Modified Poly(ε-caprolactone) with Tunable Degradability and Improved Biofunctionality for Regenerative Medicine.

Area of Science:

• Biomaterials Science
• Polymer Chemistry
• Regenerative Medicine

Background:

• Poly(ε-caprolactone) (PCL) is widely used in permanent biomedical implants due to its biocompatibility and slow degradation.
• The slow degradation of PCL restricts its use in temporary biomedical applications requiring bioabsorbability.
• There is a need for PCL-based materials with tunable degradation rates and enhanced biofunctionality.

Purpose of the Study:

• To develop a method for modifying poly(ε-caprolactone) (PCL) membranes to achieve tunable degradation rates.
• To investigate the impact of chemical treatment on the morphology, mechanical properties, and biofunctionality of PCL membranes.
• To expand the potential applications of PCL in temporary and short-term biomedical uses.

Main Methods:

• Electrospinning was used to fabricate fibrous PCL membranes.
• Chemical modification of PCL membranes was performed using potassium permanganate for varying treatment durations (6–48 hours).
• Degradation studies, mechanical testing, and assessment of biofunctional features were conducted.

Main Results:

• Chemical treatment with potassium permanganate effectively altered the degradability of PCL membranes.
• A 48-hour treatment resulted in a 25% mass loss over 12 weeks, indicating controlled degradation.
• The modified PCL membranes retained their mechanical strength and demonstrated enhanced biofunctional properties.
• The fibrous morphology of the membranes was largely preserved after chemical treatment.

Conclusions:

• The developed approach allows for the tailoring of PCL properties, including degradation rate and biofunctionality.
• Chemically modified PCL membranes offer a promising platform for various biomedical applications, particularly those requiring controlled bioabsorbability.
• This method provides a pathway to expand the utility of PCL in the field of temporary biomedical devices and implants.