Dynamic properties of aqueous solutions of ethylene glycol oligomers as measured by the pulsed gradient spin-echo NMR technique at 25[deg ]C

1997 ◽  
Vol 93 (22) ◽  
pp. 3961-3966 ◽  
Author(s):  
Luigi Ambrosone ◽  
Gerardino D'Errico ◽  
Roberto Sartorio ◽  
Lucia Costantino
1997 ◽  
Vol 5 (4) ◽  
pp. 339-356 ◽  
Author(s):  
Nilhan Kayaman ◽  
Oǧuz Okay ◽  
Bahattin M. Baysal

1998 ◽  
Vol 102 (24) ◽  
pp. 4809-4812 ◽  
Author(s):  
Akio Ohta ◽  
Takanori Takiue ◽  
Norihiro Ikeda ◽  
Makoto Aratono

2013 ◽  
Vol 12 (06) ◽  
pp. 1350051 ◽  
Author(s):  
TAMIO YAMAZAKI

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 results are in close agreement with the experimental data. The largest simulation in this article corresponds to a 1.2 μs 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.


1996 ◽  
Vol 92 (7) ◽  
pp. 1163-1166 ◽  
Author(s):  
Luigi Ambrosone ◽  
Roberto Sartorio ◽  
Antonietta Vescio ◽  
Vincenzo Vitagliano

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