Super-Hydrophobic Surfaces via Micrometer-Scale Templated Pillars

Abstract

The fabrication of enhanced hydrophobic surfaces via simple and inexpensive means will be discussed. Regular arrays of microscale pores were prepared in polymer matrices via the spontaneous assembly of water-vapor condensation, the so-called breath figure method. Using these regular arrays of pores as templates, the analogous array of pillars (inverse pores) was transferred to polymeric films. These microtextured surfaces have greatly enhanced the hydrophobicity of the polymer when measured by the contact angle. This method of producing super-hydrophobic textured surfaces should be amenable to high-throughput, low-cost manufacturing of many polymeric surfaces.

Superhydrophobic surfaces: From natural to biomimetic to functional

“…Self-assembly and layer-by-layer are other simple and inexpensive methods to prepare micro-and nano dual-scale superhydrophobic surface structures, as well as the obtained structures can be finely controlled [96][97][98][99][100][101][102][103][104][105][106][107]. For example, Jiang et al [96] prepared a conducting and superhydrophobic rambutan-like hollow spheres of polyaniline by means of a self-assembly method in the presence of perfluorooctane sulfonic acid (PFOSA), which is employed as a dopant and soft template.…”

“…9a) [101]. Rawlett et al [102] reported a superhydrophobic surface with regular arrays of microscale pores in polymer matrices via the spontaneous assembly of water-vapor condensation, the so-called breath figure method (Fig. 9b), which is a facile, a low-cost alternative, and robust method to manufacture hierarchically ordered superhydrophobic surfaces, compared to traditional fabrication techniques.…”

Droplet condensation on polymer surfaces: A review

“…162 Zander et al transferred arrays of pillars (inverse pores) to polymeric films by using them as templates to obtain textured silicone pillars and breath figure templating was proposed as a new technique for fabrication of hydrophobic surfaces, providing a low cost alternative to customary techniques. 163 Hernandez-Guerrero et al applied graft copolymerization and used PS-PHEMA based honeycomb membranes and a thermoresponsive polymer, PNIPPAm, inside the pores to form a membrane to be used in fibroblast cell attachment. The interior of the pores of the membranes was rich in PNIPAAm while the surface was made of PS.…”

Preparation and characterization of polystyrene-b-poly(2-vinylpyridine) coordinated to metal or metal ion nanoparticles

“…Coordination of metal/metal ion improves the thermal stability of the host polymer [18][19][20][21][22]. Zander et al [22], studied the thermal characterization of poly(4-vinylpyridine) crosslinked with metal salts and suggested that Tg enhancement was highly dependent upon the type and loading of the metal salt.…”

“…Zander et al [22], studied the thermal characterization of poly(4-vinylpyridine) crosslinked with metal salts and suggested that Tg enhancement was highly dependent upon the type and loading of the metal salt. Wu et al [21] investigated Tg value of poly(4-vinylpyridine) copolymer and its complex with transition metal ion and determined that Tg increases with increasing the metal ions content.…”