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Interfacial Energy in Phase-Separated Glasses from Emulsion Rheology

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Classical theories of emulsion rheology yield information on the deformation of a liquid drop dispersed into another liquid matrix phase. By connecting the deformation and relaxation, respectively, and the capillary number of the dispersed phase, interfacial energy can be estimated. This was applied to demixing borosilicate and lead borate glasses, which are known to exhibit significant form anisotropy after elongation. Interfacial energies in these two systems were calculated based on graphical data of prior isothermal elongation experiments. The method is discussed in terms of experimental difficulties. It might provide an alternative way to overcome the obvious lack of information on interfacial energies in glasses.

Document Type: Research Article


Affiliations: 1: Institut für Nichtmetallische Werkstoffe, TU Clausthal, Germany 2: University of Barcelona, Barcelona, Spain 3: Schott AG, Mainz, Germany

Publication date: June 1, 2005


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