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Self-assembled films formed at the air - Water interface from CTAB/SDS mixtures with water-soluble polymers

Edler, Karen J. LU orcid ; Wasbrough, Matthew J. ; Holdaway, James A. LU and O'Driscoll, Benjamin M.D. (2009) In Langmuir 25(7). p.4047-4055
Abstract

We have investigated the spontaneous self-assembly of solid, mesostructured films that form at the air-solution interface on solutions containing a neutral water-soluble polymer and catanionic surfactant mixtures of hexadecyl-trimethylammonium bromide (CTAB) and sodium dodecylsulphate (SDS). The formation processes and structures were probed using neutron reflectivity, X-ray reflectivity, off-specular time-resolved scattering, and grazing incidence diffraction. The mesostructures of films prepared with polyethylene oxide, polyethylenimine, and polyacrylamide at various cationic/anionic surfactant molar ratios are compared. The results suggest that polymers having a weak interaction with the surfactants cause a depletion aggregation... (More)

We have investigated the spontaneous self-assembly of solid, mesostructured films that form at the air-solution interface on solutions containing a neutral water-soluble polymer and catanionic surfactant mixtures of hexadecyl-trimethylammonium bromide (CTAB) and sodium dodecylsulphate (SDS). The formation processes and structures were probed using neutron reflectivity, X-ray reflectivity, off-specular time-resolved scattering, and grazing incidence diffraction. The mesostructures of films prepared with polyethylene oxide, polyethylenimine, and polyacrylamide at various cationic/anionic surfactant molar ratios are compared. The results suggest that polymers having a weak interaction with the surfactants cause a depletion aggregation process that results in a lamellar phase, whereas polymers having a stronger interaction with the surfactants produce more complex mesostructures in the films.

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author
; ; and
publishing date
type
Contribution to journal
publication status
published
in
Langmuir
volume
25
issue
7
pages
9 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • scopus:65249180089
ISSN
0743-7463
DOI
10.1021/la802854d
language
English
LU publication?
no
id
574f995c-f4a2-4636-b85b-a1b301ad3e50
date added to LUP
2023-05-04 18:48:40
date last changed
2023-06-09 15:57:46
@article{574f995c-f4a2-4636-b85b-a1b301ad3e50,
  abstract     = {{<p>We have investigated the spontaneous self-assembly of solid, mesostructured films that form at the air-solution interface on solutions containing a neutral water-soluble polymer and catanionic surfactant mixtures of hexadecyl-trimethylammonium bromide (CTAB) and sodium dodecylsulphate (SDS). The formation processes and structures were probed using neutron reflectivity, X-ray reflectivity, off-specular time-resolved scattering, and grazing incidence diffraction. The mesostructures of films prepared with polyethylene oxide, polyethylenimine, and polyacrylamide at various cationic/anionic surfactant molar ratios are compared. The results suggest that polymers having a weak interaction with the surfactants cause a depletion aggregation process that results in a lamellar phase, whereas polymers having a stronger interaction with the surfactants produce more complex mesostructures in the films.</p>}},
  author       = {{Edler, Karen J. and Wasbrough, Matthew J. and Holdaway, James A. and O'Driscoll, Benjamin M.D.}},
  issn         = {{0743-7463}},
  language     = {{eng}},
  month        = {{04}},
  number       = {{7}},
  pages        = {{4047--4055}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{Langmuir}},
  title        = {{Self-assembled films formed at the air - Water interface from CTAB/SDS mixtures with water-soluble polymers}},
  url          = {{http://dx.doi.org/10.1021/la802854d}},
  doi          = {{10.1021/la802854d}},
  volume       = {{25}},
  year         = {{2009}},
}