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  • PACS. 83.20.Fk Reptation theories - 83.20.Jp Computer simulation - 83.10.Nn Polymer dynamics  (1)
  • Renormalizationgroup  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Reptational dynamics of a polymer chain is stable against kinematic disorder (1999)
    Springer
    The European physical journal 10 (1999), S. 105-117 
    Details
    ISSN: 1434-6036
    Keywords: PACS. 83.20.Fk Reptation theories - 83.20.Jp Computer simulation - 83.10.Nn Polymer dynamics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: We study the diffusive motion of a (non-selfinteracting) chain through a quenched random environment, constructed such that it influences only the local dynamics but not the equilibrium configuration of the chain. Our Monte Carlo results show that this type of disorder, which we call kinematic, does not ruin reptation. This is in sharp contrast to disorder including also entropic traps and it supports the view that reptation prevails in melts, where in contrast to a gel entropic trapping is absent. Our data show the characteristic features of reptation, irrespective of the dilution or randomness of the kinematic obstacles. Our Monte Carlo results are in quantitative agreement with our recent detailed analytical evaluation of the reptation model (J. Stat. Phys. 90, 1325 (1998)). The analysis suggests that we effectively see reptation of a “blob”-chain, where the size of the blob rapidly increases with decreasing obstacle concentration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100510050834
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  • 2
    Electronic Resource
    Electronic Resource
    Equilibrium properties of ternary polymer solutions as explained by the renormalization group (1990)
    Springer
    Colloid & polymer science 268 (1990), S. 995-1017 
    Details
    ISSN: 1435-1536
    Keywords: Ternarypolymersolutions ; Renormalizationgroup ; scalingfunctions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract In this paper we present a full account of renormalization group theory as applied to equilibrium properties of ternary polymer solutions containing two different polymer species and one solvent. We use a carefully constructed renormalization group mapping incorporating the screening effect by a proper choice of the renormalized segment size. The scaling functions reproducing observable quantities are calculated to tree approximation. We have evaluated a series of experiments on ternary solutions in this approximation and observe remarkably good agreement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01410588
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