Flow of dilute to semi-dilute polystyrene solutions through a benchmark 8:1 planar abrupt micro-contraction

Simon J. Haward, Zhuo Li, Daniel Lighter, Ben Thomas, Jeffrey A. Odell, Xue Feng Yuan

    Research output: Contribution to journalArticlepeer-review

    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 languageEnglish
    Pages (from-to)1654-1669
    Number of pages15
    JournalJournal of Non-Newtonian Fluid Mechanics
    Volume165
    Issue number23-24
    DOIs
    Publication statusPublished - Dec 2010

    Keywords

    • Birefringence
    • Contraction flow
    • Micro-fluidics
    • Particle image velocimetry
    • Polymer solution

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