Abstract:
We investigate the drift of an end-labeled telehelic polymer chain in a frozen disordered medium under the action of a constant force applied to the one end of the macromolecule by means of an off-lattice bead spring Monte Carlo model. The length of the polymers N is varied in the range 8 < N < 128, and the obstacle concentration in the medium C is varied from zero up to the percolation threshold C≈ 0.75. For field intensities below a C-dependent critical field strength B c, where jamming effects become dominant, we find that the conformational properties of the drifting chains can be interpreted as described by a scaling theory based on Pincus blobs. The variation of drag velocity with C in this interval of field intensities is qualitatively described by the law of Mackie-Meares. The threshold field intensity B c itself is found to decrease linearly with C.
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Received 20 August 2001 and Received in final form 19 November 2001
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Avramova, K., Milchev, A. Drift of a polymer chain in a porous medium --A Monte Carlo study. Eur. Phys. J. E 7, 65–71 (2002). https://doi.org/10.1140/epje/i200101124
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DOI: https://doi.org/10.1140/epje/i200101124