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Synergistic Behavior Between Zwitterionic Surfactant α-Decylbetaine and Anionic Surfactant Sodium Dodecyl Sulfate

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Journal of Surfactants and Detergents

Abstract

Here, we present experimental surface tension isotherms of mixed solutions of a zwitterionic surfactant α-decylbetaine (DB) and an anionic surfactant sodium dodecyl sulfate (SDS) in different molar ratios. These mixed solutions show a composition dependency with respect to both surface tension effectiveness and critical micelle concentration. The pseudo-regular solution theory has been used to evaluate the interaction parameters in the micelle, β m and at the surface, β s. The results revealed that the mixed solutions of DB/SDS behave synergistically in both surface tension reduction effectiveness and mixed micelle formation at all mole fractions investigated. The values of adsorption area per surfactant molecule at air/solution interface were estimated, which provides some useful information on evaluating the interaction between DB and SDS in mixed adsorbed monolayers. The solubilization behaviors of toluene in DB/SDS mixed solutions were also investigated to help in understanding the structure of mixed micelles of DB and SDS.

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Acknowledgments

Financial support from the China Key Technologies R&D Program in the 11th Five-Year Period (2007BAE52B01) are gratefully acknowledged.

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Authors and Affiliations

  1. State Key Laboratory of Fine Chemicals, Dalian University of Technology, 116012, Dalian, Liaoning, China

    Ze-yun Wang & Shu-fen Zhang

  2. School of Chemical and Material Engineering, Jiangnan University, 214122, Wuxi, Jiangsu, China

    Yun Fang & Li-yun Qi

  3. Nafine Chemical Industry Group Co. Ltd., 044000, Yuncheng, Shanxi, China

    Ze-yun Wang

Authors
  1. Ze-yun Wang
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  2. Shu-fen Zhang
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  3. Yun Fang
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  4. Li-yun Qi
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Correspondence to Shu-fen Zhang.

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Wang, Zy., Zhang, Sf., Fang, Y. et al. Synergistic Behavior Between Zwitterionic Surfactant α-Decylbetaine and Anionic Surfactant Sodium Dodecyl Sulfate. J Surfact Deterg 13, 381–385 (2010). https://doi.org/10.1007/s11743-009-1154-2

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  • DOI: https://doi.org/10.1007/s11743-009-1154-2

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