Abstract
Capillary thinning of polymeric fluids is central to biological and industrial processes, yet the mechanisms governing thinning dynamics remain unresolved, especially for semi-flexible polymers. Using ideal solutions of semi-flexible DNA, we validate a phenomenological model for exponential capillary thinning that accounts for each polymer in the molecular weight distribution. For semi-flexible polymers, self-selection of the exponential time constant occurs by a fundamentally different mechanism than for highly flexible systems, and is not simply governed by the longest polymers in the molecular weight distribution.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 531-540 |
| Number of pages | 10 |
| Journal | Rheologica Acta |
| Volume | 64 |
| Issue number | 9-10 |
| DOIs | |
| State | Published - Oct 2025 |
Keywords
- Polymer solutions
- elastocapillarity
- extensional flows
- fluid filaments
- polydispersity
- polymer dynamics
- semi-flexible polymers
ASJC Scopus subject areas
- Chemical Engineering (miscellaneous)
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
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