Transport coefficients, effect hydration

The results presented can be easily applied to obtain the effects of the field due to the charged anionic sites on the transport coefficients of the hydrated protons and also provide valuable insight into those domains in the pore where these hydrated species are most likely to occur. In determining the effects of the anionic sites the formula (22) very easily reveals the influence of such morphological features as the pendant chain length and the surface charge density. 

The study of the dynamical behavior of water molecules and protons as a function of the state of hydration is of great importance for understanding the mechanisms of proton and water transport and their coupling. Such studies can rationalize the influence of the random self-organized polymer morphology and water uptake on effective physicochemical properties (i.e., proton conductivity, water permeation rates, and electro-osmotic drag coefficients). 

Effect of Microemulsion Structure on the Transport Properties. It appears from the discussion above that the reduction in the ionic conductivity and water self-diffusion coefficient is primarily attributable to hydration effects, not principally to changes in the structure of the microemulsion with higher phase volume. 

Poly(vinyl alcohol) (PVA) membranes containing silver salts were prepared by severd methods and found to be effective for the separation of benzene and cyclohexane using hydrated liquid feed and sweep streams. Benzene/cyclohexane selectivides exceeded 30 and benzene permeabilities exceeded 1 pm kg m-2 hrl. Removal of the casting solvent by fieeze-drying results in a membrane with a uniform distribution of silver. Despite the large selectivities observed in transport experiments, benzene and cyclohexane absorb equally well into die membranes and exhibit similar diffusion coefficients. 

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