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Structural transitions induced by shear flow and temperature variation in a nonionic surfactant/water system

Gentile, Luigi; Silva, Bruno LU ; Balog, Sandor; Mortensen, Kell and Olsson, Ulf LU (2012) In Journal of Colloid and Interface Science 372. p.32-39
Abstract
In this study, we investigate structural transitions of tetraethylene glycol monohexadecyl ether (C16E4) in D2O as a function of shear flow and temperature. Via a combination of rheology, rheo-small-angle neutron scattering and rheo-small-angle light scattering, we probe the structural evolution of the system with respect to shear and temperature. Multi-lamellar vesicles, planar lamellae, and a sponge phase were found to compete as a function of shear rate and temperature, with the sponge phase involving the formation of a new transient lamellar phase with a larger spacing, coexisting with the preceding lamellar phase within a narrow temperature-time range. The shear flow behavior of C16E4 is also found to deviate from other nonionic... (More)
In this study, we investigate structural transitions of tetraethylene glycol monohexadecyl ether (C16E4) in D2O as a function of shear flow and temperature. Via a combination of rheology, rheo-small-angle neutron scattering and rheo-small-angle light scattering, we probe the structural evolution of the system with respect to shear and temperature. Multi-lamellar vesicles, planar lamellae, and a sponge phase were found to compete as a function of shear rate and temperature, with the sponge phase involving the formation of a new transient lamellar phase with a larger spacing, coexisting with the preceding lamellar phase within a narrow temperature-time range. The shear flow behavior of C16E4 is also found to deviate from other nonionic surfactants with shorter alkyl chains (C10E3 and C12E4), resembling to the C16E7 case, of longer chain. (C) 2012 Elsevier Inc. All rights reserved. (Less)
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author
organization
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type
Contribution to journal
publication status
published
subject
keywords
Dynamic phase diagram, Shear-induced, Lamellar, MLV, Vesicles, Sponge, Rheology, Rheo-SANS, Rheo-SALS, Nonionic, C16E4, Bending rigidity
in
Journal of Colloid and Interface Science
volume
372
pages
32 - 39
publisher
Elsevier
external identifiers
  • wos:000301320300005
  • scopus:84857445063
ISSN
1095-7103
DOI
10.1016/j.jcis.2012.01.027
language
English
LU publication?
yes
id
d46c19af-a83a-4fbd-ae2c-e7d40a24c2dc (old id 2587475)
date added to LUP
2012-05-30 16:17:14
date last changed
2017-08-20 03:03:00
@article{d46c19af-a83a-4fbd-ae2c-e7d40a24c2dc,
  abstract     = {In this study, we investigate structural transitions of tetraethylene glycol monohexadecyl ether (C16E4) in D2O as a function of shear flow and temperature. Via a combination of rheology, rheo-small-angle neutron scattering and rheo-small-angle light scattering, we probe the structural evolution of the system with respect to shear and temperature. Multi-lamellar vesicles, planar lamellae, and a sponge phase were found to compete as a function of shear rate and temperature, with the sponge phase involving the formation of a new transient lamellar phase with a larger spacing, coexisting with the preceding lamellar phase within a narrow temperature-time range. The shear flow behavior of C16E4 is also found to deviate from other nonionic surfactants with shorter alkyl chains (C10E3 and C12E4), resembling to the C16E7 case, of longer chain. (C) 2012 Elsevier Inc. All rights reserved.},
  author       = {Gentile, Luigi and Silva, Bruno and Balog, Sandor and Mortensen, Kell and Olsson, Ulf},
  issn         = {1095-7103},
  keyword      = {Dynamic phase diagram,Shear-induced,Lamellar,MLV,Vesicles,Sponge,Rheology,Rheo-SANS,Rheo-SALS,Nonionic,C16E4,Bending rigidity},
  language     = {eng},
  pages        = {32--39},
  publisher    = {Elsevier},
  series       = {Journal of Colloid and Interface Science},
  title        = {Structural transitions induced by shear flow and temperature variation in a nonionic surfactant/water system},
  url          = {http://dx.doi.org/10.1016/j.jcis.2012.01.027},
  volume       = {372},
  year         = {2012},
}