Interactions between colloidal particles induced by polymer brushes grafted onto the substrate

Article Abstract:

The interaction energy between two colloidal particles on or immersed in nonadsorbing polymer brushes grafted onto the surface as a function of the separation of the particles by the use of self-consistent-field theory calculation is investigated. The result may suggest an approach for controlling the self-assembling behavior of colloids for the formation of target structures, by tuning the colloidal interaction on the grafting substrate under appropriate selection of colloidal size, effective gravity and brush coverage density.

Adsorption

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Diffusiophoresis of concentrated suspensions of spherical particles with distinct ionic diffusion velocities

Article Abstract:

The diffusiophoresis of a concentrated colloidal dispersion is analyzed theoretically for the case when both the zeta potential and the thickness of a double layer can assure an arbitrary value focused on the influence of distinct ionic diffusion velocities. It is found that the influence of steric hindrance on the fluid flow should be considered, as the colloidal dispersions are becoming more and more concentrated.

Diffusion, Diffusion (Physics), Ionic crystals

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Electrophoresis of a biocolloid covered with a cation-absorptive membrane

Article Abstract:

A study is conducted on the electrophoretic behavior of a biocolloid, which is covered with a charged cation-absorptive membrane. The results of this study suggest that a larger absolute value of the electrophoric mobility of biocolliods generate large membrane electricity.

Electric properties, Electrophoresis

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