Abstract
The control of the theological properties of clay-water systems is important not only from a technological point of view, but also from a scientific one. The effect of a non-ionic polymer, polyethylene glycol, on the rheological properties of a Na-activated bentonite dispersion for two different molecular weight polymers PEG3000 and PEG8000 was analysed. PEG was added to the bentonite dispersion in concentrations ranging between 10-6 and 10-2 mole/L. The rheological behavior of bentonite dispersions was obtained by shear stress-shear rate measurements using shear rate ranging between 0 and 350 s-1. The results were explained considering the molecular weight, concentration of polymer, and particle interactions. The results are explained in terms of flocculation and the partial reversibility of the flocculated structure.
| Original language | English |
|---|---|
| Pages (from-to) | 831-835 |
| Number of pages | 5 |
| Journal | Revue Roumaine de Chimie |
| Volume | 50 |
| Issue number | 9-10 |
| Publication status | Published - Sept 2005 |