Polymer size in dilute solutions in the good-solvent regime

Sergio Caracciolo; Bortolo Matteo Mognetti; Andrea Pelissetto

doi:10.1063/1.2339015

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Polymer size in dilute solutions in the good-solvent regime

Sergio Caracciolo·Bortolo Matteo Mognetti·Andrea Pelissetto

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Abstract

We determine the density expansion of the radius of gyration, of the hydrodynamic radius, and of the end-to-end distance for a monodisperse polymer solution in good-solvent conditions. We consider the scaling limit (large degree of polymerization), including the leading scaling corrections. Using the expected large-concentration behavior, we extrapolate these low-density expansions outside the dilute regime, obtaining a prediction for the radii for any concentration in the semidilute region. For the radius of gyration, comparison with field-theoretical predictions shows that the relative error should be at most 5% in the limit of very large polymer concentrations.

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Sergio Caracciolo, Bortolo Matteo Mognetti, Andrea Pelissetto. 2006-06-27. Polymer size in dilute solutions in the good-solvent regime. https://doi.org/10.1063/1.2339015

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