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Issue 2, 2008
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Scaling of nanoparticle retardation in semi-dilute polymer solutions

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Abstract

We analyze the scaling law for the polymer-induced retardation a nanoparticle experiences as it moves through a semi-dilute polymer solution. The translational friction is calculated from a modified Stokes flow using a local viscosity near the nanosphere. The results rationalize a general retardation factor, R = exp(Kaµcν) [T. Odijk, Biophys. J., 2000, 79, 2314], revealing scaling exponents µ = 0.77 and ν = 1, which are in agreement with experiment. We find that rotational motion also has a self-similar behavior and R can be described too by a stretched exponential with slightly different exponents.

Graphical abstract: Scaling of nanoparticle retardation in semi-dilute polymer solutions

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Publication details

The article was received on 03 Aug 2007, accepted on 01 Nov 2007 and first published on 21 Nov 2007


Article type: Communication
DOI: 10.1039/B711902J
Citation: Soft Matter, 2008,4, 254-257
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    Scaling of nanoparticle retardation in semi-dilute polymer solutions

    R. Tuinier and T. Fan, Soft Matter, 2008, 4, 254
    DOI: 10.1039/B711902J

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