منابع مشابه
Drag reduction and solvation in polymer solutions
A model is described which explains drag reduction (DR) in dilute polymer solutions in terms of solvation of macromolecular chains and formation of relatively stable domains. The domains partly suppress the vortex formation, act as energy sinks, and also play a role in mechanical degradation in flow (MDF). We report ultrasonically determined solvation numbers for a series of copolymers with the...
متن کاملSolvation of Ions in Aqueous Solutions of Hydrophobic Solutes
The self-diffusion of N a + , E t 4 N + and I in mixtures of water with n-propanol at 25 °C and with lert-butanol at 30 °C was measured as function of salt concentration and solvent composition. The limiting self-diffusion coefficients of the ions were used to compute the ionic radii. The influence of the composition of the solvent on the solvation of the ions is discussed. In aqueous solutions...
متن کاملSolvation in high-temperature electrolyte solutions. II. Some formal results
Our molecular-based formalism for infinitely dilute supercritical nonelectrolyte solutions is extended to electrolyte solutions by establishing rigorous connections between the microscopic behavior of the solvent around individual ionic species and their macroscopic solvation behavior. The formalism relies on the unambiguous splitting of the mixture’s properties into short-ranged ~finite! and l...
متن کاملAccurate description of calcium solvation in concentrated aqueous solutions.
Calcium is one of the biologically most important ions; however, its accurate description by classical molecular dynamics simulations is complicated by strong electrostatic and polarization interactions with surroundings due to its divalent nature. Here, we explore the recently suggested approach for effectively accounting for polarization effects via ionic charge rescaling and develop a new an...
متن کاملClustering and Solvation in Poly(acrylic acid) Polyelectrolyte Solutions
† Center for Neutron Research, NIST. ‡ National Institutes of Health. § Polymers Division, NIST. * Corresponding author. E-mail [email protected]. National Institute of Standards and Technology, Center for Neutron Research, 100 Bureau Drive, Gaithersburg, Maryland 20899-8562; National Institutes of Health, NICHD, Laboratory of Integrative and Medical Biophysics, 13 South Drive, Bethesda, Maryla...
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ژورنال
عنوان ژورنال: Nature
سال: 1991
ISSN: 0028-0836,1476-4687
DOI: 10.1038/351534b0