Interfacial colloid brushes

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Colloidal systems are ubiquitous in nature (e.g., proteins or nanoparticles could be studied as colloidal particles). By inducing colloid-colloid attractions or repulsions it is possible to precipitate the colloids out of a dispersion, or to promote the dispersion stability, respectively. To induce colloid-colloid repulsions it is common practice to graft polymer chains on the colloids. This procedure is also useful in preventing colloid adsorption onto a surface. This module shows that colloid brush-surface interactions are dictated by a balance between entropic and enthalpic phenomena due to the grafted polymer chains.

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