Rheology of Self-Associating Concentrated Xanthan Solutions

Timothy Lim, Jonathan T. Uhl, Robert K. Prud'Homme

Research output: Contribution to journalArticlepeer-review

64 Scopus citations

Abstract

The rheology of xanthan solutions is strongly influenced by molecular association and aggregation. The relationship between theological behavior and molecular association has been studied using dynamic oscillatory measurements, step-shear-rate measurements, and optical birefringence. For solutions with concentrations of 0.5% wt or below, weak association—possibly through hydrogen bonding—leads to nonlinear behavior in dynamic oscillatory measurements at high strain. For concentrations of 1% and above, liquid crystalline domains are formed and the time required to approach a steady viscosity value at low shear rates is quite long.

Original languageEnglish (US)
Pages (from-to)367-379
Number of pages13
JournalJournal of Rheology
Volume28
Issue number4
DOIs
StatePublished - Aug 1984

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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