Rheology of Lyotropic Lamellar Phases

Roux, D.; Nallet, Frédéric; Diat, Olivier

doi:10.1209/0295-5075/24/1/009

Cited by 199 publications

(276 citation statements)

References 11 publications

(3 reference statements)

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“…Size of the tile-like pattern becomes smaller as γ is increased, and the rheological property shifts to the shear-thinning behavior at γ  7s -1 . Estimation of characteristic size of the tile-like pattern reveals that the onion radius R follows a power law relation of R ~ γ -0.5 as has been reported [1,2,32]. Another feature of the shear-induced onion phase formation is found in the transient behavior.…”

Section: Shear-induced Onion Phase Formation In the Free-particle Systemsupporting

confidence: 61%

“…The linear increase of G' at low shear rates will be explained by the development of the oily streak defects. Increase in the defect density has been actually reported as a prerequisite phenomenon for the shear-induced onion phase formation [1,2,15,20,31,33].…”

Section: Shear Modulus Of the Composite Onion Phasementioning

confidence: 88%

“…Using this relation, the shear modulus of C 10 E 3 onion phase can be estimated to be G' ~ 10 2 Pa, which is also in the same range as observation. Additionally, by incorpolating the scaling law of the onion radius R ~ γ -0.5 [1,2,9,32,33], the shear modulus of the densely packed onion phase can be…”

Section: Shear Modulus Of the Composite Onion Phasementioning

confidence: 99%

“…One of the unsolved topics in such non-equilibrium structure formation is shear-induced onion (multilamellar vesicle) phase in the lyotropic lamellar phase which accompanies shear-thickening behavior [1,2]. Some researchers have characterized the rheological property of the onion phase [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

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Structural rheology of composite onion phase

Fujii

2015

J Biorheol

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We study the shear-induced composite onion phase formation behavior of the nonionic surfactant C 10 E 3 lamellar phases containing colloidal particles. Composite lamellar phase gives rise to the onion phase similar to the free-particle system. Depending on the particle size and concentration, the nonlinear rheology and shear modulus are significantly influenced, while the critical shear rate and onion formation kinetics remains unchanged from those of the free-particle system. Modification of the nonlinear rheology indicates that the colloidal particles assist the onion structure formation so that undulation instability is easily induced by anchoring of membranes on surface of particles. The shear modulus of the composite lamellar and onion phases is reasonably explained by considering the line tension of defects and the effect of polyhedral edge of the onion, respectively.

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Section: Shear-induced Onion Phase Formation In the Free-particle Systemsupporting

confidence: 61%

Section: Shear Modulus Of the Composite Onion Phasementioning

confidence: 88%

Section: Shear Modulus Of the Composite Onion Phasementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Structural rheology of composite onion phase

Fujii

2015

J Biorheol

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“…Layered systems such as amphiphilic lamellar phases and thermotropic smectic phases often show fascinating nonequilibrium phase transition under shear [1][2][3][4][5][6][7][8][9][10][11][12]. Weak shear flow usually aligns layers in c-orientation, where the layer normal is parallel to the velocity gradient (∇v) direction (see Fig.…”

Section: Introductionmentioning

confidence: 99%

Orientation transition of defective lyotropic triblock copolymer lamellar phase

Fujii

Yamämoto

2014

J Biorheol

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We study concentration dependence of the critical shear rate of a layer orientation transition in lyotropic triblock copolymer lamellar phase. Theory predicts that suppression of undulation fluctuation by shear triggers the transition. The critical shear rate at high polymer concentration is in reasonable agreement with theory. However, experimental results at low polymer concentrations show different behavior from the prediction. Violation of the theory is attributed to defective nature of the lamellar phase, in which creation of defects prevents the suppression of the undulation fluctuation.

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Phase Coexistence in a Dynamic Phase Diagram

et al. 2015

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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.

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Rheology of Lyotropic Lamellar Phases

Cited by 199 publications

References 11 publications

Structural rheology of composite onion phase

Structural rheology of composite onion phase

Orientation transition of defective lyotropic triblock copolymer lamellar phase

Phase Coexistence in a Dynamic Phase Diagram

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