Abstract
We describe a method to form hydrophobic surfaces using PHBV (Poly (hydroxybutyrate-co-hydroxyvalerate))—a kind of intrinsically hydrophilic material. The concentration of polymer solutions was varied to control the surface morphology and resultant wetting property. The as-prepared films were characterized by micro-scale valley-and-hill structure, which was formed by aggregating of electrospun beads. The bead morphology changed from smooth to porous and popcorn-like with decreased concentrations. The shape of water droplet on these surfaces had contact angles ranging from 110.7 to 158.1°, with a maximum standard deviation of 2.5°. It was found that both the micro and nanostructure were important to create a superhydrophobic surface.
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Zhu, M., Zuo, W., Yu, H. et al. Superhydrophobic surface directly created by electrospinning based on hydrophilic material. J Mater Sci 41, 3793–3797 (2006). https://doi.org/10.1007/s10853-005-5910-z
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DOI: https://doi.org/10.1007/s10853-005-5910-z