Interaction of nonionic surfactant AEO9 with ionic surfactants

Abstract

Abstract:The interaction in two mixtures of a nonionic surfactant AEO 9 (C 12 H 25 O(CH 2 CH 2 O) 9 H) and different ionic surfactants was investigated. The two mixtures were AEO 9 /sodium dodecyl sulfate (SDS) and AEO 9 /cetyltrimethylammonium bromide (CTAB) at molar fraction of AEO 9 , 9 AEO =0.5. αThe surface properties of the surfactants, critical micelle concentration (CMC), effectiveness of surface tension reduction (γ CMC ), maximum surface excess concentration (Γ max ) and minimum area per molecule at the air/solution interface (A min ) were determined for both individual surfactants and their mixtures. The significant deviations from ideal behavior (attractive interactions) of the nonionic/ionic surfactant mixtures were determined. Mixtures of both AEO 9 /SDS and AEO 9 /CTAB exhibited synergism in surface tension reduction efficiency and mixed micelle formation, but neither exhibited synergism in surface tension reduction effectiveness.

Mixing Effect of Anionic and Nonionic Surfactants on Micellization, Adsorption and Partitioning of Nonionic Surfactant

“…Furthermore, with the increase in mole fraction of the nonionic surfactant, the CMCs decrease continuously from the CMC of pure anionic surfactant down to the CMC of pure nonionic surfactant. The experimental CMCs were found lower than the ideal mixing CMCs (Janczuk et al, 1995;Zhu and Feng, 2003;Zhou and Zhu, 2004;Owoyomi, 2005;Zaho et al, 2005;Joshi et al, 2005;Yang et al, 2005;Zhang et al, 2005;Zhao et al, 2007).…”

“…Generally, several studies had investigated surfactant mixtures of nonionic and anionic surfactants. Most of these studies focused on synergism in critical micelle concentration obtained upon mixing (Janczuk et al, 1995;Owoyomi, 2005;Joshi et al, 2005;Zhang et al, 2005;Mata, 2006;. Other studies deal with solubilization of organic compounds in anionic-nonionic surfactant mixtures (Zhu and Feng, 2003;Zhou and Zhu, 2004;Zhao et al, 2005;Zhou and Zhu, 2005;Zhao et al, 2007).…”

Surface active and thermodynamic properties of some surfactants derived from locally linear and heavy alkyl benzene in relation to corrosion inhibition efficiency

“…But, in common, one process may be predominating than the other one [28]. Both adsorption and micellization thermodynamic functions were calculated and summarized in Tables 7 and 8 and the general behavior was shown in Fig.…”

Synergistic Effect on Wettability of Mixtures of Amine Oxides, Alkylpolyglucosides, and Ethoxylated Fatty Alcohols

“…Hagenhoff et al [13] used two surfactants, namely sodium dodecyl sulfate and sodium bis-(2-ethylhexyl)-sulfosuccinate, to achieve an additional reduction in surface tension arising from synergistic interactions between the surfactants and dissolved soil organic matter. Also, aqueous solutions of anionic (SDS) and nonionic (tert-octylphenol ethoxylate with 9.5 EO) surfactant mixtures were evaluated for possible synergism in critical micelle concentration [14] or mixtures of nonionic and different ionic surfactants [15].…”