Jump to main content
Jump to site search

Issue 2, 2008
Previous Article Next Article

Nematic phases observed in amphiphilic polyelectrolyte–surfactant aggregate solutions

Author affiliations

Abstract

A lyotropic phase transition is observed in a water-soluble polyelectrolyte–surfactant aggregate system (polymerized cetyltrimethylammonium 4-vinylbenzoate, or pC16TVB). Unlike other oppositely-charged polyelectrolyte–surfactant aggregates at the stoichiometrically-matched charge point, these aggregates do not precipitate, and instead form isotropic–nematic biphasic solutions in water. The aggregates maintain amphiphilic behavior through the phase transition and appear to maintain the structure observed in dilute solution – that of rod-like aggregates (L/d ∼ 35 with d = 4 nm). Rheology, microscopy and small-angle neutron scattering are used to verify the nature of the phase transition and structure of the mesogen. The phase transition occurs at a concentration higher than that predicted by simple theory; however, flexibility, charge repulsion and polydispersity must be considered in this system.

Graphical abstract: Nematic phases observed in amphiphilic polyelectrolyte–surfactant aggregate solutions

Back to tab navigation

Publication details

The article was received on 26 Sep 2007, accepted on 13 Nov 2007 and first published on 27 Nov 2007


Article type: Paper
DOI: 10.1039/B714859C
Soft Matter, 2008,4, 286-293

  •   Request permissions

    Nematic phases observed in amphiphilic polyelectrolyte–surfactant aggregate solutions

    D. M. Kuntz and L. M. Walker, Soft Matter, 2008, 4, 286
    DOI: 10.1039/B714859C

Search articles by author

Spotlight

Advertisements