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| - Layer-by-Layer Deposition of Poly(diallyldimethylammoniumchloride) and Sodium Silicate Multilayers on Silica-Sphere-CoatedSubstrate—Facile Method to Prepare a Superhydrophobic Surface
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| - A facile method for preparing a superhydrophobic surface was developed by layer-by-layer (LbL) deposition of poly(diallyldimethylammonium chloride) (PDDA)/sodium silicate multilayer films on a silica-sphere-coated substrate followed by a fluorination treatment. The as-fabricated surface has a water contact angle of 157.1° and a sliding angle of 3.1° and displays a self-cleaning property.
- A facile method for preparing a superhydrophobic surface was developed by layer-by-layer (LbL)deposition of poly(diallyldimethylammonium chloride) (PDDA)/sodium silicate multilayer films on asilica-sphere-coated substrate followed with a fluorination treatment. First, a silica-sphere-coated substratethat contains loosely stacked silica spheres of 600 and 220 nm was prepared and cross-linked with SiCl4.PDDA was then alternately assembled with sodium silicate on the silica-sphere-coated surface to preparea micro- and nanostructured hierarchical surface. Scanning electron microscopy (SEM) images verifythat the deposition of a 5-bilayer PDDA/sodium silicate multilayer film leads to the formation of a micro-and nanostructured hierarchical surface. After chemical vapor deposition of a layer of fluoroalkylsilane,a superhydrophobic surface with a water contact angle of 157.1° and sliding angle of 3.1° was successfullyfabricated. The easy availability of the materials and simplicity of this method might make thesuperhydrophobic surface potentially useful in a variety of applications.
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