Abstract
We have studied the flow of thermodynamically ideal solutions of a high molecular weight (Mw=6.9MDa) atactic polystyrene in the θ solvent dioctyl phthalate (aPS in DOP) through a micro-fabricated 8:1 planar abrupt contraction geometry. The channel is much deeper than most micro-scale geometries, providing an aspect ratio of 16:1 and a good approximation to 2D flow in the narrow channel. The solutions span a range of concentration 0.03wt.%
| Original language | English |
|---|---|
| Pages (from-to) | 1654-1669 |
| Number of pages | 15 |
| Journal | Journal of Non-Newtonian Fluid Mechanics |
| Volume | 165 |
| Issue number | 23-24 |
| DOIs | |
| Publication status | Published - Dec 2010 |
Keywords
- Birefringence
- Contraction flow
- Micro-fluidics
- Particle image velocimetry
- Polymer solution