The coexistence curves (CC) of two binary mixtures, methanol-heptane (M-H) and perfluorodekaline-heptan (PFD-H), are measured for two temperature modes, namely heating and cooling. Distinctions in the behavior of the two systems in different temperature modes are revealed. For the M-H system this is likely to be attributed to the effects of surface processes and for the PFD-H systems, to the formation of colloidal structures. An additional signal related to the contribution of a meniscal layer is found and measured.
42.25.Gy Edge and boundary effects; reflection and refraction
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Physics Faculty, Chair of Molecular Physics, Moscow State University, Moscow, 119991, Russia
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