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Study of the micelle-to-vesicle transition and smallest possible vesicle size by temperature-jumps.

Zackrisson Oskolkova, Malin LU ; Norrman, Erik and Olsson, Ulf LU (2013) In Journal of Colloid and Interface Science 396(Online 1 February 2013). p.173-177
Abstract
We have investigated the temperature induced micelle-to-vesicle transition in a binary non-ionic

surfactant/water system, for which the spontaneous curvature decreases with increasing temperature.

Temperature jumps with variable rate were performed in a microwave oven, from a micellar phase at

5 ◦C to a lamellar phase region at 35 ◦C, passing a liquid-liquid two phase region where dilute and

concentrated micellar solutions coexist. It is shown that the obtained vesicle size decreases with

increasing heating rate through this two phase region. Moreover, we demonstrate that there exists a

minimum vesicle radius, Rv∗, as is also predicted by theory. In the present system we find Rv∗ ≈ 50... (More)
We have investigated the temperature induced micelle-to-vesicle transition in a binary non-ionic

surfactant/water system, for which the spontaneous curvature decreases with increasing temperature.

Temperature jumps with variable rate were performed in a microwave oven, from a micellar phase at

5 ◦C to a lamellar phase region at 35 ◦C, passing a liquid-liquid two phase region where dilute and

concentrated micellar solutions coexist. It is shown that the obtained vesicle size decreases with

increasing heating rate through this two phase region. Moreover, we demonstrate that there exists a

minimum vesicle radius, Rv∗, as is also predicted by theory. In the present system we find Rv∗ ≈ 50 nm,

in reasonable agreement with a theoretical estimate. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
micelle-to-vesicle transition, nonionic surfactants, vesicles, micelles, T-jumps
in
Journal of Colloid and Interface Science
volume
396
issue
Online 1 February 2013
pages
173 - 177
publisher
Elsevier
external identifiers
  • wos:000316372400024
  • pmid:23433973
  • scopus:84875428258
ISSN
1095-7103
DOI
10.1016/j.jcis.2012.12.070
language
English
LU publication?
yes
id
0d5427a0-8e77-499a-822a-2cbaa1f70c6c (old id 3363813)
date added to LUP
2013-01-23 12:44:00
date last changed
2019-07-02 01:08:43
@article{0d5427a0-8e77-499a-822a-2cbaa1f70c6c,
  abstract     = {We have investigated the temperature induced micelle-to-vesicle transition in a binary non-ionic<br/><br>
surfactant/water system, for which the spontaneous curvature decreases with increasing temperature.<br/><br>
Temperature jumps with variable rate were performed in a microwave oven, from a micellar phase at<br/><br>
5 ◦C to a lamellar phase region at 35 ◦C, passing a liquid-liquid two phase region where dilute and<br/><br>
concentrated micellar solutions coexist. It is shown that the obtained vesicle size decreases with<br/><br>
increasing heating rate through this two phase region. Moreover, we demonstrate that there exists a<br/><br>
minimum vesicle radius, Rv∗, as is also predicted by theory. In the present system we find Rv∗ ≈ 50 nm,<br/><br>
in reasonable agreement with a theoretical estimate.},
  author       = {Zackrisson Oskolkova, Malin and Norrman, Erik and Olsson, Ulf},
  issn         = {1095-7103},
  keyword      = {micelle-to-vesicle transition,nonionic surfactants,vesicles,micelles,T-jumps},
  language     = {eng},
  number       = {Online 1 February 2013},
  pages        = {173--177},
  publisher    = {Elsevier},
  series       = {Journal of Colloid and Interface Science},
  title        = {Study of the micelle-to-vesicle transition and smallest possible vesicle size by temperature-jumps.},
  url          = {http://dx.doi.org/10.1016/j.jcis.2012.12.070},
  volume       = {396},
  year         = {2013},
}