Search Results

You are looking at 1 - 1 of 1 items for :

  • "zitterionic surfactants" x
  • Refine by Access: All Content x
Clear All

Application of the calorimetry to studies of colloidal phenomena

Enthalpies of micellization and enthalpies of adsorption of zwitterionic surfactants onto silica gel

Journal of Thermal Analysis and Calorimetry
Authors: J. Zajac, M. Chorro, C. Chorro, and S. Partyka


The importance of calorimetric methods in studies of colloidal phenomena is illustrated by the analysis of the experimental enthalpies of dilution and adsorption for aqueous solutions of three zwitterionic surfactants: 1–12 betaine, 3–12 betaine, and 3–12 sulfobetaine. The batch microcalorimeter ‘Montcal 3’, used to obtain these data, is described. The molar enthalpies of micellization and the differential molar enthalpies of adsorption onto silica gel are shown to be functions of the headgroup hydrophilicity, fixed by the type of negatively charged center and the number of methylene groups separating the charged sites.

Restricted access