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Self-similarity in the breakup of very dilute viscoelastic solutions
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Self-similarity in the breakup of very dilute viscoelastic solutions
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Journal Article
Self-similarity in the breakup of very dilute viscoelastic solutions
2020
Overview
When pushed out of a syringe, polymer solutions form droplets attached by long and slender cylindrical filaments whose diameter decreases exponentially with time before eventually breaking. In the last stages of this process, a striking feature is the self-similarity of the interface shape near the end of the filament. This means that shapes at different times, if properly rescaled, collapse onto a single universal shape. A theoretical description based on the Oldroyd-B model was recently shown to disagree with existing experimental results. By revisiting these measurements and analysing the interface profiles of very diluted polyethylene oxide solutions at high temporal and spatial resolution, we show that they are very well described by the model.
