Colloids, stability of lyophobic

The stability of lyophobic colloids is intimately associated with the electrical charge on the particles. Thus in the formation of an arsenic(III) sulphide sol... 

EJV Verwey and J Th G Overbeek, Theory of the Stability of Lyophobic Colloids, Elsevier, Amsterdam, 1948. 

REFERENCE VERWEY AND OVERBEEK THEORY OF THE STABILITY OF LYOPHOBIC COLLOIDS... 

Varanasi, P. P., Ryan, M. E., and Stroeve, P., Experimental study on the breakup of model viscoelastic drops in uniform shear flow. I EC Research 33, 1858-1866 (1994). Verwey. E. J., and Overbeek, J. T. G., Theory of the Stability of Lyophobic Colloids. ... 

Verwey, E.J.W. Overbeek, J.Th.G. (1948) Theory of stability of lyophobic colloids. Elsevier, Amsterdam... 

It is also important to emphasize that conventional consciousness of colloid or fine particle technology, like better dispersion and control of rheological properties of dipping solution, are not to be overlooked. The growth of nanoparticles in liquid phase is almost exactly regulated by the nuclei-growth theory as well as stability of lyophobic colloids suggested half a century ago. 

FIG. 13.8 Plot of ne, versus d, the minimum separation between surfaces, for two spheres of equal radius (100 nm). Curves are drawn for different values of k with constant values of A (2 10 19 J) and p0 (25.7 mV). (Redrawn with permission from E. J. W. Verwey and J. Th. G. Overbeek, Theory of the Stability of Lyophobic Colloids, Elsevier, Amsterdam, Netherlands, 1948.)... 

LYKLEMA, J., Principles of the stability of lyophobic colloidal dispersions in non-aqueous media , Advan. Colloid Interface Sci., 2, 65-114 (1968)... 

A considerable advance was made in the 1940 s when in the theories of Derjaguin and Landau (11) and Verwey and Overbeek (12) a theory of the stability of lyophobic colloids was obtained by assuming the pairwise additivity of the potential energy of electrostatic repulsion, VR, and the van der Waals attraction,... 

The stability of latexes during and after polymerization may be assessed at least qualitatively by the theoretical relationships describing the stability of lyophobic colloids. The Verwey-Overbeek theory (2) combines the electrostatic forces of repulsion between colloidal particles with the London-van der Waals forces of attraction. The electrostatic forces of repulsion arise from the surface charge, e.g., from adsorbed emulsifier ions, surface sulfate endgroups introduced by persulfate initiator, or ionic groups introduced by using functional monomers. These electro-... 

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