Abstract
Permanent red 24 (1-(2,4-Dinitro-phenylazo)-naphthalen-2-ol) is a family member of azo dyes. Azo dyes have so many industrial applications. In this study, permanent red 24 nano pigments were prepared by microemulsion as a novel method. The effects of different experimental parameters for nano pigment preparation were studied. The investigated parameter include surfactant nature, solvent, surfactant, cosurfactant, and pigment percentage in microemulsion formulation. Optimal formulation determined for nano pigment preparation. Performing the process under the optimal formulation leads to the production of nano pigment with an average size of about 85 nm. The nano pigment was characterized by Transmission Electron Microscopy (TEM) and Dynamic Light Scattering (DLS). The DLS measurements confirm TEM analysis.
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