enhanced with PVA, possess favorable biomaterial properties.
• The rapid fluid absorption and moisture transmission capabilities suggest suitability for wound environments.
• These developed films hold potential for future applications as efficient wound coverage dressings.