Etude de l'effet d'un polymère anionique sur le comportement rhéologique de suspensions de bentonite

Adel Benchabane (1) , Karim Bekkour (1)

1 IMFS - Institut de Mécanique des Fluides et des Solides

In this study, we explain by granulometric measurements, the addition of an anionic polymer effect (Carboxy Methyl Cellulose of sodium: CMC) on the rheological behavior of the bentonite suspensions. It was shown that for destructurated suspensions and independently of the CMC molecular mass, this last causes an increase of the number of small particles. The mechanical history is responsible for the destruction of the suspensions, the CMC being used only to coat the particles and to prevent their agglomeration; in this case, the mechanism of destructuration - reorganization depends on the polymer.

Mots clés: Bentonite; CarboxyMethyl Cellulose de Sodium; polymère anionique; Rhéologie; Granulométrie

Domaines: Mécanique des matériaux [physics.class-ph]; Mécanique des matériaux [physics.class-ph]

Adel Benchabane, Karim Bekkour. Etude de l'effet d'un polymère anionique sur le comportement rhéologique de suspensions de bentonite. 39ème Colloque annuel du Groupe Français de Rhéologie, Oct 2004, Mulhouse, France. pp.201-205. ⟨hal-00304350⟩