Preparation of VO_x/SiO₂-dope Copolymer Super-Slippery Surface Composites

In this study, VO_x was prepared by oxalic acid and vanadium pentoxide under nitrogen atmosphere and SiO₂ was grown on the surface of VO_x. Block copolymer (PCL-b-PDMS-b-PCL) was synthesized by hydroxy terminated poly(dimethylsiloxane) and caprolactone, and the composite material containing inorganic particles was obtained by blending VO_x/SiO₂ with PCL-b-PDMS-b-PCL. The porous film was constructed by breathing pattern method, and the supersmooth surface was obtained by injecting lubricating oil into the porous film. The composite was tested by Fourier transform infrared spectroscopy, hydrogen NMR spectroscopy, scanning electron microscopy, contact angle and anti-bacterial adhesion. The results showed that PCL-b-PDMS-b-PCL was successfully synthesized, and the prepared composite material containing inorganic particles had excellent superslippery properties after oil injection, and the sliding angle was 2°.