Robust ordered cubic mesostructured polymer/silica composite films grown at the air/water interface
(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.
(Less)
- author
- Yang, B. ; Holdaway, James A. LU and Edler, Karen J. LU
- publishing date
- 2013-03-26
- 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}}, }