Wetting of PTFE Surface by Mixed Surfactant Solutions in the Presence of Electrolyte

Abstract

Improving the wettability of hydrophobic surfaces has wide ranges of applications, and mixed surfactant systems are promising to improve the interfacial phenomena including
wetting. In this study mixture of cationic (Cetyltrimethyl ammonium bromide, CTAB) and non-ionic (Igepal-630) surfactants have been studied and compared with the pure surfactants.The nonideal behaviour of the mixture indicates the presence of synergism. Another point of attraction for the investigators has been the effect of additives in surfactant solution. Presence of electrolyte enhances the wetting property very effectively, as proved from previous
studies. This report mainly focuses on the change in CMC values as well as wetting property of a mixed surfactant system. It is observe the use of electrolyte, further reduce the CMC than the mixed surfactant systems. The main objective of this study is to provide insight on the
wetting of hydrophobic surface in the presence of mixed surfactant system + electrolyte.