Influence of the physicochemical properties of carbon black of different grades on moisture absorption

Abstract

The adsorption of water vapor on carbon black grades N115, N220, N326 and N550 was investigated at a relative humidity of 10 to 90% by a desiccator method. The necessary moisture in the desiccator was created with a solution of sulfuric acid of a certain concentration. The physicochemical properties of carbon black are investigated: specific surface area, pore volume, average pore size, elemental composition, structure and content of oxygen-containing functional groups on the surface. The influence of the physicochemical properties of carbon black of various grades on their moisture absorption is established.