Thermodynamic study on the adsorption of dodecylammonium chloride at water/hexane interface

Makoto Aratono, Michio Yamanaka, Norihiro Matubayasi, Kinsi Motomura, Ryohei Matuura

研究成果: ジャーナルへの寄稿学術誌査読

50 被引用数 (Scopus)


The adsorption of dodecylammonium chloride (DAC), which is a cationic surfactant, at water/hexane interface has been studied by measuring the interfacial tension as functions of temperature and pressure at various concentrations of DAC in the aqueous solution. By applying the thermodynamic treatment developed previously to the experimental results, the thermodynamic quantity changes associated with interface formation and corresponding partial molar quantity changes of DAC have been evaluated. These values have been compared with those of sodium dodecyl sulfate (SDS), which is an anionic surfactant. It has been observed that the dependence of the entropy change on temperature and that of the volume change on pressure are remarkable. It has also been observed that DAC and SDS differ appreciably in the values of the partial molar entropy and energy of adsorption while they have similar values in the partial molar volume change of adsorption under atmospheric pressure.

ジャーナルJournal of Colloid And Interface Science
出版ステータス出版済み - 4月 1980

!!!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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