Simple linear viscoelastic models of dilute solutions of polymer molecules and emulsions droplets.

J. Mellema, C. Blom, J.J. Beekwilder, J.P. Beekwilder

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Abstract

The complex viscosity of microemulsions shows relaxation processes of which the largest relaxation time is about 10−5 s or less. This time can be attributed to relaxation of stresses in the surface of emulsion droplets pertaining to interfacial tension. Superimposed on a spherical droplet surface shape fluctuations can occur due to thermal energies. Our aim is to show the influence of thermal shape fluctuations on the complex viscosity of emulsions. The method used in the derivation has also been applied to inflexible rods to demonstrate its feasibility by showing the formal rheological equivalence of in length thermally fluctuating rods and Rouse's simple model of polymers. The emulsion results have been applied to a dilution series of a non-ionic microemulsion.
Original languageUndefined
Pages (from-to)418-427
Number of pages10
JournalRheologica acta
Volume1987
Issue number26
DOIs
Publication statusPublished - 1987

Keywords

  • linear viscoelasticity
  • IR-85729
  • Emulsion
  • Relaxation time
  • Polymer
  • complex viscosity
  • METIS-129237

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