Phase Coexistence in a Dynamic Phase Diagram.
(2015) In ChemPhysChem 16(11). p.2459-2465- Abstract
- Metastability and phase coexistence are important concepts in colloidal science. Typically, the phase diagram of colloidal systems is considered at the equilibrium without the presence of an external field. However, several studies have reported phase transition under mechanical deformation. The reason behind phase coexistence under shear flow is not fully understood. Here, multilamellar vesicle (MLV)-to-sponge (L3 ) and MLV-to-Lα transitions upon increasing temperature are detected using flow small-angle neutron scattering techniques. Coexistence of Lα and MLV phases at 40 °C under shear flow is detected by using flow NMR spectroscopy. The unusual rheological behavior observed by studying the lamellar phase of a non-ionic surfactant is... (More)
- Metastability and phase coexistence are important concepts in colloidal science. Typically, the phase diagram of colloidal systems is considered at the equilibrium without the presence of an external field. However, several studies have reported phase transition under mechanical deformation. The reason behind phase coexistence under shear flow is not fully understood. Here, multilamellar vesicle (MLV)-to-sponge (L3 ) and MLV-to-Lα transitions upon increasing temperature are detected using flow small-angle neutron scattering techniques. Coexistence of Lα and MLV phases at 40 °C under shear flow is detected by using flow NMR spectroscopy. The unusual rheological behavior observed by studying the lamellar phase of a non-ionic surfactant is explained using (2) H NMR and diffusion flow NMR spectroscopy with the coexistence of planar lamellar-multilamellar vesicles. Moreover, a dynamic phase diagram over a wide range of temperatures is proposed. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/7485171
- author
- Gentile, Luigi LU ; Coppola, Luigi ; Balog, Sandor ; Mortensen, Kell ; Ranieri, Giuseppe A and Olsson, Ulf LU
- organization
- publishing date
- 2015
- type
- Contribution to journal
- publication status
- published
- subject
- in
- ChemPhysChem
- volume
- 16
- issue
- 11
- pages
- 2459 - 2465
- publisher
- John Wiley & Sons Inc.
- external identifiers
-
- pmid:26083451
- wos:000358538300024
- scopus:84937969391
- pmid:26083451
- ISSN
- 1439-7641
- DOI
- 10.1002/cphc.201500237
- language
- English
- LU publication?
- yes
- id
- f9af1f27-73aa-47b8-8921-f7bcdf6ccc34 (old id 7485171)
- date added to LUP
- 2016-04-01 10:50:25
- date last changed
- 2022-02-02 21:28:56
@article{f9af1f27-73aa-47b8-8921-f7bcdf6ccc34,
abstract = {{Metastability and phase coexistence are important concepts in colloidal science. Typically, the phase diagram of colloidal systems is considered at the equilibrium without the presence of an external field. However, several studies have reported phase transition under mechanical deformation. The reason behind phase coexistence under shear flow is not fully understood. Here, multilamellar vesicle (MLV)-to-sponge (L3 ) and MLV-to-Lα transitions upon increasing temperature are detected using flow small-angle neutron scattering techniques. Coexistence of Lα and MLV phases at 40 °C under shear flow is detected by using flow NMR spectroscopy. The unusual rheological behavior observed by studying the lamellar phase of a non-ionic surfactant is explained using (2) H NMR and diffusion flow NMR spectroscopy with the coexistence of planar lamellar-multilamellar vesicles. Moreover, a dynamic phase diagram over a wide range of temperatures is proposed.}},
author = {{Gentile, Luigi and Coppola, Luigi and Balog, Sandor and Mortensen, Kell and Ranieri, Giuseppe A and Olsson, Ulf}},
issn = {{1439-7641}},
language = {{eng}},
number = {{11}},
pages = {{2459--2465}},
publisher = {{John Wiley & Sons Inc.}},
series = {{ChemPhysChem}},
title = {{Phase Coexistence in a Dynamic Phase Diagram.}},
url = {{http://dx.doi.org/10.1002/cphc.201500237}},
doi = {{10.1002/cphc.201500237}},
volume = {{16}},
year = {{2015}},
}