TA INSTRUMENTS: Rheometer
A new high-sensitivity pressure cell is now available for the ARES-G2 rheometer. This accessory reportedly enables scientists to perform sensitive viscoelastic measurements under controlled atmospheric pressure and temperature and, for the first time, gain detailed understanding of complex fluid behavior in complex environments.
Many materials are processed or used at temperatures that are near or above their atmospheric boiling point; applying elevated atmospheric pressure is an effective way to suppress this boiling. While pressurized devices for rheometers are relatively common, existing devices reportedly use mechanical bearings that can impede measurements of very low viscosity fluids, and especially the accurate determination of viscoelastic properties that describe a material’s elasticity, ability to support dispersed phases, and other traits.
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