Abstract
We examine to prepare conductive carbon black (CB) dispersed systems in water with various particle concentration using humic acid sodium salt (sodium humate; HA-Na), and discuss their surface structures and viscoelasticity. The internal surface area of the CB should not be effective for viscoelasticities of the CB dispersed systems, because the average pore diameter of micropores is smaller than the average molecular diameter of HAs. These dispersed systems behave as typical elastic ones but are easy to deform. The dispersed system looks not to be fluid, but to be paste even at 1wt% of CB. It indicates that HA-Na supports the construction of 3D-network structure by CB particles and HA.
