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Drainage and stability of foam films from aqueous solutions of a single nonionic surfactant C12E6

V. SIMULESCU1,* , E. MANEV2, GHE. ILIA1

Affiliation

  1. Department of Organic Chemistry, Institute of Chemistry of the Romanian Academy, 24 Mihai Viteazu, 300223 Timisoara, Romania
  2. Department of Physical Chemistry, Faculty of Chemistry, University of Sofia, 1, J. Bourchier Ave, 1164 Sofia, Bulgaria

Abstract

The drainage and stability of thin liquids foam films from aqueous solutions of the nonionic surfactant hexaethyleneglycol monododecyl ether (C12E6) is studied as a function of surfactant concentration and film size. The thinning rate is investigated in the range of total surfactant concentrations from 10-5 M to 10-4 M, at electrolyte concentration of 0.025 M. The value of the drainage coefficient (α) is determined for each film from its “thickness vs. time” dependence. The film thickness was calculated using microinterferometric method.

Keywords

Foam film, Drainage, Nonionic surfactant, C12E6, Ionic strength.

Citation

V. SIMULESCU, E. MANEV, GHE. ILIA, Drainage and stability of foam films from aqueous solutions of a single nonionic surfactant C12E6, Optoelectronics and Advanced Materials - Rapid Communications, 3, 2, February 2009, pp.155-159 (2009).

Submitted at: Jan. 15, 2009

Accepted at: Feb. 13, 2009