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Water-Responsive Internally Structured Polymer Surfactant Films on Solid Surfaces

Gustavsson, Charlotte LU ; Li, Joaquim LU ; Edler, Karen J. and Piculell, Lennart LU (2014) In Langmuir 30(42). p.12525-12531
Abstract
Water-insoluble films of oppositely charged polyionsurfactant ion complex salts (CS) are readily cast on solid surfaces from ethanolic solutions. The methodology introduces new possibilities to study and utilize more or less hydrated CS. Direct SAXS measurements show that the surface films are water-responsive and change their liquid crystalline structure in response to changes in the water activity of the environment. In addition to the classical micellar cubic and hexagonal phases, a rectangular ribbon phase and a hexagonal close-packed structure have now been detected for CS composed of cationic alkyltrimethylammonium surfactants with polyacrylate counterions. Added cosurfactants, decanol or the nonionic surfactant C12E5, yield... (More)
Water-insoluble films of oppositely charged polyionsurfactant ion complex salts (CS) are readily cast on solid surfaces from ethanolic solutions. The methodology introduces new possibilities to study and utilize more or less hydrated CS. Direct SAXS measurements show that the surface films are water-responsive and change their liquid crystalline structure in response to changes in the water activity of the environment. In addition to the classical micellar cubic and hexagonal phases, a rectangular ribbon phase and a hexagonal close-packed structure have now been detected for CS composed of cationic alkyltrimethylammonium surfactants with polyacrylate counterions. Added cosurfactants, decanol or the nonionic surfactant C12E5, yield additional lamellar and bicontinuous cubic structures. Images of the surfaces by optical and atomic force microscopy show that the films cover the surfaces well but have a more or less irregular surface topology, including craters of sizes ranging from a few to hundreds of micrometers. The results indicate possibilities to create a wealth of water-responsive structured CS films on solid surfaces. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Langmuir
volume
30
issue
42
pages
12525 - 12531
publisher
The American Chemical Society
external identifiers
  • wos:000347744100009
  • scopus:84908285322
ISSN
0743-7463
DOI
10.1021/la503210g
language
English
LU publication?
yes
id
8216acbd-908d-4ba9-bea4-98b3fb21cd7b (old id 5073027)
date added to LUP
2015-02-25 16:42:32
date last changed
2017-10-01 03:05:41
@article{8216acbd-908d-4ba9-bea4-98b3fb21cd7b,
  abstract     = {Water-insoluble films of oppositely charged polyionsurfactant ion complex salts (CS) are readily cast on solid surfaces from ethanolic solutions. The methodology introduces new possibilities to study and utilize more or less hydrated CS. Direct SAXS measurements show that the surface films are water-responsive and change their liquid crystalline structure in response to changes in the water activity of the environment. In addition to the classical micellar cubic and hexagonal phases, a rectangular ribbon phase and a hexagonal close-packed structure have now been detected for CS composed of cationic alkyltrimethylammonium surfactants with polyacrylate counterions. Added cosurfactants, decanol or the nonionic surfactant C12E5, yield additional lamellar and bicontinuous cubic structures. Images of the surfaces by optical and atomic force microscopy show that the films cover the surfaces well but have a more or less irregular surface topology, including craters of sizes ranging from a few to hundreds of micrometers. The results indicate possibilities to create a wealth of water-responsive structured CS films on solid surfaces.},
  author       = {Gustavsson, Charlotte and Li, Joaquim and Edler, Karen J. and Piculell, Lennart},
  issn         = {0743-7463},
  language     = {eng},
  number       = {42},
  pages        = {12525--12531},
  publisher    = {The American Chemical Society},
  series       = {Langmuir},
  title        = {Water-Responsive Internally Structured Polymer Surfactant Films on Solid Surfaces},
  url          = {http://dx.doi.org/10.1021/la503210g},
  volume       = {30},
  year         = {2014},
}