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Surface Activity Properties and Aggregation Behaviors of Partially Fluorinated Gemini Surfactants in Aqueous Solution
Author(s) -
Lv Yan,
Chen Long,
Liu Huanfang,
Zhang Saiping,
Wang Minggang,
Tan Yebang
Publication year - 2017
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/s11743-017-1946-8
Subject(s) - chemistry , surface tension , pulmonary surfactant , critical micelle concentration , aqueous solution , gibbs isotherm , dynamic light scattering , micelle , aggregation number , analytical chemistry (journal) , chemical engineering , chromatography , thermodynamics , nanoparticle , biochemistry , physics , engineering
The surface activity and aggregation behavior of partially fluorinated gemini surfactant N , N ′‐bis(3‐perfluorohexyl‐2‐hydroxypropyl)‐ N , N ′‐dipropanesulfonylhexylenediamine (N‐6‐Sul) was studied by surface tension, resonance light scattering and fluorescence spectra measurements. The critical micelle concentration (CMC) values obtained by the three methods are in good agreement. The surface activity parameters such as the effectiveness of surface tension reduction ( Π cmc ), the maximum surface excess concentration ( Γ max ) and the minimum surface area per molecule ( A min ) were obtained through surface tension curves. The effects of pH, inorganic salts and temperature on the surface activity were also investigated. The morphology and size of the aggregates of N‐6‐Sul were examined by transmission electron microscopy (TEM). The results show that the partially fluorinated gemini surfactant N‐6‐Sul has many advantages such as high surface activity, low CMC value, great salt tolerance and temperature resistance.