A strain-controlled RheoSANS instrument for the measurement of the microstructural, electrical, and mechanical properties of soft materials

The Review of Scientific Instruments
Jeffrey J RichardsPaul Butler

Abstract

In situ measurements are an increasingly important tool to inform the complex relationship between nanoscale properties and macroscopic material measurements. Knowledge of these phenomena can be used to develop new materials to meet the performance demands of next generation technologies. Conductive complex fluids have emerged as an area of research where the electrical and mechanical properties are key design parameters. To study the relationship between microstructure, conductivity, and rheology, we have developed a small angle neutron scattering (SANS) compatible Couette rheological geometry capable of making impedance spectroscopy measurements under continuous shear. We have also mounted this geometry on a commercial strain controlled rheometer with a modified forced convection oven. In this manuscript, we introduce the simultaneous measurement of impedance spectroscopy, rheological properties and SANS data. We describe the validation of this dielectric RheoSANS instrument and demonstrate its operation using two systems-an ion gel comprising Pluronic® surfactant and ionic liquid, ethyl-ammonium nitrate, and poly(3-hexylthiophene) organogel prepared in a mixture of hexadecane and dichlorobenzene. In both systems, we use this...Continue Reading

References

Nov 1, 2005·Journal of Colloid and Interface Science·A D Hollingsworth, D A Saville
Apr 12, 2006·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Matthew W LiberatoreLionel Porcar
Feb 25, 2014·Journal of Visualized Experiments : JoVE·A Kate GurnonLionel Porcar
Jan 20, 2016·Soft Matter·Michelle A CalabreseSimon A Rogers
Jan 26, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Aditya NarayananMichael H G Duits
Apr 28, 2017·Journal of Visualized Experiments : JoVE·Jeffrey J RichardsPaul D Butler

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Citations

Apr 15, 2020·NPJ Biofilms and Microbiomes·Saikat JanaJinju Chen
Mar 6, 2019·The Review of Scientific Instruments·Aditya NarayananMichael H G Duits
Sep 23, 2021·The Journal of Physical Chemistry. B·Noah H ChoJeffrey J Richards

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