Polymer dynamics during capillary flow into nanopores

ORAL

Abstract

Ordered arrays of parallel cylindrical nanopores (with a narrow pore size distribution and diameters down to 10 nm) are used as measurement platforms in the field of polymer nano-fluidics, in particular, to investigate the capillary flow of polymers in 2D geometrical nano-confinement. Several aspects of the polymer dynamics -- manifested on time scales covering more than 10 orders of magnitude -- are investigated during the flow process: (i) molecular fluctuations corresponding to the segmental dynamics (dynamic glass transition), (ii) chain dynamics, as revealed -- for the case of type-A polymers -- in fluctuations of the end-to-end distance, (iii) velocity of the capillary flow in dependence on the diameter of the nanopores. The results are compared to the polymer dynamics in the bulk.

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Authors

  • Anatoli Serghei

    • University of Massachusetts Amherst

  • Thomas Russell

    • University of Massachusetts Amherst
    • Univ. Massachusetts Amherst, Dept. of Polymer Sci. Eng.
    • University of Massachusetts
    • Polymer Science and Engineering Department, University of Massachusetts Amherst
    • Department of Polymer Science and Engineering University of Massachusetts Amherst
    • University of Massachusetts, Amherst
    • University of Massuchusetts at Amherst
    • Department of Polymer Science and Engineering, University of Massachusetts Amherst
    • University of Massachusetts-Amherst
    • Department of Polymer Science and Engineering, University of Massachusetts, Amherst
    • Polymer Science and Engineering Department, University of Massachusetts-Amherst