4th Generation Biomaterials Based on PVDF-Hydroxyapatite Composites Produced by Electrospinning: Processing and...

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Nanotechnology

Background:

• Biomaterials must mimic natural tissue properties for effective biological integration.
• Electrospinning is a key technique for creating micro- and nanofibers for tissue engineering scaffolds.
• Poly(vinylidene fluoride) (PVDF) and hydroxyapatite (HA) are promising materials for biomedical applications.

Purpose of the Study:

• To manufacture piezoelectric scaffolds using PVDF and HA nanoparticles.
• To explore the formation of the β-PVDF phase and HA dispersion within the scaffold.
• To evaluate the bioactivity and cytocompatibility of the composite membranes for biomedical use.

Main Methods:

• Electrospinning of PVDF and HA composite membranes.
• Incorporation of micro- and nanometric HA particles into the PVDF matrix.
• Characterization of the β-PVDF phase and HA dispersion.
• Assessment of apatite growth in simulated body fluid (SBF).
• In vitro cytotoxicity testing with human fibroblasts.

Main Results:

• Successfully produced composite membranes with micro- and nanofibers via electrospinning.
• Achieved good dispersion of HA particles and predominance of the β-PVDF phase.
• Observed significant apatite growth on the composite surface after SBF immersion.
• Demonstrated low cytotoxicity in human fibroblast cultures.

Conclusions:

• The electrospun PVDF/HA composite membranes exhibit promising piezoelectric, bioactive, and biocompatible properties.
• These multifunctional membranes show significant potential for bone substitution and wound healing applications.
• The developed biomaterial represents a viable candidate for advanced regenerative medicine strategies.