Abstract
When a drop of fluid detaches from a capillary, singular behavior ensues. We show that the addition of very small amounts of polymer inhibits this singularity in an abrupt way and gives rise, after a period of self-similar dynamics as for simple liquids, to long-lived cylindrical necks or filaments which thin exponentially in time. This abrupt change occurs when the elongation rate becomes comparable to the inverse of the polymer relaxation time leading to a large elongational viscosity of the dilute polymer solution.
- Received 16 May 2000
DOI:https://doi.org/10.1103/PhysRevLett.86.3558
©2001 American Physical Society