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Rheology of worm-like micelles composed of tri-block copolymer in the limit of slow dynamics
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10.1122/1.3190170
/content/sor/journal/jor2/53/5/10.1122/1.3190170
http://aip.metastore.ingenta.com/content/sor/journal/jor2/53/5/10.1122/1.3190170
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Zero-shear viscosity of samples containing 0.1 g/ml P123 and 2 M KCl as a function of EtOH concentration at and different equilibration times: 24 h (▲), 1 week (○), and 5 weeks (◼). All samples have been stirred continuously.

Image of FIG. 2.
FIG. 2.

Storage (○), loss (◼) moduli, and the viscosity (▲) as a function of frequency for a sample containing 0.1 g/ml P123, 2 M KCl, and 15 vol % EtOH at . Solid lines are fits to the Maxwell model, according to Eqs. (1) and (2), respectively.

Image of FIG. 3.
FIG. 3.

Cole–Cole plots of a sample containing 0.1 g/ml P123, 2 M KCl, and 15 vol % EtOH at 33 (◼), 34 (▲), and (○).

Image of FIG. 4.
FIG. 4.

Storage (○), loss (◼) moduli, and the viscosity (▲) as a function of frequency for 5-week-old samples containing 0.1 g/ml, 2 M KCl and (A) 5 vol % EtOH and (B) 8 vol % EtOH. Samples have been stirred continuously, stored, and measured at . Lines represent the Maxwell fits according to Eqs. (1) and (2), respectively.

Image of FIG. 5.
FIG. 5.

Storage (○), loss (◼) moduli, and the viscosity (▲) as a function of frequency for samples containing 0.1 g/ml, 2 M KCl, and 5 vol % EtOH at .

Image of FIG. 6.
FIG. 6.

Zero-shear viscosity as a function of time for samples containing 0.1 g/ml P123, 2 M KCl, and 8 vol % EtOH at . (A) (◼) denotes a sample that has been stirred continuously and (○) a sample that has not been stirred at all. (B) (▲) corresponds to a sample that has been stirred for 24 h and left unstirred. (C) (×) represents a sample that was not stirred any longer after 24 h of mixing and stirred again 24 h after being at rest. In the figures, full lines are guides to the eyes and correspond to the samples in question. Guides to the eyes of previous figure are redrawn as dashed lines and are used to ease comparison.

Image of FIG. 7.
FIG. 7.

Increase of the hydrodynamic radius as function of time for a sample containing 0.1 g/ml P123, 2 M KCl, and 8 vol % EtOH at . (◼) represents continuously stirred sample while (◻) corresponds to not stirred sample.

Image of FIG. 8.
FIG. 8.

Storage (○), loss (◼) moduli, and the viscosity (▲) in a Couette cell, as a function of time at a fixed frequency of 1 rad/s for a sample containing 0.1 g/ml P123, 2 M KCl, and 8 vol % EtOH at . This sample was stirred for 24 h prior to measurement.

Image of FIG. 9.
FIG. 9.

Zero shear viscosity as a function of the P123 concentration for samples containing 2M KCl, 8 vol % EtOH at and at different times: 2 (○), 24 (◼), and 168 h (▲). Solid line shows the power law fits of data.

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/content/sor/journal/jor2/53/5/10.1122/1.3190170
2009-09-01
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Rheology of worm-like micelles composed of tri-block copolymer in the limit of slow dynamics
http://aip.metastore.ingenta.com/content/sor/journal/jor2/53/5/10.1122/1.3190170
10.1122/1.3190170
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