Evidence for Chemical Interaction in Carbon and Polymer Associations. Butyl and Acidic Oxy Blacks. The Possible Role of Carboxylic Acid Groups on the Black

Abstract

Assuming that the enhanced reinforcement capacity of oxidized black in butyl is related specifically to acidity provided by carboxyl groups on the surface of the black, the black was neutralized by esterification and saponification, respectively. The reduced carbon-polymer bonding activity resulting from these neutralizations is discussed in the light of the cationic interaction mechanism which it is proposed is involved.