Skip to main content
SpringerLink
Log in

Drop deformation during elongational flow in blends of viscoelastic fluids. Small deformation theory and comparison with experimental results

  • Original Contribution
  • Published:
Rheologica Acta Aims and scope Submit manuscript

Abstract

The deformation of dispersed droplets in immiscible polymer blends was studied in elongational flow, with an original method based on quenching specimens elongated in the melt. Results for high capillary numbers and different viscosity ratios were compared to the linear theory of viscoelastic emulsions of Palierne. Simple expressions for the drop deformation could be obtained for Maxwell fluids, and the influence of viscoelasticity of matrix and inclusions on the drop deformation process was discussed. With respect to the Newtonian approximation, the description of some experimental data could be improved. However, the predictions of the viscoelastic model appeared to be very sensitive to the choice of relaxation times.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  • Barthès-Biesel D, Acrivos A (1973) Deformation and burst of liquid droplet freely suspended in a linear shear field. J Fluid Mech 61:1

    Google Scholar 

  • Chaffey CE, Brenner H (1967) A second-order theory for shear deformation of drops. J Colloid Interf Sci 24:258–269

    Google Scholar 

  • Choi SJ, Schowalter WR (1975) Phys Fluids 18:420

    Google Scholar 

  • Cox RG (1969) The deformation of a drop in a general time-dependent fluid flow. J Fluid Mech 37:601–623

    Google Scholar 

  • Delaby I, Ernst B, Germain Y, Muller R (1994) Droplet deformation in polymer blends during uniaxial elongational flow: influence of viscosity ratio for large capillary numbers. J Rheol 38:705–1720

    Google Scholar 

  • Meijer HEH, Janssen JMH (1994) Mixing of immiscible liquids, Ch. 4. In: Manas Zloczowei I, Tadmor Z (eds) Mixing and compounding of polymers. Hanser, New York

    Google Scholar 

  • Palierne JF (1990) Linear rheology of viscoelastic emulsions with interfacial tension. Rheol Acta 29:204–214. (1991) Erratum 29:497

    Google Scholar 

  • Taylor GI (1932) The viscosity of a fluid containing small drops of another. Proc R Soc A 138:41–48

    Google Scholar 

  • Taylor GI (1934) The formation of emulsions in definable fields of flow. Proc R Soc A 146:501–523

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Institut Charles Sadron (CRM-EAHP), 4, rue Boussingault, 67000, Strasbourg, France

    Isabelle Delaby &  René Muller

  2. CERDATO ELF-ATOCHEM, 27270, Serquigny, France

    Benoit Ernst

Authors
  1. Isabelle Delaby
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. René Muller
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Benoit Ernst
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Delaby, I., Muller, R. & Ernst, B. Drop deformation during elongational flow in blends of viscoelastic fluids. Small deformation theory and comparison with experimental results. Rheola Acta 34, 525–533 (1995). https://doi.org/10.1007/BF00712313

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00712313

Key words

Search

Navigation