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Surface and Aggregation Properties of Synthesized Cetyl Alcohol Based Bis‐Sulfosuccinate Gemini Surfactants in Aqueous Solution
Author(s) -
Singh Vinayika,
Tyagi Rashmi
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/s11743-015-1759-6
Subject(s) - chemistry , critical micelle concentration , pulmonary surfactant , thermodynamics of micellization , surface tension , micelle , aqueous solution , adsorption , aggregation number , fourier transform infrared spectroscopy , gibbs isotherm , infrared spectroscopy , analytical chemistry (journal) , inorganic chemistry , nuclear chemistry , organic chemistry , chemical engineering , biochemistry , physics , quantum mechanics , engineering
A series of cetyl alcohol based anionic bis‐sulfosuccinate gemini surfactants (BSGSCA1,4; BSGSCA1,6 and BSGSCA1,8) with different spacer lengths was prepared using dibromoalkanes. The surfactant structure was elucidated using elemental analysis, Fourier transform infrared spectroscopy (FT‐IR) and nuclear magnetic resonance spectroscopy (NMR). Surface tension measurements were used to determine the critical micelle concentration (CMC), the surface tension at the CMC ( γ CMC ), surface pressure at the CMC ( π CMC ) and efficiency of adsorption (pC20). On the basis of surface studies, the CMC and γ CMC decreases with increasing length of the spacer group. The micelle aggregation number, determined by fluorescence quenching studies, increases with increasing surfactant concentration above the CMC. The micropolarity in the micelle increases with increasing length of the spacer and decreases with increasing surfactant concentration.