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 |
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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