Bulletin of the Korean Chemical Society

  • 제12권4호
  • /
  • Pages.411-413
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  • 1991
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  • 0253-2964(pISSN)
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  • 1229-5949(eISSN)
대한화학회 (Korean Chemical Society)
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Salt Effects on the Critical Micelle Concentration and Counterion Binding of Cetylpyridinium Bromide Micelles

  • Jong Jae Chung (Department of Chemistry, College of Natural Sciences, Kyungpook National University) ;
  • Sang Wook Lee (Department of Chemistry, College of Natural Sciences, Kyungpook National University) ;
  • Joon Ho Choi (Department of Chemistry, College of Natural Sciences, Kyungpook National University)
  • 발행 : 1991.08.20
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초록

The effects of electrolyte on the critical micelle concentration (cmc) and bromide counterion binding in the micelles of cetylpyridinium bromide (CPB) have been investigated by UV spectroscopy and conductance measurements. Salts used in this study decreased cmc in the order $Cl^-\;<\;Br^-\;<\;NO3^-$ (which parallels the lyotropic series for the inorganic anions) and the effects on cmc followed the equation proposed by Shinoda: log cmc = A - B log (cmc + [NaX]). In the equation, constant B represents the counterion binding to the micelles at cmc and for the micelle of CPB at $25^{\circ}C$, B=80.76%. The association constant for the binding of counterions to long chain cations within micelles was also derived from the cmc values and counterion binding constant to the micelles.

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참고문헌

  1. Micellization, Solubilization and Microemulsions v.2 K. L. Mittal(ed.)
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  2. Micellization Behavior of Cationic Gemini Surfactants in Aqueous-Ethylene Glycol Solution vol.14, pp.4, 1991, https://doi.org/10.1007/s11743-011-1280-5
  3. Salt Effect on Mixed Micelle and Interfacial Properties of Conventional Cationic Surfactants and the Ionic Liquid Surfactant 1-Tetradecyl-3-methylimidazolium Bromide ([C14mim]Br) vol.16, pp.4, 1991, https://doi.org/10.1007/s11743-012-1431-3
  4. Light absorption in solutions of cetyltrimethylammonium and cetylpyridinium bromides vol.75, pp.3, 2013, https://doi.org/10.1134/s1061933x13030137