Stability of films with nanoparticles |
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Authors: | Sethumadhavan Gopi Nikolov Alex Wasan Darsh |
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Institution: | Department of Chemical and Environmental Engineering, Illinois Institute of Technology, Chicago, IL 60616, USA. |
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Abstract: | Numerous products (such as paints, inks, foods, and beverages) and processes (such as coating, coagulation, sedimentation, lubrication, and paper-making) depend on the stability of the liquid films separating the dispersed phase from the continuous phase in the presence of nanoparticles or surfactant micelles. Nanoparticles exhibit a tendency to form ordered layers (i.e., stratification) and particle in-layer structures in these thin films at a sufficiently high concentration, resulting in a structural force that stabilizes the dispersion. The dispersion stability depends on the film size and the nanoparticle concentration. |
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