Organic Pigments and Carbon-Based Materials

Initially developed for carbon black [75], this technique was also successfully applied for other organic pigments (see Fig. 12) [74]. Surface functionalization for the adhesion process to different substrates was either obtained by physically adsorbed surfactants, as the anionic SDS, the cationic cetyltrimethylammonium chloride (CTMA-Cl), or the non-ionic Lutensol AT50, or by copolymerizing styrene or acrylates with functional comonomers. 

It is interesting to mention that the presence of the pigments can significantly change the polymerization kinetics. Retardation of the reaction rate of styrene polymerized on the surface of azo-pigment particles can be attributed, e.g., to the interaction of radical species with nitrobenzene fragments. In the case of quinacridone pigments, a remarkable inhibition period was observed. 

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