Study the influence of poly vinyl acetate on flow behavior of bentonite dispersions in water

Abstract EN

The present investigation is concerned to study the influence of poly vinyl acetate (PVAc.) on flow behavior of bentonite dispersions in water, poly vinyl acetate was added to the bentonite dispersion in different concentration (5, 7.5, 10, 12.5, 15, 17.5 and 20) gm / l.

after that, the flow properties of these samples was measured and that included (viscosity, shear stress, shear rate and Bingham yield value), The results show thixotropy flow by a hysteresis loop of the flow curves for bentonite dispersion with and without poly vinyl acetate, but with (PVAc.) give higher fluidity flow.

Also the morphology of bentonite dispersions was analyzed before and after adding poly vinyl acetate by scanning electron micrograph (SEM), it is show that a weak association between (PVAc.) and bentonite dispersions.