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Fusion and fission of catanionic bilayers

Silva, Bruno F. B.; Marques, Eduardo LU and Olsson, Ulf LU (2011) In Soft Matter 7(5). p.1686-1689
Abstract
We herein report the reversible formation of a planar lamellar phase as an intermediate structure in a vesicle-micelle transition induced by temperature, for a salt-free catanionic surfactant-water system. Turbidity, small-angle neutron scattering, dynamic light scattering and microscopy data altogether demonstrate that the vesicles formed by hexadecyltrimethylammonium octylsulfonate (TA(16)So(8)) in water fuse at high temperature into planar lamellae before transforming into elongated micelles. On cooling the micelles first nucleate into lamellae, and only then vesicles appear through lamellae fission. This behavior is both intriguing and counter-intuitive, since a monotonous dependence of the spontaneous curvature of the surfactant film... (More)
We herein report the reversible formation of a planar lamellar phase as an intermediate structure in a vesicle-micelle transition induced by temperature, for a salt-free catanionic surfactant-water system. Turbidity, small-angle neutron scattering, dynamic light scattering and microscopy data altogether demonstrate that the vesicles formed by hexadecyltrimethylammonium octylsulfonate (TA(16)So(8)) in water fuse at high temperature into planar lamellae before transforming into elongated micelles. On cooling the micelles first nucleate into lamellae, and only then vesicles appear through lamellae fission. This behavior is both intriguing and counter-intuitive, since a monotonous dependence of the spontaneous curvature of the surfactant film on temperature should be expected. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Soft Matter
volume
7
issue
5
pages
1686 - 1689
publisher
Royal Society of Chemistry
external identifiers
  • wos:000287588800021
  • scopus:79951913698
ISSN
1744-6848
DOI
10.1039/c0sm01269f
language
English
LU publication?
yes
id
b9a3b156-6ea2-487d-a762-ac9c1e92cd48 (old id 1869967)
date added to LUP
2011-04-06 10:41:06
date last changed
2017-01-01 05:53:06
@article{b9a3b156-6ea2-487d-a762-ac9c1e92cd48,
  abstract     = {We herein report the reversible formation of a planar lamellar phase as an intermediate structure in a vesicle-micelle transition induced by temperature, for a salt-free catanionic surfactant-water system. Turbidity, small-angle neutron scattering, dynamic light scattering and microscopy data altogether demonstrate that the vesicles formed by hexadecyltrimethylammonium octylsulfonate (TA(16)So(8)) in water fuse at high temperature into planar lamellae before transforming into elongated micelles. On cooling the micelles first nucleate into lamellae, and only then vesicles appear through lamellae fission. This behavior is both intriguing and counter-intuitive, since a monotonous dependence of the spontaneous curvature of the surfactant film on temperature should be expected.},
  author       = {Silva, Bruno F. B. and Marques, Eduardo and Olsson, Ulf},
  issn         = {1744-6848},
  language     = {eng},
  number       = {5},
  pages        = {1686--1689},
  publisher    = {Royal Society of Chemistry},
  series       = {Soft Matter},
  title        = {Fusion and fission of catanionic bilayers},
  url          = {http://dx.doi.org/10.1039/c0sm01269f},
  volume       = {7},
  year         = {2011},
}