A fast degrading odd-odd aliphatic polyester-5,7 made by condensation polymerization for biomedical applications

Area of Science:

• Polymer Chemistry
• Materials Science
• Biotechnology

Background:

• Enzymatic degradation of polyesters is crucial for developing sustainable materials.
• Aliphatic polyesters offer tunable properties for various applications.
• Polycaprolactone (PCL) is a widely studied biodegradable polyester.

Purpose of the Study:

• To synthesize and characterize a novel aliphatic all-odd-polyester-5,7.
• To investigate the enzymatic degradation, crystallization behavior, and thermal stability of polyester-5,7.
• To compare polyester-5,7 with polycaprolactone (PCL) regarding its properties and degradation rate.

Main Methods:

• Polycondensation synthesis of polyester-5,7 from pimelic acid and pentanediol.
• Structural characterization using 1D and 2D NMR spectroscopy.
• Property analysis via differential scanning calorimetry, WAXD, SEM, GPC, and terahertz time-domain spectroscopy.

Main Results:

• Polyester-5,7 was successfully synthesized and characterized.
• It exhibits crystallization behavior and thermal properties comparable to PCL.
• Terahertz spectroscopy determined the glass transition temperature, unachievable by conventional methods.
• Polyester-5,7 demonstrated a significantly faster enzymatic degradation rate than PCL.
• Degradation initiated via surface erosion, revealing a fibrillar structure.

Conclusions:

• Polyester-5,7 is a promising fast-degrading enzymatic material.
• Its properties make it a potential alternative to PCL in biodegradable applications.
• Further research can explore its use in biomedical or environmental fields.