Abstract
It is well-known that solutions of cetyltrimethylammonium p-toluenesulfonate in water exhibit a pronounced shear-thickening phenomenon in a specific concentration range (0.1-0.8%) when they are subjected to simple-shear flows, as a consequence of flow-induced self-assembly of wormlike micelles. This work shows that a strong elongational flow field (opposed-jets flow), applied to the same solutions, does not lead to extension thickening because the extensional flow prevents or destroys micellar association. In flow through a porous medium, a substantial increase in apparent viscosity is observed beyond a critical apparent shear rate, which surpasses increases observed in simple-shear flows. This is explained as the result of a synergistic effect of shear and relatively weak elongation on the solution microstructure.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 3838-3841 |
| Number of pages | 4 |
| Journal | Langmuir |
| Volume | 20 |
| Issue number | 10 |
| DOIs | |
| State | Published - May 11 2004 |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Colloid and Surface Chemistry
Cite this
Effect of the flow field on the rheological behavior of aqueous cetyltrimethylammonium p-toluenesulfonate solutions. / Müller, A. J.; Torres, M. F.; Saez, Avelino E.
In: Langmuir, Vol. 20, No. 10, 11.05.2004, p. 3838-3841.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of the flow field on the rheological behavior of aqueous cetyltrimethylammonium p-toluenesulfonate solutions
AU - Müller, A. J.
AU - Torres, M. F.
AU - Saez, Avelino E
PY - 2004/5/11
Y1 - 2004/5/11
N2 - It is well-known that solutions of cetyltrimethylammonium p-toluenesulfonate in water exhibit a pronounced shear-thickening phenomenon in a specific concentration range (0.1-0.8%) when they are subjected to simple-shear flows, as a consequence of flow-induced self-assembly of wormlike micelles. This work shows that a strong elongational flow field (opposed-jets flow), applied to the same solutions, does not lead to extension thickening because the extensional flow prevents or destroys micellar association. In flow through a porous medium, a substantial increase in apparent viscosity is observed beyond a critical apparent shear rate, which surpasses increases observed in simple-shear flows. This is explained as the result of a synergistic effect of shear and relatively weak elongation on the solution microstructure.
AB - It is well-known that solutions of cetyltrimethylammonium p-toluenesulfonate in water exhibit a pronounced shear-thickening phenomenon in a specific concentration range (0.1-0.8%) when they are subjected to simple-shear flows, as a consequence of flow-induced self-assembly of wormlike micelles. This work shows that a strong elongational flow field (opposed-jets flow), applied to the same solutions, does not lead to extension thickening because the extensional flow prevents or destroys micellar association. In flow through a porous medium, a substantial increase in apparent viscosity is observed beyond a critical apparent shear rate, which surpasses increases observed in simple-shear flows. This is explained as the result of a synergistic effect of shear and relatively weak elongation on the solution microstructure.
UR - http://www.scopus.com/inward/record.url?scp=17144471515&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=17144471515&partnerID=8YFLogxK
U2 - 10.1021/la0499517
DO - 10.1021/la0499517
M3 - Article
VL - 20
SP - 3838
EP - 3841
JO - Langmuir
JF - Langmuir
SN - 0743-7463
IS - 10
ER -