From Superhydrophobic to Superhydrophilic Surfaces Tuned by Surfactant Solutions
Resource
Applied Physics Letters 91: 094108
Journal
Applied Physics Letters
Journal Issue
094108
Pages
-
Date Issued
2007
Date
2007
Author(s)
Abstract
The wettability of hydrophobic surfaces is generally improved by surfactant solutions. The wetting behavior of superhydrophobic surfaces can be classified into two types, in terms of the variation of contact angle with surfactant concentration cs. Contact angle is controlled by surface tension for common linear surfactants and becomes independent of cs as cs>critical micelle concentration. Consequently, superhydrophobic surfaces remain in hydrophobic range, as reported. However, for branch-tailed surfactants such as sodium-bisethylhexylsulfosuccinate and didodecyldimethylammonium bromide, superhydrophobic surfaces can turn superhydrophilic by increasing cs owing to continuous reduction of solid-liquid interfacial tension. The superhydrophobicity is recoverable simply by water rinsing.
SDGs
Type
journal article
File(s)![Thumbnail Image]()
Loading...
Name
28.pdf
Size
220.35 KB
Format
Adobe PDF
Checksum
(MD5):2bff645a1d9878602f4786a333db4efe