Figure 1. Normalized scattering intensities I ( q ) as a function of q ( angstrom - 1) for samples with varying amounts of polymer quantified by the dimensionless polymer concentration c sub p / c sub p *. The colloid volume fraction is fixed at phi equals 0.40 plus or minus 0.01, and R sub g / R = 0.053. Data is shown for: c sub p /c sub p* = 0 ( hard spheres, crosses ), 0.08 ( equilibrium fluid, squares ), and 0.1 ( Gel, triangles ). Experimental data ( diamonds ) for the form factor ( single particle scattering ) is also shown. As more polymer is added to the system, intensities at low angles increase indicating the presence of clusters/aggregates and an increased compressibility.

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