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Shear-induced sponge-to-lamellar phase transition studied by rheo-birefringence

Nettesheim, F; Müller, C B; Olsson, Ulf LU and Richtering, W (2004) In Colloid and Polymer Science 282(8). p.918-926
Abstract
We report on the shear induced transition from the L-3- to the L-alpha-phase studied by means of flow birefringence using the system pentaethyleneglycol monododecylether (C12E5), decane, water. The dependence of the critical shear rate, at which the transition from the isotropic state to the anisotropic takes place, on membrane volume fraction was studied in temperature ramp experiments at different constant shear rates and in isothermal shear ramp experiments. These results are compared with relaxation experiments from the shear aligned state back to the isotropic. For all these experiments power law exponents in the membrane volume fraction between 1.6 and 2.8 were found, which are rather low compared to values of current theories. The... (More)
We report on the shear induced transition from the L-3- to the L-alpha-phase studied by means of flow birefringence using the system pentaethyleneglycol monododecylether (C12E5), decane, water. The dependence of the critical shear rate, at which the transition from the isotropic state to the anisotropic takes place, on membrane volume fraction was studied in temperature ramp experiments at different constant shear rates and in isothermal shear ramp experiments. These results are compared with relaxation experiments from the shear aligned state back to the isotropic. For all these experiments power law exponents in the membrane volume fraction between 1.6 and 2.8 were found, which are rather low compared to values of current theories. The values found for the inverse critical shear rate and the decay times from the relaxation experiments differ by four orders of magnitude. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Colloid and Polymer Science
volume
282
issue
8
pages
918 - 926
publisher
Springer
external identifiers
  • wos:000221731900017
  • scopus:3042812283
ISSN
0303-402X
DOI
10.1007/s00396-004-1127-y
language
English
LU publication?
yes
id
822c1d7e-cefe-4800-b6e0-51a2e3ab2ef9 (old id 154128)
date added to LUP
2007-07-12 08:49:58
date last changed
2017-01-01 05:06:24
@article{822c1d7e-cefe-4800-b6e0-51a2e3ab2ef9,
  abstract     = {We report on the shear induced transition from the L-3- to the L-alpha-phase studied by means of flow birefringence using the system pentaethyleneglycol monododecylether (C12E5), decane, water. The dependence of the critical shear rate, at which the transition from the isotropic state to the anisotropic takes place, on membrane volume fraction was studied in temperature ramp experiments at different constant shear rates and in isothermal shear ramp experiments. These results are compared with relaxation experiments from the shear aligned state back to the isotropic. For all these experiments power law exponents in the membrane volume fraction between 1.6 and 2.8 were found, which are rather low compared to values of current theories. The values found for the inverse critical shear rate and the decay times from the relaxation experiments differ by four orders of magnitude.},
  author       = {Nettesheim, F and Müller, C B and Olsson, Ulf and Richtering, W},
  issn         = {0303-402X},
  language     = {eng},
  number       = {8},
  pages        = {918--926},
  publisher    = {Springer},
  series       = {Colloid and Polymer Science},
  title        = {Shear-induced sponge-to-lamellar phase transition studied by rheo-birefringence},
  url          = {http://dx.doi.org/10.1007/s00396-004-1127-y},
  volume       = {282},
  year         = {2004},
}