Interaction of cationic red X-GRL with polymer emulsion

The conductivity and surface tension of the mixed liquid resulting from the interaction of cationic dye with polymer emulsion were measured using conductivity and surface tension measurements and compared with those of pure dye liquor or pure polymer emulsion.The results showed that the addition of cationic dye X-GRL whose concentration lower than its aggregation one to the polymer emulsion increased the conductivity of the mixed emulsion,and adding polymer emulsion to X-GRL liquor whose concentration higher than its aggregation one also increased the conductivity of the mixed solution.If the dye liquor whose concentration far higher than its aggregation one was added into the polymer emulsion,the conductivity of the mixed liquid displayed lower than that of dye liquor.This indicates the adsorption of X-GRL on the surface of polymer latex reduced the conductivity of latex.And the surface tension of the mixture was lower than those of the dye liquor and polymer emulsion,this may be attributed to the formation of a complex of dye ion and surfactant in the emulsion at the air / liquid interface.