V. Penkavova, M. Guerreiro, J. Tihon, J.A.C. Teixeira
Deflocculation of kaolin suspensions - The effect of various electrolytes
Appl. Rheol. 25:2 (2015) 24151 (9 pages)Abstract: Viscosity reduction of aqueous kaolin suspensions by conventional additives (deflocculation) is studied, using standard viscosity measurements. Apparent viscosity at 100 s-1, and flow behavior index n give complex information about changes of viscosity and flow character of deflocculated suspensions. Several widely used deflocculants - electrolytes and polyelectrolytes - are tested in a wide range of concentrations. The optimum concentrations of these deflocculants, which result in minimum apparent viscosity of suspension, are found. Sedimentation stability of deflocculated suspensions is monitored. Inorganic electrolytes are found to be more effective in viscosity reduction. On the other hand, low-molecular-weight polyelectrolytes produce more stable final suspensions. © 2015 Applied Rheology.
DOI 10.3933/ApplRheol-25-24151
-- full text PDF
available for subscribers --
-- open access PDF extractavailable for non-subscribers --
You have no password-free access to Applied Rheology Online. If you are a subscriber, enter login details below. For password-free access, we need your IP address. Sample manuscripts for free download can be found here ►
Forgotten your login details? Send an email with subject "AR login" to login@appliedrheology.org
Purchase this article for 20 € ? ►
Appl Rheol 25 (2015) issues:
© Applied Rheology 2018