Charge number effect on the miscibility of inorganic salt and surfactant in adsorbed film and micelle: Inorganic salt-dodecylammonium chloride mixtures

Hidemi Iyota, Takako Tomimitsu, Makoto Aratono

研究成果: ジャーナルへの寄稿学術誌査読

5 被引用数 (Scopus)

抄録

The effect of inorganic salts with different charge numbers of cations on the adsorption and micelle formation of dodecylammonium chloride (DAC) was clarified by applying the thermodynamic treatment of surfactant mixtures to mixtures of DAC with calcium and lanthanum chlorides and comparing the results with those of the sodium chloride-DAC mixture in the previous study. Surface tension of aqueous solutions of the salt-DAC mixture was measured as a function of the total molality of the mixture and the mole fraction of DAC in the mixture at 298.15 K under atmospheric pressure. Judging from the phase diagrams of adsorption and micelle formation obtained from the surface tension measurement, dodecylammonium cations expel inorganic cations from the adsorbed film and micelle and the repulsive interaction between dodecylammonium and inorganic cations increases with increasing charge number of the inorganic cation.

本文言語英語
ページ(範囲)330-334
ページ数5
ジャーナルJournal of Colloid And Interface Science
302
1
DOI
出版ステータス出版済み - 10月 1 2006

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 生体材料
  • 表面、皮膜および薄膜
  • コロイド化学および表面化学

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