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Technical Paper -
Rheological properties and zeta potential are investigated for 1 % Laponite RD aqueous dispersions with different contents of poly(ethylene glycol). At low concentrations of polymer (< 1 %), the clay dispersions are stable, whereas an unstable liquid phase appears above 2 % polymer. The samples present a Newtonian behavior, showing more viscous than elastic response. The viscoelastic moduli are...