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

Luigi Gentile; Bruno F.B. Silva; Sandor Balog; Kell Mortensen; Ulf Olsson

doi:10.1016/j.jcis.2012.01.027

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

Luigi Gentile, Bruno F.B. Silva, Sandor Balog, Kell Mortensen, Ulf Olsson

22 Citations (Scopus)

Abstract

In this study, we investigate structural transitions of tetraethylene glycol monohexadecyl ether (C ₁₆E ₄) in D ₂O 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 C ₁₆E ₄ is also found to deviate from other nonionic surfactants with shorter alkyl chains (C ₁₀E ₃ and C ₁₂E ₄), resembling to the C ₁₆E ₇ case, of longer chain.

Original language	English
Journal	Journal of Colloid and Interface Science
Volume	372
Issue number	1
Pages (from-to)	32-39
Number of pages	8
ISSN	0021-9797
DOIs	https://doi.org/10.1016/j.jcis.2012.01.027
Publication status	Published - 15 Apr 2012

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

abstract = "In this study, we investigate structural transitions of tetraethylene glycol monohexadecyl ether (C 16E 4) in D 2O 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 C 16E 4 is also found to deviate from other nonionic surfactants with shorter alkyl chains (C 10E 3 and C 12E 4), resembling to the C 16E 7 case, of longer chain.",

author = "Luigi Gentile and Silva, {Bruno F.B.} and Sandor Balog and Kell Mortensen and Ulf Olsson",

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T1 - Structural transitions induced by shear flow and temperature variation in a nonionic surfactant/water system

AU - Gentile, Luigi

AU - Silva, Bruno F.B.

AU - Balog, Sandor

AU - Mortensen, Kell

AU - Olsson, Ulf

PY - 2012/4/15

Y1 - 2012/4/15

N2 - In this study, we investigate structural transitions of tetraethylene glycol monohexadecyl ether (C 16E 4) in D 2O 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 C 16E 4 is also found to deviate from other nonionic surfactants with shorter alkyl chains (C 10E 3 and C 12E 4), resembling to the C 16E 7 case, of longer chain.

AB - In this study, we investigate structural transitions of tetraethylene glycol monohexadecyl ether (C 16E 4) in D 2O 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 C 16E 4 is also found to deviate from other nonionic surfactants with shorter alkyl chains (C 10E 3 and C 12E 4), resembling to the C 16E 7 case, of longer chain.

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DO - 10.1016/j.jcis.2012.01.027

M3 - Journal article

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EP - 39

JO - Journal of Colloid and Interface Science

JF - Journal of Colloid and Interface Science

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

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