Abstract
Researchers are excited about the latest advances in the long needle electrospinning and the bubble electrospinning, which have triggered wide-spread concern. This paper offers a new angle for modifying both methods, the former is developed into a modified one with an auxiliary helix needle, which is used for fabrication of super-hydrophobic polyvinylidene difluoride-copolypolyhexafluoropropylene nanofiber membrane (PH-E membrane for short), and the latter is extended to a bubble electrostatic spaying, which is used for spraying PDMS microspheres on the PH-E membrane surface, and the resultant membrane is called as the PDMS-PH-E membrane. Both membranes hydrophobicity, surface roughness, porosity, and wetting property are measured and compared, and the drop impact dynamical property of the PDMS-PH-E membrane has opened the path for a new way to design of self-clearing and anti-fouling and anti-wetting surfaces. Far-reaching applications of the membranes include energy harvesting devices and sensors. We anticipate this article to be a starting point for more sophisticated study of the bubble electrostatic spaying and PDMS-PH-E membrane advanced applications.
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