Three-Dimensional Characterization of Active Surfactant

  • Victor P. Janule


Active surfactant are known to have dynamic characteristics when surface tension is determined as a function of interface development time. Higher surface tensions result as interface development times are reduced. This allows the characterization of a fluid in two dimensions, surface tension versus interface development time, which includes both the static (or equilibrium) and dynamic zones. When a fluid’s surface tension is further measured as a function of surfactant concentration, then the action of the surfactant can be characterized in three dimensions: concentration, surface tension, and interface development time. The method presented can be applied readily to active surfactant added to coatings, aqueous solutions, fountain solutions/ink emulsions, and other chemicals or formulations for which surface tension can be measured using the modified maximum bubble pressure method. In the example presented, the SensaDyne® Tensiometer was used with several auxiliary software programs, one for accurate determination of interface development times, and a second program for three-dimensional graphing of the data.


Surface Tension High Surface Tension Dynamic Surface Tension ASCII Format Active Surfactant 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer Science+Business Media New York 1995

Authors and Affiliations

  • Victor P. Janule
    • 1
  1. 1.SensaDyne Instrument DivisionChem-Dyne Research CorporationMesaUSA

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