Titanium alloy surface titania nanotube-polyvinylidene fluoride piezoelectric composite layer, preparation method and application thereof
By preparing a titanium dioxide nanotube-polyvinylidene fluoride piezoelectric composite layer on the surface of titanium alloy, the problems of antibacterial properties and energy dissipation of titanium alloy implants were solved, improving the osteogenic, antibacterial and stability properties of the implants, and achieving multifunctional modification.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- LANZHOU UNIV
- Filing Date
- 2026-02-13
- Publication Date
- 2026-07-17
AI Technical Summary
Existing titanium alloy implants have weak antibacterial properties, making them susceptible to infection. They also lack energy dissipation capabilities, resulting in poor implant stability, especially when subjected to overload, which can easily lead to bone resorption.
A titanium dioxide nanotube-polyvinylidene fluoride (PVDF) piezoelectric composite layer was prepared on the surface of a titanium alloy. Titanium dioxide nanotubes were formed as a transition layer by secondary anodic oxidation, and then a PVDF layer was cast. The piezoelectric properties were enhanced by corona polarization. The viscoelasticity and piezoelectric effect of PVDF were utilized to promote osteogenic and antibacterial properties.
It improves the implant's osteogenic capacity, antibacterial properties, energy dissipation performance, and biocompatibility, enhances the implant's long-term stability and resistance to infection, reduces stress concentration, and promotes osseointegration.
Smart Images
Figure CN122399100A_ABST