Oscillatory deep channel interfacial rheometer
Journal Article
·
· Review of Scientific Instruments; (United States)
- Department of Chemical Engineering, Illinois Institute of Technology, Chicago, Illinois 60616 (United States)
An interfacial rheometer to measure the dynamic response of a liquid--liquid interface subjected to a small amplitude oscillatory shear stress is described. Experiments are conducted in a deep channel rheometer fitted with an oscillatory floor. This instrument is used to examine the rheological behavior of interfaces in the presence of surfactants. Rheological parameters are calculated from a hydrodynamic analysis incorporating interfacial rheological models. It is demonstrated here that an adsorbed layer of macromolecular surfactants at an oil--water interface is viscoelastic even though the adjacent phases are Newtonian.
- OSTI ID:
- 7164563
- Journal Information:
- Review of Scientific Instruments; (United States), Journal Name: Review of Scientific Instruments; (United States) Vol. 65:8; ISSN 0034-6748; ISSN RSINAK
- Country of Publication:
- United States
- Language:
- English
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