1 January 1991 Measurement of interfacial tension by automated video techniques
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This report describes a simple automated system for measuring interfacial tension using the pendant or sessile drop method. The size and shape of a transparent or opaque drop of one fluid immersed in a second, transparent, fluid is recorded with a CCD video camera and digitized and stored by a computer-controlled system. Custom software determines various droplet shape factors and computes the interfacial tension. A limited number of video frames can be stored on disc, or longer runs can be stored on video tape for later digitization. Alternately, only the shape factor and interfacial tension data are stored to reduce demands on the storage medium. The first application of the system was measurement of the interfacial tension of crude oil interacting with various bacterial agents in aqueous suspension. Some of these agents can greatly influence the effective interfacial tension of the crude oil and potentially improve recovery rates from oil reserves, particularly of the "heavier" or more viscous oils.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Vance A. Deason, Vance A. Deason, Randall L. Miller, Randall L. Miller, Arthur D. Watkins, Arthur D. Watkins, Michael B. Ward, Michael B. Ward, Karen B. Barrett, Karen B. Barrett, "Measurement of interfacial tension by automated video techniques", Proc. SPIE 1332, Optical Testing and Metrology III: Recent Advances in Industrial Optical Inspection, (1 January 1991); doi: 10.1117/12.51139; https://doi.org/10.1117/12.51139

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