Surface and interfacial tension measurement by drainage methods Journal Articles uri icon

  •  
  • Overview
  •  
  • Research
  •  
  • Identity
  •  
  • Additional Document Info
  •  
  • View All
  •  

abstract

  • AbstractThe drainage of a liquid from a narrow vertical tube which is open at the bottom but closed at the top is prevented when the capillary forces exceed the gravitational forces acting on the liquid meniscus. The critical tube diameter for prevention of drainage is a function of surface or interfacial tension, and this effect forms the basis of three techniques for measuring surface or interfacial tension. Results are given for various liquid/air and liquid/liquid systems in (a) a tapered tube, (b) a rotating uniform tube and (c) a tilted uniform tube. Methods (a) and (b) appear capable of measuring surface or interfacial tension within about ± 1%.

publication date

  • June 1981