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2018 | 133 | 5 | 1274-1280
Article title

Statistical Properties of a Polymer Chain in the Environment with Low Concentration of Nanoparticles

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EN
Abstracts
EN
We have investigated the statistical properties of polymer in the environment with low concentration of nanoparticles by using large-scale molecular dynamics simulations. The scaling law for the mean square radius of gyration was examined and simulation results for the polymer lengths 64≤N≤144 yielding a reasonably accurate value of the Flory exponent ν=0.58 at weak polymer-nanoparticle interaction ε_{PN}. Within the same range of N, the mean asphericity of the chain is independent of N. We found that the polymer behaves like a self-avoiding walk chain at small ε_{PN} and a compact sphere at large ε_{PN}. The results are attributed to the increase in the contact between polymer and nanoparticles with increasing ε_{PN}. Normal diffusions of polymer are always observed at whatever ε_{PN} and size and concentration of nanoparticles. Our result shows that the normal diffusion behavior of polymer is independent of polymer's state even though there is a phase transition from a desorbed polymer phase at small ε_{PN} to an adsorbed polymer phase at large ε_{PN}.
Publisher

Year
Volume
133
Issue
5
Pages
1274-1280
Physical description
Dates
published
2018-05
received
2017-09-23
(unknown)
2017-11-16
Contributors
  • Department of Physics, Zhejiang University, Hangzhou 310027, China
author
  • Department of Physics, Zhejiang University, Hangzhou 310027, China
References
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv133n5p23
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