Original scientific paper

Micelle Formation by Tritons in Aqueous Solutions

N. Stubičar ; Department of Physical Chemistry, Faculty of Science, University of Zagreb, P.O. Box 163, 41001 Zagreb, and Institute of Immunology, Zagreb, Croatia, Yugoslavia
J. J. Petres ; Department of Physical Chemistry, Faculty of Science, University of Zagreb, P.O. Box 163, 41001 Zagreb, and Institute of Immunology, Zagreb, Croatia, Yugoslavia

Abstract

The critical micellar concentrations and the mass-average
micellar molecular masses of non-ionic surfactants, i. e. the members
of the homologous series of t-octyl-phenoxy-polyethoxy-ethanols
: Triton X-114, Triton X-100, Triton X-305, Triton X-405, and
Triton X-705 have been determined by means of light scattering
and other methods at 298 K. Variations in aggregation number
from 6 to 220 (or micellar molecular mass from 19,000 to 120,000)
have been found, depending on the length of monomeric molecule.
These quantities, as well as c.m.c./mol dm-3, decrease with the
increasing length of the hydrophilic part of the molecule, as has
already been reported for other non-ionic surfactants.

Keywords

Hrčak ID:

194314

URI

https://hrcak.srce.hr/194314

Publication date:

31.12.1981.

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