The concentration of surfactants is well above the critical micelle concentration in water. Does the adsorption of surfactant ions on the surface of the coal particles contribute in forming stable slurry systems? Does the adsorption has any role is dictating rheology or only the portion of surfactant present in the solution (not adsorbed) govern the viscoelastic behavior?
Adsorption and viscosity of the solutions play a role in stabilizing the suspensions and coal. In disperse systems, aggregative stability is distinguished, which depends on stabilization and kinetic stability, which depends on the viscosity of the medium. You have chosen a system that has a surfactant and increased viscosity. Apparently you know about it. For a suspension of coal, I would single out the specificity that we used to reduce viscosity. Coal, like all graphite materials, has polybenzene planes between which functional groups, for example, sulfonic acids, can penetrate. We used waste from coke chemistry to reduce the viscosity of the suspension of coal. Such a suspension can be pumped through pipelines.
Patent WATER-COAL SUSPENSION PRODUCTION METHOD
Worm-like micelles (Giant micelles) are formed with ctab together salycilate. This is the reason for the viscoelasticity behavior.
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