Employing Cellulose Nanofiber-Based Hydrogels for Burn Dressing.

Area of Science:

• Biomaterials Science
• Polymer Chemistry
• Regenerative Medicine

Background:

• Effective burn dressings are crucial for wound healing and patient comfort.
• Hydrogel films offer a promising platform for advanced wound care applications.
• Cellulose nanofibers (CNF) possess unique properties suitable for biomaterial development.

Purpose of the Study:

• To fabricate pain-relieving hydrogel films using cellulose nanofibers (CNF) for burn wound treatment.
• To investigate the structural integrity, drug release, and biocompatibility of the developed hydrogel films.
• To evaluate the potential of cationized CNF in enhancing hydrogel properties for wound healing.

Main Methods:

• Hydrogel films were prepared using varying concentrations of CNF (1-3 wt.%), hydroxyethyl cellulose (HEC, 1 wt.%), and citric acid (CA) as a crosslinker (10-20 wt.%).
• Fourier-transform infrared (FTIR) spectroscopy confirmed the cationization of CNF.
• Field-emission scanning electron microscopy (FE-SEM) analyzed the hydrogel microstructure.
• In vitro drug release studies and MTT assays assessed drug delivery and cytotoxicity.

Main Results:

• FE-SEM confirmed the preservation of CNF structure within the hydrogel matrix.
• FTIR spectroscopy verified successful cationization of CNF.
• Drug release studies exhibited a linear correlation between drug concentration and release.
• MTT assays demonstrated the non-toxicity and effectiveness of cationized CNF hydrogels.

Conclusions:

• The developed cellulose nanofiber hydrogel films are effective, non-toxic wound dressings with potential for pain relief and enhanced wound healing.
• The cationization process positively impacts the properties of CNF-based hydrogels for biomedical applications.
• These findings support the use of CNF hydrogels as advanced materials in burn treatment and regenerative medicine.