Results 171 to 180 of about 5,188 (197)
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Microfluidic approach for rapid multicomponent interfacial tensiometry
Lab on a Chip, 2006We report a microfluidic instrument to rapidly measure the interfacial tension of multi-component immiscible liquids. The measurement principle rests upon the deformation and retraction dynamics of drops under extensional flow and was implemented for the first time in microfluidics (S. D. Hudson et al., Appl. Phys.
João T, Cabral, Steven D, Hudson
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The maximum bubble pressure tensiometry
1998Publisher Summary This chapter focuses on the maximum bubble pressure method (MBPM) and deals with the physico-chemical and hydrodynamic processes taking place at various stages of the growth of a bubble and its separation from a capillary. Particular emphasis is made on theoretical problems like surface tension calculation from the measured excess ...
Fainerman, V., Miller, R.
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A rigorous theory of ring tensiometry
Colloid and Polymer Science, 1975TheHarkins-Jordan correction factors which make the ring method an accurate and absolute method of measuring surface and interfacial tensions, are calcuated theoretically and made available in a tabulated form. The applicable range of the numerical tabulation far exceeds the range of those available in the literature which have been obtained ...
C. Huh, S. G. Mason
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New Development in Processing Pendant Droplet Tensiometry Data
Langmuir, 2008A database linking the dimensionless volume of pendant droplets Vpen and the dimensionless volume of the spherical caps at the apex of the droplets Vcap has been constructed from the governing equations of pendant droplet tensiometry. The Bond number Bo that relates surface tension to gravitational body force appears as an independent parameter in this
Y Leong, Yeow +3 more
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Sphere tensiometry: an evaluation and critique
Canadian Journal of Chemistry, 1976An absolute gravimetric method of measuring surface and interfacial tensions of liquids by pulling a sphere through the interface is examined. The method also permits simultaneous measurement of the contact angle of the liquid on the sphere surface; this enables corrections to be made for incomplete wetting of the solid by liquids in measuring the ...
C. Huh, S. G. Mason
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Tensiometry and rheology of complex interfaces
Current Opinion in Colloid & Interface Science, 2018Abstract Complex fluid-fluid interfaces play an important role in a variety of application domains, from emulsion and foam stability, to thin films in biomedical applications, to coating flow phenomena. The current work reviews progress made in particular for interfaces where rheological stresses, peculiar to the interface, play an important role ...
Nick Jaensson, Jan Vermant
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1998
Publisher Summary The spinning drop technique (SDT) has been developed to measure extremely low interfacial tensions (from 10 -6 mNm -1 to 10 mNm -1 ). It uses profile analysis of deformed droplets similar to the pendent drop method. Unlike in pendent drop experiments, where the droplets are deformed by the gravitational force, SDT is based on ...
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Publisher Summary The spinning drop technique (SDT) has been developed to measure extremely low interfacial tensions (from 10 -6 mNm -1 to 10 mNm -1 ). It uses profile analysis of deformed droplets similar to the pendent drop method. Unlike in pendent drop experiments, where the droplets are deformed by the gravitational force, SDT is based on ...
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Sputum-Tensiometrie — ein praktikables Verfahren?
Klinische Wochenschrift, 1968Die Bestimmung der Oberflachenspannung des Sputums mit der Ringmethode nachLecomte du Nouy ist nicht praktikabel, weil diese Substanz nicht die erforderliche Voraussetzung einer planen Oberflache erfullt. Es ist ferner zweifelhaft, ob Messungen mit geeigneteren Verfahren nicht in der Mehrzahl der Falle die Oberflachenspannung des dem Sputum ...
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Capillary pressure tensiometry and applications in microgravity
1998Publisher Summary The CPT has consequently been employed with several configurations and with different methodologies to measure the interfacial tension of pure liquids and for studying the dynamics of adsorption on different time scales both on earth and in microgravity.
L Liggieri, F Ravera
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Some Aspects of Spinning Drop Tensiometry
Journal of Colloid and Interface Science, 1995Abstract The spinning drop technique is used routinely for measuring surface and interfacial tensions of and between fluids. This report aims to investigate the cause of—and to provide solutions to—some commonly encountered problems that have to do with the difficulty of releasing the drop from the tube wall.
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