Continuation of 222A. Interparticle interactions, coagulation, DLVO theory, steric interactions, polymer-coated surfaces, polymers in solution, thin film viscosity. Surfactant and lipid self-assembly: micelles,microemulsions. Surfaces: wetting, contact angles, surface tension. Surfactants on surfaces: langmuir-blodgett films, adsorption, adhesion. Non-equilibrium and dynamic interactions.