Advanced

Polyelectrolyte-surfactant complexes with long range order.

Pacios, Isabel E; Lindman, Björn LU and Thuresson, Krister LU (2008) In Journal of Colloid and Interface Science 319(1). p.330-337
Abstract
Mixtures of carboxymethyl cellulose (CMC) or hydrophobically modified CMC with an oppositely charged surfactant (benzyldimethyltetradecylammonium chloride) in water were prepared. When the global polymer concentration is 0.18% by weight and the surfactant content is high enough, a precipitate with hexagonal order is formed. The precipitate composition shows practically constancy in its water content and a slight diminution in polymer concentration when the global surfactant content is varied between 0.9 and 23 wt%. The lattice parameter in this phase decreases when the polymer/surfactant ratio in the phase increases; this variation is faster with CMC than with the hydrophobically modified CMC. In this way electrostatic and hydrophobic... (More)
Mixtures of carboxymethyl cellulose (CMC) or hydrophobically modified CMC with an oppositely charged surfactant (benzyldimethyltetradecylammonium chloride) in water were prepared. When the global polymer concentration is 0.18% by weight and the surfactant content is high enough, a precipitate with hexagonal order is formed. The precipitate composition shows practically constancy in its water content and a slight diminution in polymer concentration when the global surfactant content is varied between 0.9 and 23 wt%. The lattice parameter in this phase decreases when the polymer/surfactant ratio in the phase increases; this variation is faster with CMC than with the hydrophobically modified CMC. In this way electrostatic and hydrophobic interactions are far from being additive. From the extrapolation to infinite dilution, the global interaction seems to depend on the substitution degree in the polymer. Additionally, the comparison between the radius at the polar-apolar interface in the cylinders and the lattice parameter as a function of polymer/surfactant ratio in the hexagonal phase is compatible with some of the alkyl chains belonging to the hydrophobically modified CMC being present in the aqueous zone. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Colloid and Interface Science
volume
319
issue
1
pages
330 - 337
publisher
Elsevier
external identifiers
  • pmid:18067914
  • wos:000252750400043
  • scopus:37849049283
ISSN
1095-7103
DOI
10.1016/j.jcis.2007.11.029
language
English
LU publication?
yes
id
5ebb423f-0471-4bfb-8711-0832572642bc (old id 1035453)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/18067914?dopt=Abstract
date added to LUP
2009-07-10 14:25:16
date last changed
2017-10-01 03:35:51
@article{5ebb423f-0471-4bfb-8711-0832572642bc,
  abstract     = {Mixtures of carboxymethyl cellulose (CMC) or hydrophobically modified CMC with an oppositely charged surfactant (benzyldimethyltetradecylammonium chloride) in water were prepared. When the global polymer concentration is 0.18% by weight and the surfactant content is high enough, a precipitate with hexagonal order is formed. The precipitate composition shows practically constancy in its water content and a slight diminution in polymer concentration when the global surfactant content is varied between 0.9 and 23 wt%. The lattice parameter in this phase decreases when the polymer/surfactant ratio in the phase increases; this variation is faster with CMC than with the hydrophobically modified CMC. In this way electrostatic and hydrophobic interactions are far from being additive. From the extrapolation to infinite dilution, the global interaction seems to depend on the substitution degree in the polymer. Additionally, the comparison between the radius at the polar-apolar interface in the cylinders and the lattice parameter as a function of polymer/surfactant ratio in the hexagonal phase is compatible with some of the alkyl chains belonging to the hydrophobically modified CMC being present in the aqueous zone.},
  author       = {Pacios, Isabel E and Lindman, Björn and Thuresson, Krister},
  issn         = {1095-7103},
  language     = {eng},
  number       = {1},
  pages        = {330--337},
  publisher    = {Elsevier},
  series       = {Journal of Colloid and Interface Science},
  title        = {Polyelectrolyte-surfactant complexes with long range order.},
  url          = {http://dx.doi.org/10.1016/j.jcis.2007.11.029},
  volume       = {319},
  year         = {2008},
}