Synthesis and Properties of a Sulfonic Acid-Containing Gemini Surfactant |
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Authors: | Jianyun Xie Gong Chen |
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Institution: | School of Material Science and Engineering, Beihang University , Beijing, China |
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Abstract: | A novel sulfonic acid-containing gemini surfactant, 6,6′-(butane-1,4-diylbis(oxy)) bis(3-nonylbenzenesulfonic acid), 9BA-4-9BA, was synthesized in high purity and high yield using a facile preparation pathway, and characterized by FTIR, 1H NMR, and elemental analysis. The content of two sulfonic acid groups was measured by the acid-base titration. DSC and TGA were used to reveal the thermal properties and the product purity. The surface properties of 9BA-4-9BA were evaluated by equilibrium surface tension measurement. It shows that its CMC was 0.65 mmol/L, while the C20 of 0.018 mmol/L was above two orders of magnitude lower than that of traditional monomeric surfactants such as SDS and SDBS, indicating excellent efficiency of micelle formation and reduced surface tension. |
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Keywords: | Characterization gemini surfactant surface properties synthesis |
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