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Bioactive and Biodegradable Polycaprolactone-Based Nanocomposite for Bone Repair Applications.

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Summary

This study enhanced polycaprolactone (PCL) nanocomposites with baghdadite, improving mechanical strength, thermal stability, and bioactivity. The resulting materials show promise for biomedical applications due to increased cell viability and favorable degradation.

Keywords:
baghdaditebiological propertiesbone tissue engineeringcomposite filmsmechanical propertiesnanocompositepolycaprolactonesolvent casting methodthermal properties

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Area of Science:

  • Materials Science
  • Biomaterials Engineering
  • Nanotechnology

Background:

  • Polycaprolactone (PCL) is a biodegradable polymer with potential for biomedical applications.
  • Enhancing PCL's mechanical, thermal, and bioactive properties is crucial for advanced applications.
  • Baghdadite is a novel bioactive ceramic with potential as a reinforcing agent.

Purpose of the Study:

  • To investigate the structure-property relationships of PCL nanocomposites reinforced with baghdadite nanoparticles.
  • To evaluate the mechanical, thermal, and in vitro biological performance of these novel nanocomposites.
  • To assess the potential of baghdadite as a bioactive reinforcing agent for PCL.

Main Methods:

  • Baghdadite nanoparticles synthesized via sol-gel method.
  • PCL nanocomposite films prepared using solvent casting.
  • Mechanical testing (tensile strength, elastic modulus), thermal analysis (degradation temperature), simulated body fluid (SBF) immersion, cell viability assays (MG63 cells), and degradation studies in phosphate-buffered saline (PBS).

Main Results:

  • Incorporation of baghdadite significantly improved tensile strength (16 to 21 MPa) and elastic modulus (149 to 194 MPa).
  • Thermal stability increased, with degradation temperature rising from 388 °C to 402 °C.
  • Nanocomposites exhibited apatite layer formation in SBF, enhanced MG63 cell viability (103% to 136%), and showed a favorable degradation rate (mass loss 2.63% to 4.08%).

Conclusions:

  • Baghdadite reinforcement enhances the mechanical and thermal properties of PCL nanocomposites.
  • The developed nanocomposites demonstrate excellent bioactivity, including apatite formation and improved cell viability.
  • These findings highlight the potential of baghdadite-reinforced PCL as a promising biodegradable-bioactive material for biomedical applications.