Yielding and flow in adhesive and non-adhesive concentrated emulsions

Details Yielding and flow in adhesive and non-adhesive concentrated emulsions Yielding and flow in adhesive and non-adhesive concentrated emulsions

2006-03-07

arxiv.org/abs/cond-mat/0603171v1

Phys. Rev. Lett. 96, 138302 (2006)

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 5 figures, to appear in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.96.138302

The nonlinear rheological response of soft glassy materials is addressed experimentally by focusing on concentrated emulsions where interdroplet attraction is tuned through varying the surfactant content. Velocity profiles are recorded using ultrasonic velocimetry simultaneously to global rheological data in the Couette geometry. Our data show that non-adhesive and adhesive emulsions have radically different flow behaviors in the vicinity of yielding: while the flow remains homogeneous in the non-adhesive emulsion and the Herschel-Bulkley model for a yield stress fluid describes the data very accurately, the adhesive system displays shear localization and does not follow a simple constitutive equation, suggesting that the mechanisms involved in yielding transitions are not universal.

Affiliated with

Also associated with

No associations

Rating

Yielding and flow in adhesive and non-adhesive concentrated emulsions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Yielding and flow in adhesive and non-adhesive concentrated emulsions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Yielding and flow in adhesive and non-adhesive concentrated emulsions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-365920