Inhomogeneity of viscous aqueous solutions

G. Barshtein*, A. Almagor, S. Yedgar, B. Gavish

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

Brownian principles for homogeneous media fail to explain the effect of viscous cosolvents on reaction rates. We examined the possibility that solvent viscosity in the microenvironment of a probe η* (microviscosity) differs from the bulk viscosity η (macroviscosity). η* was derived from the diffusion constant D of water tracers, measured in the presence of viscous cosolvents. We found that (a) η*ηα, where 0≤α≤1, and (b) the temperature dependence of D is insensitive to the presence of these cosolvents. We propose that viscous aqueous solutions have an inhomogeneous microstructure with waterlike domains.

Original languageAmerican English
Pages (from-to)555-557
Number of pages3
JournalPhysical Review E
Volume52
Issue number1
DOIs
StatePublished - 1995

Fingerprint

Dive into the research topics of 'Inhomogeneity of viscous aqueous solutions'. Together they form a unique fingerprint.

Cite this