Levich Institute Seminar Announcement, 04/12/2011
Tuesday, 04/12/2011
2:00 PM
Steinman Hall, Room #312
(Chemical Engineering Conference Room)

Dr. Andrei Potanin
Colgate-Palmolive Company

"Thixotropic Fluids in Industry: Measurements and Calculations"


Toothpastes, shower gels and deodorants are among many thixotropic fluids developed at Colgate. In this presentation I will discuss rheological characterization of such fluids and subsequent utilization of the obtained data to model industrial processes: mixing, filling and deposition. One example, to be considered in greater details, deals with the flow of toothpastes in various rheometers and industrial mixers. Other examples deal with loading of striped toothpastes into tubes, filling shower gels into bottles and deposition of deodorants from roll-on packaging. In all these examples rheological data are parameterized so as to be used in computational fluid dynamics (CFD) to quantitatively predict and optimize the processes. Thixotropy, while widely studied in academic research, is still often ignored in industrial CFD which may lead to errors.


  • 2005-present: Colgate Palmolive Co., Technology Manager.
  • 1999-2005: Imation Corp., Research Scientist.
  • 1997-1999: Quantegy Inc., Rheologist.
  • 1995-1997 University of Alabama, Research Associate.
  • 1994-1995 Princeton University, Research Fellow.
  • 1992-1994 University of Twente, Visiting Researcher.
  • 1985-1991 Inst. Phys. Chem, USSR Acad.Sci., Senior Scientist.

  • Rheology
  • Computational fluid dynamics
  • Molecular modeling of surfactants and polymers
  • Micro-rheology and particle tracking