Are surfactant molecules really oriented in the interface?

• Nasimul Gani ^[2] ; Jasmina Khanam ^[1]
  1. [1] Jadavpur University

     Jadavpur University

     India

     
  2. [2] Jodhpur Park Boys'' School, India
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 79, Nº 3, 2002, pág. 332
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • In aqueous medium, cetyltrimethylammonium bromide reacts with potassium hexacyanoferrate(III) and forms a precipitate by an ion-exchange reaction. But a bubble blown from an aqueous solution of polyoxyethylene sorbitan monooleate (Tween 80) and cetyltrimethylammonium bromide does not form a precipitate when floated on the surface of a potassium hexacyanoferrate(III) solution, as long as the bubble remains intact. This event is an example of definite orientation of cetyltrimethylammonium bromide molecules (surfactants) in the bubble interfaces.