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Interaction of a Novel Anionic Gemini Surfactant Containing a Triazine Ring with Cetyltrimethylammonium Bromide in Aqueous Solution
Author(s) -
Hu Zhiyong,
Wang Liqiong,
Guo Jianfeng,
Cao Duanlin,
Chang Jing,
Fan Li
Publication year - 2015
Publication title -
journal of surfactants and detergents
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.349
H-Index - 48
eISSN - 1558-9293
pISSN - 1097-3958
DOI - 10.1007/s11743-014-1610-5
Subject(s) - chemistry , pulmonary surfactant , mole fraction , aqueous solution , bromide , surface tension , critical micelle concentration , micelle , adsorption , monolayer , triazine , inorganic chemistry , nuclear chemistry , organic chemistry , thermodynamics , biochemistry , physics
The interaction between a novel anionic gemini surfactant containing a triazine ring, denoted as C8‐G, and cetyltrimethylammonium bromide (CTAB) has been investigated in aqueous solution. The surface tension vs log. molar concentration plots of the individual surfactants and their mixtures were measured at different temperatures (298, 303, 308, and 313 K) by the drop volume method. The surface properties and the interaction parameters of the adsorption monolayer and the mixed micelle were obtained from the plot. The results showed that the CMC of the C8‐G/CTAB mixture reached a minimum value of 3.20 × 10 −5 mol/L when α G (the mole fraction of C8‐G in the mixed system) was 0.7 at 308 K, and the minimum γ CMC was 28.1 mN/m obtained for the molar ratio of 0.9 at 308 K. Interaction between the two components was strongest (β σ = 14.158 ,β m = 11.851 ) when α G was 0.7 at 303 K. All the C8‐G/CTAB mixtures exhibited synergism in both surface tension reduction efficiency and mixed micelle formation except when the mole fraction of C8‐G ( α G ) was 0.1, 0.5 and 0.9 at 313 K, and became greatest for the molar ratio of 0.7 at 303 K. The C8‐G/CTAB mixtures exhibited synergism in surface tension reduction effectiveness for all the complex ratios at 303 K, α G = 0.1, 0.3, 0.9 at 308 K and α G = 0.7 at 313 K, whereas the other surfactant mixtures did not show this synergism.