Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Volume-fraction-induced percolation

Discuss the elemental fractionation induced by the percolation of a melt with specific density 2.7 through a porous matrix with specific density 3.4 for different values of Di and volume porosity [Pg.516]

The effects of volume fraction of the dispersed phase and of temperature on the conductivity behavior are intimately related. An increase of temperature can induce a conductivity percolation in a situation where O is not high enough for percolation to occur. This is clearly demonstrated in a study of AOT/decane/aqueous 0.5% NaCl system. The... [Pg.252]

The effect of urea has been much investigated because urea can modify the properties of compartmentalized water. Added to water/AOT/heptane system at low concentration (0.01 M), it hardly changed the conductivity variation as a function of the droplet volume fraction. However, when urea was added to water/AOT/hexane reverse micelles at concentrations up to 10 M, the percolation threshold was shifted to very low water volume fractions 0.05 and 0.02 for urea concentrations 3 M and 5 M, respectively. Urea is assumed to preferentially bind at the micelle/water interface, thus inducing a counterion dissociation from surfactant head groups. This effect, which is analogous to the effect of short-... [Pg.256]

See other pages where Volume-fraction-induced percolation is mentioned: [Pg.253]    [Pg.244]    [Pg.261]    [Pg.253]    [Pg.244]    [Pg.261]    [Pg.251]    [Pg.242]    [Pg.174]    [Pg.103]    [Pg.179]    [Pg.252]    [Pg.44]    [Pg.243]    [Pg.403]    [Pg.367]    [Pg.2394]    [Pg.15]    [Pg.48]    [Pg.66]    [Pg.71]    [Pg.268]    [Pg.290]    [Pg.265]    [Pg.211]    [Pg.21]    [Pg.382]    [Pg.462]    [Pg.1745]    [Pg.288]    [Pg.220]   
See also in sourсe #XX -- [ Pg.244 ]



SEARCH



Percolates

Percolating

Percolation

Percolators

Percoll

© 2024 chempedia.info