Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Solubilization of Alcohols in Aqueous Solution of Cetylpyridinium Chloride

  • Chung Jong Jae (Department of Chemistry, College of Natural Sciences, Kyungpook National University) ;
  • Lee Sang Wook (Department of Chemistry, College of Natural Sciences, Kyungpook National University) ;
  • Kim Young Chul (Department of Chemistry, College of Natural Sciences, Kyungpook National University)
  • Published : 1992.12.20
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Abstract

The critical micelle concentration (CMC) values of cetylpyridinium chloride (CPC) in some alcohol-aqueous solutions were determined by UV-Vis spectroscopy at 25$25^{\circ}C$. The CMC of CPC was increased with the addition of methanol and ethanol, while with the addition of propanol it was decreased because of the solubilization of propanol into the micelle of CPC. The ratio (${\beta}$) of the number of counterions to that of surfactant ions associated into micelles in alcohol (methanol, ethanol and propanol) aqueous solutions was measured by using the Shinoda $equation^{17}$. The ratio of counterion binding to the CPC micelles in methanol-and ethanol-water mixtures was larger than in pure water, while the ratio in propanol-water mixture might be much decreased.

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  2. Effect of Counterions and Temperature on the Association and Partition Balances of Hexadecylpyridinium Halides in Aqueous Solutions vol.42, pp.5, 2005, https://doi.org/10.3139/113.100270
  3. The Effect of Methanol on the Micellar Properties of Dodecyltrimethylammonium Bromide (DTAB) in Aqueous Medium at Different Temperatures vol.19, pp.1, 1992, https://doi.org/10.1007/s11743-015-1755-x
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