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Friday, February 21 • 9:00am - 9:30am
Slippery, Smooth or Sticky? Using Tribo-Rheometry to Characterize Sensory Perception of Coated Surfaces - TA Instruments

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Tribology capabilities on commercial rheometers have enabled measurements at lower load forces, friction forces and sliding speeds than industrial tribometers.  These “soft tribology” measurements have proven useful in predicting sensory properties such as mouthfeel or texture.  As tribology is a measurement of surface interactions, the results are highly dependent on test fixture material.  To detect differences perceived by human touch, it is beneficial to select materials that mimic the surface properties of our skin.  Sensory perception is also a consideration for high-contact solid surfaces like personal electronics, or coatings for surfaces in the home, such as matte or gloss paints. Tribology can evaluate the “feel” of these solid surfaces, with appropriate fixtures.  The measurements presented compare steel fixtures with surfaces modified to better mimic skin properties.  An optimum surface material will provide differentiation between samples and minimize variability between measurements.

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avatar for Sarah Cotts

Sarah Cotts

Applications Scientist, TA Instruments
BiographyBachelor's of Science degree from William and Mary in Polymer Chemistry. Prior to joining TA Instruments, she worked as an Applications Chemist for Sartomer developing UV-curable formulations for inks, adhesives, anti-corrosion and wood coatings. She now provides applications... Read More →



Friday February 21, 2020 9:00am - 9:30am
Rhythms II-III