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Oppositely charged surfactant-polyelectrolyte systems as model systems for mesoscopically ordered surfactant-silicates

Friman, Rauno ; Backlund, Sune ; Hassan, Osman ; Alfredsson, Viveka LU and Linden, Mika (2006) In Colloids and Surfaces A: Physicochemical and Engineering Aspects 291(1-3). p.148-154
Abstract
Due to the strongly kinetic nature of the chemical events leading to the formation of mesoscopically ordered inorganic-surfactant composite materials, detailed studies on the interdependency between the degree of inorganic condensation and the co-operative self-assembly is difficult to perform. We have therefore undertaken a study where organic polyelectrolytes are used as models for the inorganic oligomeric/polymeric species and studied the phase behavior of negatively charged polyacrylate positively charged surfactant complexes in aqueous solution as a function of polyelectrolyte molar mass. Dodecyltrimethyl ammonium chloride was used as the surfactant. The toluene solubilization capacity of the complexes were also determined, and a... (More)
Due to the strongly kinetic nature of the chemical events leading to the formation of mesoscopically ordered inorganic-surfactant composite materials, detailed studies on the interdependency between the degree of inorganic condensation and the co-operative self-assembly is difficult to perform. We have therefore undertaken a study where organic polyelectrolytes are used as models for the inorganic oligomeric/polymeric species and studied the phase behavior of negatively charged polyacrylate positively charged surfactant complexes in aqueous solution as a function of polyelectrolyte molar mass. Dodecyltrimethyl ammonium chloride was used as the surfactant. The toluene solubilization capacity of the complexes were also determined, and a clear dependency on the (poly)electrolyte molar mass was found. The results can be used to explain many of the observed features observed for evolving silicate-surfactant under kinetic control. It is suggested that electrostatic screening effects dominate at low degrees of silicate condensation, while the stabilizing effect of the polyelectrolyte becomes increasingly dominant upon further silicate condensation. (c) 2006 Elsevier B.V. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
phase behavior, polyelectrolyte, surfactant, mesophase formation
in
Colloids and Surfaces A: Physicochemical and Engineering Aspects
volume
291
issue
1-3
pages
148 - 154
publisher
Elsevier
external identifiers
  • wos:000242873900020
  • scopus:33750971114
ISSN
0927-7757
DOI
10.1016/j.colsurfa.2006.07.031
language
English
LU publication?
yes
id
2f4f6809-b9a5-4058-8fd6-39b77a7b41dd (old id 682323)
date added to LUP
2016-04-01 15:59:02
date last changed
2020-01-12 18:55:21
@article{2f4f6809-b9a5-4058-8fd6-39b77a7b41dd,
  abstract     = {Due to the strongly kinetic nature of the chemical events leading to the formation of mesoscopically ordered inorganic-surfactant composite materials, detailed studies on the interdependency between the degree of inorganic condensation and the co-operative self-assembly is difficult to perform. We have therefore undertaken a study where organic polyelectrolytes are used as models for the inorganic oligomeric/polymeric species and studied the phase behavior of negatively charged polyacrylate positively charged surfactant complexes in aqueous solution as a function of polyelectrolyte molar mass. Dodecyltrimethyl ammonium chloride was used as the surfactant. The toluene solubilization capacity of the complexes were also determined, and a clear dependency on the (poly)electrolyte molar mass was found. The results can be used to explain many of the observed features observed for evolving silicate-surfactant under kinetic control. It is suggested that electrostatic screening effects dominate at low degrees of silicate condensation, while the stabilizing effect of the polyelectrolyte becomes increasingly dominant upon further silicate condensation. (c) 2006 Elsevier B.V. All rights reserved.},
  author       = {Friman, Rauno and Backlund, Sune and Hassan, Osman and Alfredsson, Viveka and Linden, Mika},
  issn         = {0927-7757},
  language     = {eng},
  number       = {1-3},
  pages        = {148--154},
  publisher    = {Elsevier},
  series       = {Colloids and Surfaces A: Physicochemical and Engineering Aspects},
  title        = {Oppositely charged surfactant-polyelectrolyte systems as model systems for mesoscopically ordered surfactant-silicates},
  url          = {http://dx.doi.org/10.1016/j.colsurfa.2006.07.031},
  doi          = {10.1016/j.colsurfa.2006.07.031},
  volume       = {291},
  year         = {2006},
}