한국응용과학기술학회지 (Journal of the Korean Applied Science and Technology)

  • 제18권4호
  • /
  • Pages.249-253
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  • 2001
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  • 1225-9098(pISSN)
  • /
  • 2288-1069(eISSN)
한국응용과학기술학회 (The Korean Society of Applied Science and Technology)
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음이온/비이온 계면활성제의 미셀상승 효과

Synergistic Effect of Mixed Anionic/Nonionic Surfactant Micelles

  • Kwon, Soun-Il (School of Chemical Engineering, Chungbuk National University) ;
  • Kwack, Kwang-Soo (Department of Industry and Chemistry, Chungju National University) ;
  • Nam, Ki-Dae (School of Chemical Engineering, Chungbuk National University)
  • 발행 : 2001.12.31
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초록

A proposed method of determining the composition of mixed micelles in equilibrium with monomer of known composition is described. The systems were sodium ${\alpha}-sulfonated$ dodecanoyl ethyl esther (${\alpha}-SR_{12}Et$) or sodium dodecyl sulfate(SDS)-polyoxyethylene 23 lauryl ether (Brij 35) un water and in 0.1M sodium chloride solution at $25^{\circ}C$. This technique applies the Gibbs-Duhem equation to the mixed micelles, which is treated as a pseudophase. This proposed methodology, which needs only critical micelle concentration data as a function of monomer composition, is applied to an anionic/nonionic surfactant pair. The calculated monomer-micelle equilibrium is found to be very similar to the much-used regular solution for nonideal systems.

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