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1 entropy Surface, wetting

From my work in surface and colloid chemistry, I was aware of the energetics and mechanics of wetting and spreading. It followed that cis-compounds with their greater entropy of fusion and flexibility must always spread better and stay tackier on the surface under a given set of conditions. I discussed this with Dr. Mark during an afternoon stroll in 1951. He agreed and also pointed out that cis-chains with their more... [Pg.144]

Solution calorimetry can also be used to evaluate amorphous/crystalline content in a binary mixture. The enthalpy of solution for the amorphous compound is an exothermic event, whereas that of the crystalline hydrate is endothermic. Enthalpy of solution is a sum of several thermal events, that is, heat of wetting (incorporating sorption process, such as surface sorption and complexation), disruption of the crystal lattice, and solvation. The order of magnitude of solution enthalpy for the crystalline compound suggests that the disruption of the crystal lattice predominates over the heat of solvation. In addition, the ready solubility of the compotmd in aqueous media is probably governed by entropy considerations. [Pg.221]

Larionov and co-workers (Institute of Physical Chemistry, the U.S.S.R. Academy of Sciences, Moscow) (308-312) carried out systematic theoretical and experimental investigations of the adsorption from liquid solutions of nonelectrolytes on silica adsorbents. They studied the adsorption of individual substances and binary liquid solutions (benzene/carbon tetrachloride, carbon tetrachloride/isooctane, benzene/isooctane, etc.) on Si02 samples with different degrees of porosity but identical surface chemical properties. The experimental results were compared with the theoretical calculations carried out by the Gibbs method. This procedure made it possible to calculate the dependence of the enthalpy, entropy, and free energy of wetting on the concentration and to obtain expressions describ-... [Pg.626]

S Wetted surface area of particle (70) velocity gradient (269a) 5 Time rate of irreversible, entropy production (footnote 55)... [Pg.426]

See other pages where 1 entropy Surface, wetting is mentioned: [Pg.117]    [Pg.89]    [Pg.144]    [Pg.111]    [Pg.111]    [Pg.155]    [Pg.175]    [Pg.577]    [Pg.22]    [Pg.104]    [Pg.260]    [Pg.252]    [Pg.370]    [Pg.93]    [Pg.121]    [Pg.229]    [Pg.875]    [Pg.294]    [Pg.75]    [Pg.139]    [Pg.111]    [Pg.314]    [Pg.155]    [Pg.821]    [Pg.407]    [Pg.389]    [Pg.288]    [Pg.125]    [Pg.772]    [Pg.304]    [Pg.75]    [Pg.343]    [Pg.15]    [Pg.57]    [Pg.412]    [Pg.243]   
See also in sourсe #XX -- [ Pg.646 ]



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Surface entropy

Wetted surface

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