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CaBER®

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The CaBER®, or Capillary Breakup Extensional Rheometer, is a low cost, easy to use instrument for quantifying the flow response of a polymer liquid and melt to an extensional deformation. This instrument can be used to quantify the viscosity, surface tension, relaxation time, and breakup time of filaments formed in an extensional flow. This instrument was developed under an SBIR grant from the NSF.

The CaBER® is now sold through ThermoHaake. Download the CaBER® brochure.

Selected CaBER® Journal Publications

  • Rodd, L.E.; Scott, T.P.; Cooper-White, J.J.; McKinley, G.H., "Capillary breakup rheometery of low viscosity elastic fluids," Appl. Rheol., 15(2005), 12-27.
  • McKinley, G.H. and A. Tripathi, "How to extract the Newtonian viscosity from capillary breakup measurements in a filament rheometer," Journal of Rheology, 2000. 44(3): p. 653-670.
  • Anna, S.L. and G.H. McKinley, "Elasto-capillary thinning and breakup of model elastic liquids," Journal of Rheology, 45: p. 115-138 (2001).
  • Braithwaite, G.J.C. and S.H. Spiegelberg. "Capillary Breakup to Determine the Extensional Properties of Polymeric Fluids," in American Chemical Society North Eastern Regional Meeting. 2001. Durham, NH.
  • Willenbacher, N, “Industrial applications of capillary breakup elongational rheometry (Haake CaBER™), Eur. Rheology Meeting, 2002. Erlangen.
  • Neal, G. and G. Braithwaite. "The use of Capillary Breakup Extensional Rheology to examine concentration dependence of relaxation time," in Society of Rheology Annual Meeting. 2003. Pittsburgh, PA.
  • Willenbacher, N, “Elongational viscosity of aqueous acrylic thickener solutions from capillary break-up elongation rheometry (CaBER)”, Rheofuture, 2004. Karlsruhe, Germany.
  • Plog, J.P., Kulicke, W.-M., Clasen, C. “Influence of the molar mass distribution on the elongational behaviour of polymer solutions in capillary breakup,” Appl. Rheology, vol 15, 28-37, (2005).
  • Kityk, A.V., Wagner, C. “Delay of disorder by diluted polymers,” Europhys. Lett., vol 75 (3), p. 441 (2006).

More information can be found in our application notes section.