A consideration of the range and strength of interparticle forces in coated lactose powder

A study has been made of the range and strength of interparticle forces in lactose powder coated with increasing concentrations of paraffins at different temperatures. Marked changes occurred in these forces as the paraffin content was altered and the temperature increased from -10 degrees to +50 degrees C. The strength and range of interparticle forces depended on the mechanical properties of the coating materials and the surface free energy of the coated powders.