Relaxation of shear-aligned wormlike micelles
(2002) In The Journal of Physical Chemistry Part B 106(10). p.2426-2428- Abstract
- We report on the first time-resolved small-angle neutron scattering (SANS) study of the structural relaxation from a shear-induced aligned state back to the isotropic state in a system of giant wormlike reverse micelles. The micelles are formed by lecithin and small amounts of water in cyclohexane. A liquid sample with the micellar volume fraction phi = 0.3 was exposed to a steady shear of (gamma) over dot = 10 s(-1) in a Couette shear cell. This was sufficient to transform the whole sample into an aligned state with the polymer-like micelles preferentially oriented parallel to the velocity direction. After cessation of shear, the sample relaxes back to the equilibrium liquid phase. By time-resolved SANS we could follow the relaxation... (More)
- We report on the first time-resolved small-angle neutron scattering (SANS) study of the structural relaxation from a shear-induced aligned state back to the isotropic state in a system of giant wormlike reverse micelles. The micelles are formed by lecithin and small amounts of water in cyclohexane. A liquid sample with the micellar volume fraction phi = 0.3 was exposed to a steady shear of (gamma) over dot = 10 s(-1) in a Couette shear cell. This was sufficient to transform the whole sample into an aligned state with the polymer-like micelles preferentially oriented parallel to the velocity direction. After cessation of shear, the sample relaxes back to the equilibrium liquid phase. By time-resolved SANS we could follow the relaxation process, which is characterized by a continuous decrease of the order parameter. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/342009
- author
- Angelico, R ; Olsson, Ulf LU ; Mortensen, K ; Ambrosone, L ; Palazzo, G and Ceglie, A
- organization
- publishing date
- 2002
- type
- Contribution to journal
- publication status
- published
- subject
- in
- The Journal of Physical Chemistry Part B
- volume
- 106
- issue
- 10
- pages
- 2426 - 2428
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- wos:000174369400002
- scopus:0037076114
- ISSN
- 1520-5207
- DOI
- 10.1021/jp013934y
- language
- English
- LU publication?
- yes
- id
- c4a729bd-78a1-4aac-b2e9-60bc881e5f36 (old id 342009)
- date added to LUP
- 2016-04-01 16:43:25
- date last changed
- 2022-01-28 21:39:32
@article{c4a729bd-78a1-4aac-b2e9-60bc881e5f36,
abstract = {{We report on the first time-resolved small-angle neutron scattering (SANS) study of the structural relaxation from a shear-induced aligned state back to the isotropic state in a system of giant wormlike reverse micelles. The micelles are formed by lecithin and small amounts of water in cyclohexane. A liquid sample with the micellar volume fraction phi = 0.3 was exposed to a steady shear of (gamma) over dot = 10 s(-1) in a Couette shear cell. This was sufficient to transform the whole sample into an aligned state with the polymer-like micelles preferentially oriented parallel to the velocity direction. After cessation of shear, the sample relaxes back to the equilibrium liquid phase. By time-resolved SANS we could follow the relaxation process, which is characterized by a continuous decrease of the order parameter.}},
author = {{Angelico, R and Olsson, Ulf and Mortensen, K and Ambrosone, L and Palazzo, G and Ceglie, A}},
issn = {{1520-5207}},
language = {{eng}},
number = {{10}},
pages = {{2426--2428}},
publisher = {{The American Chemical Society (ACS)}},
series = {{The Journal of Physical Chemistry Part B}},
title = {{Relaxation of shear-aligned wormlike micelles}},
url = {{http://dx.doi.org/10.1021/jp013934y}},
doi = {{10.1021/jp013934y}},
volume = {{106}},
year = {{2002}},
}