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Cited by 379

The DOI matches its Crossref record; 34 of the 34 references it cites were found in a registry or an index.

Mobility of Nonsticky Nanoparticles in Polymer Liquids

Open access
Cai, Li-Heng, Panyukov, Sergey, Rubinstein, Michael·2011·Macromolecules
DOI 10.1021/ma201583q
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Abstract

We use scaling theory to derive the time dependence of the mean-square displacement ⟨Δ r 2 ⟩ of a probe nanoparticle of size d experiencing thermal motion in polymer solutions and melts. Particles with size smaller than solution correlation length ξ undergo ordinary diffusion (⟨Δ r 2 ( t )⟩ ∼ t ) with diffusion coefficient similar to that in pure solvent. The motion of particles of intermediate size (ξ < d < a ), where a is the tube diameter for entangled polymer liquids, is subdiffusive (⟨Δ r 2 ( t )⟩ ∼ t 1/2 ) at short time scales since their motion is affected by subsections of polymer chains. At long time scales the motion of these particles is diffusive, and their diffusion coefficient is determined by the effective viscosity of a polymer liquid with chains of size comparable to the particle diameter d . The motion of particles larger than the tube diameter a at time scales shorter than the relaxation time τ e of an entanglement strand is similar to the motion of particles of intermediate size. At longer time scales ( t > τ e ) large particles ( d > a ) are trapped by entanglement mesh, and to move further they have to wait for the surrounding polymer chains to relax at the reptation time scale τ rep . At longer times t > τ rep, the motion of such large particles ( d > a ) is diffusive with diffusion coefficient determined by the bulk viscosity of the entangled polymer liquids. Our predictions are in agreement with the results of experiments and computer simulations.

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Metadata

Authors
Cai, L.-H., Panyukov, S., & Rubinstein, M.
Venue
Macromolecules
Publisher
American Chemical Society (ACS)
Published
2011-09-13
Volume
44
Issue
19
Pages
7853-7863
ISSN
  • 0024-9297 (ISSN-L)
  • 1520-5835
DOI
10.1021/ma201583q
OpenAlex
W2095249350
Cited by
379
References
34
FWCI
6.82
Type
journal article
Language
en
Open access
green

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