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The synthesis of colloidal silica spheres grafted with long poly-(dimethyl siloxane) chains as described in literature has been successfully reproduced. The particles have been elaborately characterized, using different techniques and taking advantage of the availability of the unreacted bare particles and free polymer. Rheological measurements were performed on dispersions in heptane, all made from...
Experimental determination of the flow-induced structures of particles in suspension have been employed previously to provide a stringent test of models of non-Newtonian behaviour of flowing systems. To date, most work has employed light and neutron scattering on micron and sub-micron sized particles. Here we report on a novel experimental technique that provides structural data for 0.32 mm diameter...
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