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Physics of Polymer Mixtures at High-Pressure

Several physical properties of polymer/gas systems are measured in this lab. Recently we coupled a gravimetric technique with an optical technique to measure, concurrently, fully experimentally, solubility, diffusivity, interfacial tension and specific volume of polymer/gas mixtures up to 250°C and 13.5MPa. The technique has been reported on Polymer Testing journal in 2011.

Scheme of the sorption experiment and Axisymmetric Drop Shape Analysis (ADSA) coupling and picture of the samples and, below, a view of the Rubotherm magnetic suspension balance with the BG dosing system and the view cell installed on the balance.

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Ernesto Di Maio

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