Dispersion and stability of colloidal boron carbide suspensions

Destabilization of Colloidal Suspensions 3.1 COLLOIDAL SUSPENSIONS

Many impurities in waters and wastewaters are present as colloidal dispersions, i.e. they occur in particulate form within the approximate size range 1 to 10 -3 μm (refer Fig 1.3). Examples of this type of suspension include clays, substances of biological origin such as natural colour, proteins, carbohydrates and their natural or industrial derivatives. Invariably suspensions of this type poss...

Ion specificity and the theory of stability of colloidal suspensions.

A theory is presented which allows us to accurately calculate the critical coagulation concentration of hydrophobic colloidal suspensions. For positively charged particles, the critical coagulation concentrations follow the Hofmeister (lyotropic) series. For negatively charged particles, the series is reversed. We find that strongly polarizable chaotropic anions are driven towards the colloidal...

Numerical Results for the Dielectric Dispersion Parametersof Colloidal Suspensions

Numerical Results for the Dielectric Dispersion Parameters of Colloidal Suspensions C. Grosse,∗,1 F. J. Arroyo,† V. N. Shilov,‡ and A. V. Delgado§ ∗Departamento de Fı́sica, Universidad Nacional de Tucumán, Av. Independencia 1800, (4000) San Miguel de Tucumán, Argentina; and Consejo Nacional de Investigaciones Cientı́ficas y Técnicas, Argentina; †Departamento de Fı́sica, Facultad de Ciencias Experi...

Gravitational stability of suspensions of attractive colloidal particles.

Colloidal suspensions are susceptible to gravitationally induced phase separation. This can be mitigated by the formation of a particle network caused by depletion attraction. The effectiveness of this network in supporting the buoyant weight of the suspension can be characterized by its compressional modulus. We measure the compressional modulus for emulsion networks induced by depletion attra...

Boron carbide/n-silicon carbide heterojunction diodes