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 language | English (US) |
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Pages (from-to) | 367-379 |
Number of pages | 13 |
Journal | Journal of Rheology |
Volume | 28 |
Issue number | 4 |
DOIs | |
State | Published - Aug 1984 |
All Science Journal Classification (ASJC) codes
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering