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- W1982194920 abstract "Effect of 4,5-dihydroxy-1,3-benzenedisulfonic acid disodium salt's addition upon Cu2O dispersion properties is studied to clarify dispersant's role in colloidal properties change and its underlying stabilization mechanism, and to quantify processing conditions for the oxide. Dispersing effectiveness was studied through adsorption, rheological and electrophoretic measurements, using as-received and surface charge modified Cu2O particles. Maximum solid loading attained without dispersant was 73 wt.% (31 vol.%), with corresponding viscosity of 152.5 ± 7.3 Pa s. Addition of dispersant resulted in viscosity between 21.0 Pa s and 5.4 Pa s. No isoelectric point was found for as-received particles’ suspensions nor for dispersed suspensions, with particles presenting negative surface charge in all studied pH range, from pH 4 to 10. Adsorption of the organic molecule caused an absolute downshift of 8–25 mV of the electrophoresis curve. Dispersant/Cu2O interaction was assessed through FTIR analysis. Attained results suggest that, at the natural suspensions pH, dispersant-modified Cu2O suspensions are stabilized through inner-sphere complexation mechanism, resulting in high dispersion ability." @default.
- W1982194920 created "2016-06-24" @default.
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- W1982194920 date "2009-07-01" @default.
- W1982194920 modified "2023-10-16" @default.
- W1982194920 title "Dispersion of Cu2O particles in aqueous suspensions containing 4,5-dihydroxy-1,3-benzenedisulfonic acid disodium salt" @default.
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- W1982194920 doi "https://doi.org/10.1016/j.ceramint.2008.10.023" @default.
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