  We study the scaling of adsorption isotherms of polyacrylic dispersants on
generic surfaces of metallic oxides $XnOm$ as a function of the number of
monomeric units, using Electrostatic Dissipative Particle Dynamics simulations.
The simulations show how the scaling properties in these systems emerge and how
the isotherms rescale to a universal curve, reproducing reported experimental
results. The critical exponent for these systems is also obtained, in perfect
agreement with the scaling theory of deGennes. Some important applications are
mentioned.
