Dynamic Phase Diagram of a Nonionic Surfactant Lamellar Phase

L. Gentile; M.A. Behrens; S. Balog; Kell Mortensen; G.A. Ranieri; U. Olsson

doi:10.1021/jp5009797

Dynamic Phase Diagram of a Nonionic Surfactant Lamellar Phase

L. Gentile, M.A. Behrens, S. Balog, Kell Mortensen, G.A. Ranieri, U. Olsson

X-ray and Neutron Science

11 Citationer (Scopus)

Abstract

The dynamic phase diagram of triethylene glycol dodecyl ether (C ₁₂E₃) in D₂O was determined for 40, 50, and 60 wt % of surfactant. The shear flow effect on the nonionic lamellar phase was investigated as a function of temperature and concentration. The transition from planar lamellae (L_α)-to-multilamellar vesicles (MLVs) was characterized by means of rheology, rheo-small-angle neutron and light scattering. New insight into the nature of the transition region between L _α and the MLVs state is provided. A disorder-order transition was also observed by SANS. This is attributed to a transition from disordered MLVs to a close-packed array of MLV's with slightly higher order than before. Moreover flow instability was observed in the shear-thickening regime at 40 °C.

Originalsprog	Engelsk
Tidsskrift	Journal of Physical Chemistry B
Vol/bind	118
Udgave nummer	13
Sider (fra-til)	3622-3629
ISSN	1520-6106
DOI	https://doi.org/10.1021/jp5009797
Status	Udgivet - 3 apr. 2014

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10.1021/jp5009797

Citationsformater

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title = "Dynamic Phase Diagram of a Nonionic Surfactant Lamellar Phase",

abstract = "The dynamic phase diagram of triethylene glycol dodecyl ether (C 12E3) in D2O was determined for 40, 50, and 60 wt % of surfactant. The shear flow effect on the nonionic lamellar phase was investigated as a function of temperature and concentration. The transition from planar lamellae (Lα)-to-multilamellar vesicles (MLVs) was characterized by means of rheology, rheo-small-angle neutron and light scattering. New insight into the nature of the transition region between L α and the MLVs state is provided. A disorder-order transition was also observed by SANS. This is attributed to a transition from disordered MLVs to a close-packed array of MLV's with slightly higher order than before. Moreover flow instability was observed in the shear-thickening regime at 40 °C.",

author = "L. Gentile and M.A. Behrens and S. Balog and Kell Mortensen and G.A. Ranieri and U. Olsson",

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T1 - Dynamic Phase Diagram of a Nonionic Surfactant Lamellar Phase

AU - Gentile, L.

AU - Behrens, M.A.

AU - Balog, S.

AU - Mortensen, Kell

AU - Ranieri, G.A.

AU - Olsson, U.

PY - 2014/4/3

Y1 - 2014/4/3

N2 - The dynamic phase diagram of triethylene glycol dodecyl ether (C 12E3) in D2O was determined for 40, 50, and 60 wt % of surfactant. The shear flow effect on the nonionic lamellar phase was investigated as a function of temperature and concentration. The transition from planar lamellae (Lα)-to-multilamellar vesicles (MLVs) was characterized by means of rheology, rheo-small-angle neutron and light scattering. New insight into the nature of the transition region between L α and the MLVs state is provided. A disorder-order transition was also observed by SANS. This is attributed to a transition from disordered MLVs to a close-packed array of MLV's with slightly higher order than before. Moreover flow instability was observed in the shear-thickening regime at 40 °C.

AB - The dynamic phase diagram of triethylene glycol dodecyl ether (C 12E3) in D2O was determined for 40, 50, and 60 wt % of surfactant. The shear flow effect on the nonionic lamellar phase was investigated as a function of temperature and concentration. The transition from planar lamellae (Lα)-to-multilamellar vesicles (MLVs) was characterized by means of rheology, rheo-small-angle neutron and light scattering. New insight into the nature of the transition region between L α and the MLVs state is provided. A disorder-order transition was also observed by SANS. This is attributed to a transition from disordered MLVs to a close-packed array of MLV's with slightly higher order than before. Moreover flow instability was observed in the shear-thickening regime at 40 °C.

U2 - 10.1021/jp5009797

DO - 10.1021/jp5009797

M3 - Journal article

C2 - 24617510

SN - 1520-6106

VL - 118

SP - 3622

EP - 3629

JO - Journal of Physical Chemistry Part B: Condensed Matter, Materials, Surfaces, Interfaces & Biophysical

JF - Journal of Physical Chemistry Part B: Condensed Matter, Materials, Surfaces, Interfaces & Biophysical

IS - 13

ER -

Dynamic Phase Diagram of a Nonionic Surfactant Lamellar Phase

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