  To evaluate shear viscosity of ethylene glycol oligomers (EGO)/water binary
mixture by means of coarse-grained molecular dynamics (CG-MD) simulations, we
proposed the self-diffusion-coefficient-based parameterization of non-bonded
interactions among CG particles. Our parameterization procedure consists of
three steps: 1) determination of bonded potentials, 2) scaling for time and
solvent diffusivity, and 3) optimization of Lennard-Jones parameters to
reproduce experimental self-diffusion coefficient and density data. With the
determined parameters and the scaling relations, we evaluated shear viscosities
of aqueous solutions of EGOs with various molecular weights and concentrations.
Our simulation result are in close agreement with the experimental data. The
largest simulation in this article corresponds to a 1.2 microseconds atomistic
simulation for 100,000 atoms. Our CG model with the parameterization scheme for
CG particles may be useful to study the dynamic properties of a liquid which
contains relatively low molecular weight polymers or oligomers.
