Preparation and characterization of superhydrophobic surfaces based on hexamethyldisilazane-modified nanoporous alumina.

ABSTRACT: Superhydrophobic nanoporous anodic aluminum oxide (alumina) surfaces were prepared using treatment with vapor-phase hexamethyldisilazane (HMDS). Nanoporous alumina substrates were first made using a two-step anodization process. Subsequently, a repeated modification procedure was employed for efficient incorporation of the terminal methyl groups of HMDS to the alumina surface. Morphology of the surfaces was characterized by scanning electron microscopy, showing hexagonally ordered circular nanopores with approximately 250 nm in diameter and 300 nm of interpore distances. Fourier transform infrared spectroscopy-attenuated total reflectance analysis showed the presence of chemically bound methyl groups on the HMDS-modified nanoporous alumina surfaces. Wetting properties of these surfaces wer

SUBMITTER: Tasaltin N 

PROVIDER: S-EPMC3212001 | biostudies-literature | 2011 Aug

REPOSITORIES: biostudies-literature