Dynamic crossover scaling in polymer solutions
arXiv:1205.1363 · doi:10.1103/PhysRevLett.109.088302
Abstract
The crossover region in the phase diagram of polymer solutions, in the regime above the overlap concentration, is explored by Brownian Dynamics simulations, to map out the universal crossover scaling functions for the gyration radius and the single-chain diffusion constant. Scaling considerations, our simulation results, and recently reported data on the polymer contribution to the viscosity obtained from rheological measurements on DNA systems, support the assumption that there are simple relations between these functions, such that they can be inferred from one another.
4 pages, 6 figures, 1 Table. Revised version to appear in Physical Review Letters. Includes supplemental materials
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- Parameter-free prediction of DNA dynamics in planar extensional flow of semidilute solutions
- Shear thinning in dilute and semidilute solutions of polystyrene and DNA
- Brownian dynamics simulations of planar mixed flows of polymer solutions at finite concentrations
- Simulation of semidilute polymer solutions in planar extensional via conformationally averaged Brownian noise
- Size, shape and diffusivity of a single Debye-Hückel polyelectrolyte chain in solution
- Universal scaling and characterisation of gelation in associative polymer solutions
- Polymer Solutions
- Linear Viscoelasticity of Semidilute Unentangled Flexible Polymer Solutions