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

Xray and Neutron Science

11 Citations (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.

Original language	English
Journal	Journal of Physical Chemistry B
Volume	118
Issue number	13
Pages (from-to)	3622-3629
ISSN	1520-6106
DOIs	https://doi.org/10.1021/jp5009797
Publication status	Published - 3 Apr 2014

Access to Document

10.1021/jp5009797

Cite this

@article{8b4b343b6bfb4aefb9e2731d6c4b2b49,

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",

year = "2014",

month = apr,

day = "3",

doi = "10.1021/jp5009797",

language = "English",

volume = "118",

pages = "3622--3629",

journal = "Journal of Physical Chemistry Part B: Condensed Matter, Materials, Surfaces, Interfaces & Biophysical",

issn = "1520-6106",

publisher = "American Chemical Society",

number = "13",

}

TY - JOUR

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

Abstract

Access to Document

Fingerprint

Cite this