Chitosan-Polyvinyl Alcohol Nanocomposites for Regenerative Therapy

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Nanotechnology

Background:

• Tissue injuries create infection pathways, hindering natural healing.
• Essential oils (EOs) offer antimicrobial benefits without resistance.
• Clove oil (CEO) and Chitosan (CS) possess significant antimicrobial properties.

Purpose of the Study:

• To synthesize and evaluate novel composite membranes for subdermal tissue regeneration.
• To incorporate clove oil (CEO) and nanobioglass (n-BGs) into chitosan (CS)/polyvinyl alcohol (PVA)/glycerol (Gly) membranes.
• To assess the antimicrobial, thermal, chemical, morphological, biocompatibility, and biodegradability characteristics of the developed membranes.

Main Methods:

• Synthesis of four composite membrane formulations (CS/PVA/Gly/CEO/n-BGs).
• Fourier-transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) for chemical and structural analysis.
• Scanning electron microscopy (SEM) for morphological examination.
• Histological analysis of implanted membranes in vivo over 60 days.

Main Results:

• Successful polymer blending and CEO entrapment confirmed by FTIR and XRD.
• CEO incorporation altered the composite's crystal structure.
• SEM revealed smooth surfaces with CEO, contrasting porous n-BG morphologies.
• Histology demonstrated excellent biocompatibility and biodegradability within 60 days, with connective tissue infiltration supporting reabsorption.

Conclusions:

• The synthesized CS/PVA/Gly/CEO/n-BG composite membranes show promise for subdermal tissue regeneration.
• The materials exhibit effective antimicrobial properties and biocompatibility.
• The biodegradability and tissue integration support their application in regenerative medicine.