Table 3.
Samplea | Bingham | Herschel–Bulkley | Power Law | T (°C)b | Viscosity (mPa.s) at 50 s−1 | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
σ0 (Pa) | η (mPa.s) | R2 | σ0, Pa | k | η (mPa.s) | R2 | k | n | R2 | |||
5× TSC (6.6) | 1.183 | 75.59 | 0.973 | 0.941 | 0.203 | 0.774 | 0.999 | 0.965 | 0.434 | 0.949 | 53.1 | 46.4 |
5× DSP (6.5) | 0.962 | 54.86 | 0.978 | 0.782 | 0.143 | 0.781 | 0.999 | 0.766 | 0.419 | 0.941 | 55.5 | 35.2 |
5× DSP (6.6) | 0.991 | 51.18 | 0.977 | 0.838 | 0.119 | 0.809 | 0.998 | 0.785 | 0.402 | 0.937 | 50.6 | 46.1 |
5× DSP (6.7) | 0.802 | 64.20 | 0.966 | 0.580 | 0.202 | 0.735 | 0.999 | 0.679 | 0.470 | 0.962 | 53.1 | 42.6 |
aValues in parentheses shows the pH at which samples exhibited maximum heat stability
bT—Temperature corresponding to minimum viscosity