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Synthesis and Physico‐Chemical Properties of Sodium 3‐Oxo‐2‐(3‐(4‐sulphonatophenyl)triaz‐2‐enyl)octadecanoate Anionic Surfactant
Author(s) -
ElSharkawy ElSayed A.,
Mead Attia I.,
Abdel Reheim Mohamed A. M.,
Tolba Ahmed M.
Publication year - 2016
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/s11743-016-1810-2
Subject(s) - chemistry , surface tension , critical micelle concentration , pulmonary surfactant , adsorption , thermodynamics of micellization , gibbs isotherm , counterion , sodium , inorganic chemistry , micelle , aqueous solution , organic chemistry , thermodynamics , ion , biochemistry , physics
The novel anionic surfactant sodium 3‐oxo‐2‐(3‐(4‐sulphonatophenyl)triaz‐2‐enyl)octadecanoate (SSTO) was prepared from renewable raw materials; glycine and palmitic acid. Surface and bulk properties of SSTO were investigated by surface tension and electrical conductivity techniques at 298, 308, 318 and 328 K. Surface properties including critical micelle concentration (CMC), maximum surface excess concentration ( Γ max ), minimum area per molecule ( A min ), surface tension at CMC ( γ CMC ), effectiveness of surface tension reduction ( Π CMC ), efficiency of surface adsorption ( pC 20 ), and degree of counterion dissociation ( α ) were determined. The thermodynamic parameters of micellization (Δ G° mic , Δ H° mic and Δ S° mic ) and adsorption (Δ G° ad , Δ H° ad and Δ S° ad ) were also investigated at 298, 308, 318 and 328 K. The effect of 3 wt% n ‐propanol, n ‐butanol and n ‐pentanol on surface tension and conductivity at 298 K was also determined.