Hydrodynamic and viscoelastic effects in polymer diffusion

✍ Scribed by Farago, J; Meyer, H; Baschnagel, J; Semenov, A N

• Book ID: 120819808
• Publisher: Institute of Physics
• Year: 2012
• Tongue: English
• Weight: 304 KB
• Volume: 24
• Category: Article
• ISSN: 0953-8984
• DOI: 10.1088/0953-8984/24/28/284105

✦ Synopsis

We develop a fluctuating hydrodynamics approach to study the impact of the hydrodynamic and viscoelastic interactions on the motion of the center of mass of a polymer as well as on the relaxation of Rouse modes, either in a Θ solvent or in a melt of identical unentangled chains. We show that this method allows us to describe the effect of hydrodynamic interactions beyond the Zimm (for a single chain in a Θ solvent) or the Rouse models (for an unentangled melt). In the latter case, we recover the same important effect of the viscoelastic hydrodynamic interactions on the center-of-mass diffusion, first described in Farago et al (2011 Phys. Rev. Lett. 107 178301).