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. 2024 Feb 1;95(2):025108.
doi: 10.1063/5.0169326.

A method for rheological measurements of air sensitive samples

Ben A Russell  1 , Klaas Wynne  1
Affiliations

A method for rheological measurements of air sensitive samples

Ben A Russell et al. Rev Sci Instrum. .

Abstract

The rheology of air or moisture sensitive liquids, gels, and glasses requires complicated rheometer-in-glovebox laboratory setups. Here, we demonstrate the use of a heavier-than-air cover gas, sulfur hexafluoride, and the design of a cover gas container that can attach to the lower geometry plate of any rheometer to carry out rheology experiments on air-sensitive liquids and soft solids. Rheological measurements of air-reactive ionic liquid trimethylsulfonium bromide-AlCl3, moisture sensitive titanium(IV) propoxide, and glycerin demonstrate the effectiveness of the cover-gas method for loading samples on acquiring correct temperature dependent viscosity data of the sample in the absence of reaction products.

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