title: Superhydrophobic polyethylcyanoacrylate coatings. Contact area with water measured by Raman spectral images, contact angle and Cassie-Baxter model.
abstract: Apolar fibers wired into a mesh-like microstructure forming a coating with a contact angle larger than 160° and fabricated by polycyanoacrylate polymerization are described. Interconnected fibers with diameters measuring approximately 5 μm are formed by texturized linear or folded nanowires. The structure forming the deposited film occupies ~1.5% of the coating's top geometric area. This value agrees with the water/coating contact area given by the Cassie-Baxter contact-angle model (~1.5%). The spatial distribution of the surface in contact with water was determined by Raman spectral imaging (~1.5%) using the polycyanoacrylate lines and by scanning electron microscopy (~2.0%).
authors.affiliation: Laboratório de Nanoestruturas e Interfaces, Instituto de Física, UNICAMP, 13083-859 Campinas, SP, Brazil.
authors.forename: L O
authors.initials: LO
authors.lastname: Bonugli
authors.forename: M V Puydinger
authors.initials: MV
authors.lastname: dos Santos
authors.forename: E F
authors.initials: EF
authors.lastname: de Souza
authors.forename: O
authors.initials: O
authors.lastname: Teschke