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Robust ordered cubic mesostructured polymer/silica composite films grown at the air/water interface

Yang, B. ; Holdaway, James A. LU and Edler, Karen J. LU orcid (2013) In Langmuir 29(12). p.4148-4158
Abstract

Polymer/silica composite films, stable to calcination, were produced using catanionic surfactant mixtures (hexadecyltrimethylammonium bromide (CTAB) and sodium dodecyl sulfate (SDS)) and polymers (polyethylenimine (PEI) or polyacrylamide (PAAm)) at the air/water interface. Film formation processes were probed by time-resolved neutron reflectivity measurements. Grazing incidence X-ray diffraction (GID) measurements indicate that the mesophase geometry of the interfacial films could be controlled to give lamellar, 2D hexagonal, and several cubic phases (Pn3̄m, Fm3̄m, and Im3̄m) by varying the polyelectrolyte molecular weight, polyelectrolyte chemical nature, or the cationic:anionic surfactant molar ratio. On the basis of GID results, a... (More)

Polymer/silica composite films, stable to calcination, were produced using catanionic surfactant mixtures (hexadecyltrimethylammonium bromide (CTAB) and sodium dodecyl sulfate (SDS)) and polymers (polyethylenimine (PEI) or polyacrylamide (PAAm)) at the air/water interface. Film formation processes were probed by time-resolved neutron reflectivity measurements. Grazing incidence X-ray diffraction (GID) measurements indicate that the mesophase geometry of the interfacial films could be controlled to give lamellar, 2D hexagonal, and several cubic phases (Pn3̄m, Fm3̄m, and Im3̄m) by varying the polyelectrolyte molecular weight, polyelectrolyte chemical nature, or the cationic:anionic surfactant molar ratio. On the basis of GID results, a phase diagram for the catanionic surfactant/polyelectrolyte/TMOS film system was drawn. These films can be easily removed from the interface and mesoporous silica films which retain the film geometry can be obtained after calcination; moreover, this film preparation method provides a simple way to impart polymer functionality into the mesostructured silica wall, which means these films have potential applications in a variety of fields such as catalysis, molecular separation, and drug delivery.

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author
; and
publishing date
type
Contribution to journal
publication status
published
in
Langmuir
volume
29
issue
12
pages
11 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • scopus:84875580942
ISSN
0743-7463
DOI
10.1021/la4001329
language
English
LU publication?
no
id
bad8f18f-b1cb-4bc0-9bb4-81c17e5aa995
date added to LUP
2023-05-04 18:09:57
date last changed
2023-06-08 12:11:29
@article{bad8f18f-b1cb-4bc0-9bb4-81c17e5aa995,
  abstract     = {{<p>Polymer/silica composite films, stable to calcination, were produced using catanionic surfactant mixtures (hexadecyltrimethylammonium bromide (CTAB) and sodium dodecyl sulfate (SDS)) and polymers (polyethylenimine (PEI) or polyacrylamide (PAAm)) at the air/water interface. Film formation processes were probed by time-resolved neutron reflectivity measurements. Grazing incidence X-ray diffraction (GID) measurements indicate that the mesophase geometry of the interfacial films could be controlled to give lamellar, 2D hexagonal, and several cubic phases (Pn3̄m, Fm3̄m, and Im3̄m) by varying the polyelectrolyte molecular weight, polyelectrolyte chemical nature, or the cationic:anionic surfactant molar ratio. On the basis of GID results, a phase diagram for the catanionic surfactant/polyelectrolyte/TMOS film system was drawn. These films can be easily removed from the interface and mesoporous silica films which retain the film geometry can be obtained after calcination; moreover, this film preparation method provides a simple way to impart polymer functionality into the mesostructured silica wall, which means these films have potential applications in a variety of fields such as catalysis, molecular separation, and drug delivery.</p>}},
  author       = {{Yang, B. and Holdaway, James A. and Edler, Karen J.}},
  issn         = {{0743-7463}},
  language     = {{eng}},
  month        = {{03}},
  number       = {{12}},
  pages        = {{4148--4158}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{Langmuir}},
  title        = {{Robust ordered cubic mesostructured polymer/silica composite films grown at the air/water interface}},
  url          = {{http://dx.doi.org/10.1021/la4001329}},
  doi          = {{10.1021/la4001329}},
  volume       = {{29}},
  year         = {{2013}},
}